Introduction to Spectral Efficiency (光谱效率)

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Narrow sentence examples with built-in keyword filters

non orthogonal multiple orthogonal frequency division bit error rate multiple input multiple massive multiple input closed form expression wireless communication system high data rate cell free massive orbital angular momentum Explore More

Spectral Efficiency sentence examples within non orthogonal multiple

non orthogonal multiple 10.1109/TWC.2020.3045025

非正交倍数

Non-orthogonal multiple access (NOMA) is regarded as a promising technology to provide high spectral efficiency and support massive connectivity in 5G systems.

非正交多址接入 (NOMA) 被认为是一种很有前途的技术，可提供高频谱效率并支持 5G 系统中的大规模连接。

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non orthogonal multiple 10.1109/TVT.2021.3078002

非正交倍数

Non-orthogonal multiple access (NOMA) is increasingly becoming very attractive in cloud radio access networks (CRANs) to further boost the overall spectral efficiency, connectivity and, capacity of such networks.

非正交多址接入 (NOMA) 在云无线接入网络 (CRAN) 中变得越来越有吸引力，以进一步提高此类网络的整体频谱效率、连接性和容量。

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Spectral Efficiency sentence examples within orthogonal frequency division

orthogonal frequency division 10.1109/LCOMM.2020.3041827

正交频分

We depict a practical scheme for using ICM with orthogonal frequency division multiplexing (OFDM) and show that OFDM with ICM (OFDM-ICM) can enhance the spectral efficiency (SE) and error performance of OFDM-IM.

我们描述了一个使用具有正交频分复用 (OFDM) 的 ICM 的实用方案，并表明具有 ICM 的 OFDM (OFDM-ICM) 可以提高 OFDM-IM 的频谱效率 (SE) 和误码性能。

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orthogonal frequency division 10.1109/TCOMM.2021.3060036

正交频分

In this article, we analyze the uplink spectral efficiency of a multiuser massive MIMO system with low-resolution ADCs in the context of orthogonal frequency division multiplexing (OFDM) under multipath channels.

在本文中，我们分析了多路径信道下正交频分复用 (OFDM) 环境下具有低分辨率 ADC 的多用户大规模 MIMO 系统的上行链路频谱效率。

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Spectral Efficiency sentence examples within bit error rate

bit error rate 10.1016/j.dsp.2020.102919

误码率

The experimental results depicts that the proposed SCMA codebook approach achieves low Bit Error Rate (BER) and High Spectral Efficiency (SE) performance comparing with existing known designs in Rayleigh channels.

实验结果表明，与瑞利信道中现有的已知设计相比，所提出的 SCMA 码本方法实现了低误码率 (BER) 和高频谱效率 (SE) 性能。

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bit error rate 10.1109/jsyst.2020.2991678

误码率

Therefore, a new comparative study in terms of spectral efficiency and bit error rate for 1-D, 2-D, and 3-D asynchronous and synchronous OCDMA systems is carried out.

因此，针对 1-D、2-D 和 3-D 异步和同步 OCDMA 系统的频谱效率和误码率进行了新的比较研究。

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High Spectral Efficiency Higher Spectral Efficiency Improve Spectral Efficiency Sum Spectral Efficiency Increase Spectral Efficiency Achievable Spectral Efficiency Area Spectral Efficiency System Spectral Efficiency Enhance Spectral Efficiency Better Spectral Efficiency Explore More

Spectral Efficiency sentence examples within multiple input multiple

multiple input multiple 10.1109/JSYST.2020.3011987

多输入多

In this article, two new multiple-input multiple-output (MIMO) system designs using RISs are presented to enhance the performance and boost the spectral efficiency of state-of-the-art MIMO communication systems.

在本文中，介绍了两种使用 RIS 的新多输入多输出 (MIMO) 系统设计，以提高最先进的 MIMO 通信系统的性能和频谱效率。

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multiple input multiple 10.21203/rs.3.rs-891880/v1

多输入多

Massive MIMO (multiple input multiple output) systems are best suitable for mmWave communications improving throughput and spectral efficiency in 5G.

大规模 MIMO（多输入多输出）系统最适合用于提高 5G 吞吐量和频谱效率的毫米波通信。

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Spectral Efficiency sentence examples within massive multiple input

massive multiple input 10.1109/VTC2021-Spring51267.2021.9448801

海量多输入

Massive multiple-input multiple-output (MIMO) in combination with orthogonal frequency division multiplexing (OFDM) is being explored as a key technology to boost spectral efficiency in next generation cellular systems.

大规模多输入多输出 (MIMO) 与正交频分复用 (OFDM) 相结合正在被探索为提高下一代蜂窝系统频谱效率的关键技术。

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massive multiple input 10.1109/MWSCAS47672.2021.9531881

海量多输入

In this paper, a method of power control is proposed in massive multiple-input multiple-output systems on the downlink transmission in order to maximize the spectral efficiency, where a base station with a large number of antennas serves the users equipped with a single antenna.

在本文中，为了最大化频谱效率，本文提出了一种在下行链路传输的大规模多输入多输出系统中的功率控制方法，其中具有大量天线的基站为配备单天线的用户提供服务.

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Spectral Efficiency sentence examples within closed form expression

closed form expression 10.1109/LWC.2021.3077900

封闭式表达

With the distributed conjugate beamforming receiver and the generalized additive quantization noise model, we derive a closed-form expression for the achievable downlink sum spectral efficiency (SE), which provides us a vigorous tool for easily evaluating the impacts of key parameters.

通过分布式共轭波束成形接收机和广义加性量化噪声模型，我们推导出了可实现的下行链路和频谱效率（SE）的封闭式表达式，这为我们轻松评估关键参数的影响提供了有力的工具。

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closed form expression 10.1109/VTC2021-Spring51267.2021.9448665

封闭式表达

In particular, a closed-form expression is derived for the INI power in the uplink with a flexible frame structure and a new resource allocation problem is formulated to maximize the network spectral efficiency (SE) by jointly optimizing the power allocation and numerology selection in a multi-user uplink scenario.

特别地，针对具有灵活帧结构的上行链路中的 INI 功率推导了一个封闭形式的表达式，并制定了一个新的资源分配问题，以通过联合优化功率分配和命理选择来最大化网络频谱效率（SE）。多用户上行场景。

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Spectral Efficiency sentence examples within wireless communication system

wireless communication system 10.3390/mi12080873

无线通信系统

In contemporary wireless communication systems, the multiple-input and multiple-output systems are extensively utilized due to their enhanced spectral efficiency and diversity.

在当代无线通信系统中，多输入多输出系统由于其增强的频谱效率和多样性而被广泛使用。

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wireless communication system 10.3390/electronics10131567

无线通信系统

Spectral efficiency is a major concern for future 6G wireless communication systems.

频谱效率是未来 6G 无线通信系统的主要关注点。

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Spectral Efficiency sentence examples within high data rate

high data rate 10.1145/3477081.3481678

高数据速率

Millimeter-wave beamforming owning rich spectrum and high spectral efficiency is regarded as a key technology to fulfill the ultra-high data rate for 5G and beyond wireless communications.

具有丰富频谱和高频谱效率的毫米波波束形成被视为实现5G及以后无线通信的超高数据速率的关键技术。

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high data rate 10.1109/SIU53274.2021.9477931

高数据速率

In this study, the use of the faster than nyquist (FTN) transmision method, which has spectral efficiency in the terahertz communication band and is proposed to provide transmission at high data rates, together with the harmonic receiver is investigated.

在这项研究中，研究了使用比奈奎斯特 (FTN) 传输方法更快的传输方法，该方法在太赫兹通信频带中具有频谱效率，并建议与谐波接收器一起提供高数据速率的传输。

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Spectral Efficiency sentence examples within cell free massive

cell free massive 10.1109/lcomm.2021.3105918

无细胞大块

Network-assisted full-duplex enable simultaneous uplink (UL) and downlink (DL) communications by allocating remote antenna units (RAUs) to perform either UL reception of DL transmission at each time slot, which improve the spectral efficiency (SE) of cell-free massive multiple-input multiple-output (MIMO) systems.

网络辅助全双工通过分配远程天线单元 (RAU) 在每个时隙执行下行链路传输的任一 UL 接收，从而实现同时上行链路 (UL) 和下行链路 (DL) 通信，这提高了小区的频谱效率 (SE)免费的大规模多输入多输出 (MIMO) 系统。

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cell free massive 10.1109/ICUFN49451.2021.9528826

无细胞大块

Cell-free massive multiple-input multiple-output (MIMO) systems are envisioned to achieve the improved spectral efficiency by supporting users via nearby access points (APs).

设想无蜂窝大规模多输入多输出 (MIMO) 系统通过附近的接入点 (AP) 支持用户来提高频谱效率。

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Spectral Efficiency sentence examples within orbital angular momentum

orbital angular momentum 10.1109/OJAP.2021.3051474

轨道角动量

Electromagnetic waves carrying orbital angular momentum (OAM) can improve the spectral efficiency of communication systems by multiplexing a number of OAM modes.

携带轨道角动量 (OAM) 的电磁波可以通过复用多个 OAM 模式来提高通信系统的频谱效率。

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orbital angular momentum 10.1109/SSD52085.2021.9429400

轨道角动量

Orbital angular momentum modes have shown promising achievements, as data carriers, in ameliorating the transmission capacity and raising the spectral efficiency.

轨道角动量模式作为数据载体在改善传输容量和提高频谱效率方面已显示出可喜的成就。

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Spectral Efficiency sentence examples within visible light communication

visible light communication 10.1109/ICOEI51242.2021.9452999

可见光通讯

Multi-cell cognitive visible light communication is suggested to enhance spectral efficiency.

建议使用多细胞认知可见光通信来提高光谱效率。

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visible light communication 10.3390/PHOTONICS8070257

可见光通讯

In this paper, a hybrid adaptive bias optical OFDM (HABO-OFDM) scheme for visible light communication (VLC) is proposed to improve spectral efficiency and power efficiency.

在本文中，提出了一种用于可见光通信（VLC）的混合自适应偏置光OFDM（HABO-OFDM）方案，以提高频谱效率和功率效率。

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Spectral Efficiency sentence examples within average power ratio

average power ratio 10.1109/ICC42927.2021.9500321

平均功率比

It is shown that the proposed design can achieve better performance both in spectral efficiency and in peak-to-average power ratio than the conventional DFT-spread OFDM of π/2-BPSK symbols with FDSS.

结果表明，与具有 FDSS 的 π/2-BPSK 符号的传统 DFT 扩展 OFDM 相比，所提出的设计可以在频谱效率和峰均功率比方面实现更好的性能。

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average power ratio 10.1364/OE.421108

平均功率比

AC-OFDM has nearly the same spectral efficiency and peak-to-average power ratio (PAPR) as traditional asymmetrically clipped optical OFDM (ACO-OFDM) but is less complex to implement.

AC-OFDM 具有与传统非对称削波光 OFDM (ACO-OFDM) 几乎相同的频谱效率和峰均功率比 (PAPR)，但实现起来不太复杂。

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Spectral Efficiency sentence examples within channel state information

channel state information 10.1109/jsyst.2021.3092430

通道状态信息

The spectral efficiency performance can approximate the optimal joint transceiver design performance without real-time channel state information.

频谱效率性能可以在没有实时信道状态信息的情况下逼近最佳联合收发器设计性能。

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channel state information 10.1109/ACCESS.2021.3115888

通道状态信息

Hence, before pre-processing the signal, the quality is assessed according to the channel state information, signal to inference plus noise ratio, received signal strength indicator and spectral efficiency.

因此，在对信号进行预处理之前，根据信道状态信息、信推噪声比、接收信号强度指标和频谱效率来评估质量。

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Spectral Efficiency sentence examples within inter symbol interference

inter symbol interference 10.1109/ICCWorkshops50388.2021.9473605

符号间干扰

However, it suffers from a loss of spectral efficiency as it requires a cyclic prefix (CP) to mitigate inter-symbol interference (ISI) and pilots to estimate the channel.

然而，它会损失频谱效率，因为它需要循环前缀 (CP) 来减轻符号间干扰 (ISI) 和导频来估计信道。

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inter symbol interference 10.1109/ICCE48956.2021.9352129

符号间干扰

Using the numerical simulation results, we can determine the guard length not only to prevent the inter symbol interference (ISI), but also to minimize the power consumption and increase the spectral efficiency of UWA-OFDM systems for a given transmission scenario.

使用数值模拟结果，我们可以确定保护长度不仅可以防止符号间干扰（ISI），而且可以最小化功耗并提高给定传输场景下 UWA-OFDM 系统的频谱效率。

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Spectral Efficiency sentence examples within mean square error

mean square error 10.1109/tcomm.2021.3094509

均方误差

We aim to maximize the spectral efficiency of the users by minimizing the sum mean square error (MSE) of the users’ received symbols.

我们的目标是通过最小化用户接收符号的和均方误差 (MSE) 来最大化用户的频谱效率。

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mean square error 10.17762/TURCOMAT.V12I3.965

均方误差

The performance throughput of proposed CSISR technique is measured against conventional algorithms considering power consumption, Normalized Mean Square Error (NMSE) and spectral efficiency of the mm-Wave MIMO system.

所提出的 CSISR 技术的性能吞吐量是针对考虑功耗、归一化均方误差 (NMSE) 和毫米波 MIMO 系统的频谱效率的传统算法进行测量的。

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Spectral Efficiency sentence examples within frequency division multiplexing

frequency division multiplexing 10.1109/VTC2021-Spring51267.2021.9448721

频分复用

Generalized frequency division multiplexing (GFDM) is a novel multi-carrier technique that provides the flexibility required by various emerging applications, thanks to the low out-of-band emissions due to better prototype filters and lower loss in spectral efficiency due to combined cyclic prefix for a group of sub-symbols.

广义频分复用 (GFDM) 是一种新颖的多载波技术，可提供各种新兴应用所需的灵活性，这要归功于更好的原型滤波器带来的低带外发射和组合循环前缀带来的更低频谱效率损失对于一组子符号。

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frequency division multiplexing 10.46501/IJMTST0702004

频分复用

In OFDM multiple carriers are used and it provides higher level of spectral efficiency as compared to Frequency Division Multiplexing (FDM).

在 OFDM 多载波中与频分复用相比，它提供了更高水平的频谱效率（FDM）。

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Spectral Efficiency sentence examples within multiple input–multiple output

multiple input–multiple output 10.1109/JIOT.2021.3073197

多输入-多输出

Massive multiple-input–multiple-output (MIMO) systems which include a large number of service antennas have received a great deal of attention as a means to improve both spectral efficiency (SE) and energy efficiency (EE) of wireless communication systems.

包含大量服务天线的大规模多输入多输出 (MIMO) 系统作为提高无线通信系统频谱效率 (SE) 和能量效率 (EE) 的手段而受到广泛关注。

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multiple input–multiple output 10.1007/s11277-021-08543-8

多输入-多输出

The massive multiple-input–multiple-output that enhances energy efficiency and spectral efficiency is the primary technology for fifth generation wireless networks.

提高能源效率和频谱效率的大规模多输入多输出是第五代无线网络的主要技术。

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Spectral Efficiency sentence examples within differential chaos shift

differential chaos shift 10.1109/access.2021.3108808

微分混沌位移

In this paper, a new high spectral efficiency differential-chaos-shift-keying system based on the time-delay overlapping modulation technology (TDOP-DCSK) is proposed.

本文提出了一种基于时延重叠调制技术（TDOP-DCSK）的新型高频谱效率差分混沌键控系统。

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differential chaos shift 10.1016/J.PHYCOM.2021.101342

微分混沌位移

Among non-coherent chaos-based communication schemes, improved-differential chaos-shift keying (I-DCSK) with the use of time-reversed chaotic sequences shows good achievement in bit-error-rate (BER) performance and spectral efficiency.

在基于非相干混沌的通信方案中，使用时间反转混沌序列的改进差分混沌键控（I-DCSK）在误码率（BER）性能和频谱效率方面表现出良好的成就。

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Spectral Efficiency sentence examples within mean squared error

mean squared error 10.1109/TWC.2020.3028161

均方误差

The performance metrics of the extrapolated channels that we evaluate include the mean squared error, beamforming efficiency, and spectral efficiency in multiuser MIMO scenarios.

我们评估的外推信道的性能指标包括多用户 MIMO 场景中的均方误差、波束形成效率和频谱效率。

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mean squared error 10.1109/tcomm.2021.3107582

均方误差

Compared to the benchmark channel estimation techniques, the proposed algorithms also achieve smaller mean squared error and higher achievable spectral efficiency.

与基准信道估计技术相比，所提出的算法还实现了更小的均方误差和更高的可实现频谱效率。

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Spectral Efficiency sentence examples within novel closed form

novel closed form 10.1109/TWC.2019.2954866

新颖的封闭形式

Thereafter, novel closed-form expressions for key performance metrics, namely, outage probability, average bit error probability and spectral efficiency, are derived.

此后，推导出关键性能指标的新的封闭式表达式，即中断概率、平均误码概率和频谱效率。

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novel closed form 10.1109/JSAC.2021.3088632

新颖的封闭形式

We derive novel closed-form downlink HE and uplink spectral efficiency (SE) expressions that take hardware impairments of UAV into account.

我们推导了新的封闭形式的下行链路 HE 和上行链路频谱效率 (SE) 表达式，其中考虑了无人机的硬件损伤。

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Spectral Efficiency sentence examples within deep neural network

deep neural network 10.1109/TVT.2021.3068368

深度神经网络

In the proposed scheme, the fully distributed transmit power control strategy of secondary users (SUs) is learned by means of a distributed deep neural network (DNN) structure in an unsupervised manner, such that the average spectral efficiency (SE) of the SUs is maximized whilst allowing the interference on primary users (PUs) to be regulated properly.

在所提出的方案中，二次用户（SUs）的完全分布式发射功率控制策略是通过分布式深度神经网络（DNN）结构以无监督方式学习的，使得SUs的平均频谱效率（SE）为最大化，同时允许适当调节对主要用户 (PU) 的干扰。

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deep neural network 10.12720/jait.12.2.119-127

深度神经网络

In this paper, we introduce a Deep Neural Network (DNN) to maximize the Proportional Fairness (PF) of the Spectral Efficiency (SE) of uplinks in Cell-Free (CF) massive Multiple-Input Multiple-Output (MIMO) systems.

在本文中，我们介绍了一种深度神经网络 (DNN)，以最大限度地提高无细胞 (CF) 大规模多输入多输出 (MIMO) 系统中上行链路的频谱效率 (SE) 的比例公平 (PF)。

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Spectral Efficiency sentence examples within input single output

input single output 10.1109/MIUCC52538.2021.9447678

输入单输出

This paper evaluates the evolution of Spectral Efficiency (SE) for different MIMO system performance compared to the conventional Single Input Single Output (SISO) system.

与传统的单输入单输出 (SISO) 系统相比，本文评估了不同 MIMO 系统性能的频谱效率 (SE) 演变。

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input single output 10.1109/TCOMM.2020.3039842

输入单输出

This FSIM scheme allows a higher Spectral Efficiency (SE) gain than the time and frequency IM dimensions in Single-Input Single-Output (SISO) systems.

这种 FSIM 方案允许比单输入单输出 (SISO) 系统中的时间和频率 IM 维度更高的频谱效率 (SE) 增益。

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Spectral Efficiency sentence examples within minimum mean squared

minimum mean squared 10.1109/LCOMM.2020.3041899

最小均方

Furthermore, we investigate the uplink spectral efficiency (SE) with maximum ratio (MR)/local minimum mean squared error (L-MMSE) combining and optimal large-scale fading decoding based on the phase-aware MMSE, phase-aware element-wise MMSE and linear MMSE (LMMSE) estimators.

此外，我们研究了具有最大比率 (MR)/局部最小均方误差 (L-MMSE) 组合的上行链路频谱效率 (SE)，以及基于相位感知 MMSE、相位感知元素的最佳大规模衰落解码MMSE 和线性 MMSE (LMMSE) 估计器。

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minimum mean squared 10.1109/LCOMM.2020.3031195

最小均方

Numerical results show that by appropriately setting the number of hidden neurons, the ELM achieves higher spectral efficiency and smaller BER, with fewer floating-point operations than the conventional linear MIMO receivers, namely the minimum mean squared error and maximum ratio receivers.

数值结果表明，通过适当设置隐藏神经元的数量，ELM实现了更高的频谱效率和更小的BER，与传统的线性MIMO接收器（即最小均方误差和最大比接收器）相比，浮点运算更少。

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Spectral Efficiency sentence examples within quadrature amplitude modulation

quadrature amplitude modulation 10.1109/APWCS50173.2021.9548774

正交幅度调制

5G NR also supports 1024-quadrature amplitude modulation (QAM) for 5G allowing to achieve higher peak data rates and improve spectral efficiency.

5G NR 还支持 5G 的 1024 正交幅度调制 (QAM)，从而实现更高的峰值数据速率并提高频谱效率。

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quadrature amplitude modulation 10.11591/IJEECS.V21.I2.PP1005-1013

正交幅度调制

Adaptive quadrature amplitude modulation (QAM) is a crucial scheme that enables the modern communication systems to overcome the adverse effects of channel fluctuations and maintain an acceptable spectral efficiency.

自适应正交幅度调制 (QAM) 是一种关键方案，它使现代通信系统能够克服信道波动的不利影响并保持可接受的频谱效率。

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Spectral Efficiency sentence examples within wavelength division multiplexing

wavelength division multiplexing 10.1109/JLT.2021.3070515

波分复用

Ultra-dense wavelength division multiplexing (uDWDM) shrinks channel spacing between WDM channels to decrease guard bands and increase spectral efficiency.

超密集波分复用 (uDWDM) 缩小了 WDM 通道之间的通道间距，以减少保护带并提高频谱效率。

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wavelength division multiplexing 10.3116/16091833/22/1/12/2021

波分复用

A recent global crisis associated with COVID-19 has encouraged millions of people to work from home, thus causing a drastic increase in overall network traffic, data-rate requirements and end network capabilities This has also produced more noise, cross-talk and undesirable optical-fibre nonlinearities, especially a four-wave mixing (FWM) effect that deteriorates performance of dense wavelength-division multiplexing (DWDM) systems A presence of FWM in the DWDM systems imposes increasing complexity and latency of networks, and decreases their spectral efficiency In its turn, this degrades efficient utilization of optical bandwidth To mitigate the above problems, we suggest a supervised regression modelling (SRM) A relevant SRM-DWDM approach performs self-parametric optimization of the DWDM systems with machine-learning techniques and finds real trade-offs among various factors that affect the FWM Our model reduces complexity of modelling and computational time, resulting in accurate and reliable prediction of parameter values We also evaluate the performance of our SRM-DWDM technique by comparing its data with the iterative results obtained for different parameters (e g , output signal-to-noise ratio, Q-factor, signal power and noise power) Finally, we specify the procedures necessary for global optimization of DWDM systems © 2021, Institute of Physical Optics All rights reserved.

最近与 COVID-19 相关的全球危机鼓励数百万人在家工作，从而导致整体网络流量、数据速率要求和终端网络能力急剧增加，这也产生了更多的噪音、串扰和不良光学- 光纤非线性，尤其是降低密集波分复用 (DWDM) 系统性能的四波混频 (FWM) 效应 DWDM 系统中存在 FWM 会增加网络的复杂性和延迟，并降低其频谱效率。反过来，这会降低光带宽的有效利用为了缓解上述问题，我们建议使用监督回归建模 (SRM) 相关的 SRM-DWDM 方法使用机器学习技术对 DWDM 系统进行自参数优化并找到真正的权衡在影响 FWM 的各种因素中，我们的模型降低了建模的复杂性和计算时间，从而获得了准确且参数值的可靠预测我们还通过将其数据与针对不同参数（例如，输出信噪比、Q 因子、信号功率和噪声功率）获得的迭代结果进行比较来评估我们的 SRM-DWDM 技术的性能。 , 我们指定了 DWDM 系统全局优化所需的程序 © 2021, Institute of Physical Optics 版权所有。

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Spectral Efficiency sentence examples within multiuser multiple input

multiuser multiple input 10.1007/S11277-021-08688-6

多用户多输入

The large scale multiuser multiple input multiple output (MU-MIMO) is one of the promising communication technology for 5G wireless networks as it offers reliability, high spectral efficiency and high throughput.

大规模多用户多输入多输出 (MU-MIMO) 是用于 5G 无线网络的有前途的通信技术之一，因为它提供了可靠性、高频谱效率和高吞吐量。

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multiuser multiple input 10.1109/IoT52625.2021.9469603

多用户多输入

We consider a two-tire HetNet with half duplex (HD) massive multiuser multiple-input multiple-output (MIMO) macrocell base stations (MBSs) to relax the coverage reduction, FD small cell base stations (SBSs) and FD user equipments (UEs) to improve spectral efficiency.

我们考虑了具有半双工 (HD) 大规模多用户多输入多输出 (MIMO) 宏蜂窝基站 (MBS) 的两层 HetNet 以放松覆盖缩减、FD 小型蜂窝基站 (SBS) 和 FD 用户设备 (UE) ) 以提高频谱效率。

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Spectral Efficiency sentence examples within co channel interference

co channel interference 10.1016/J.PHYCOM.2021.101414

同频干扰

Compared to existing orthogonal multiple access methods, NOMA can serve multiple users with better spectral efficiency by allowing co-channel interference, thus its reliability performance over various channel models needs further research.

与现有的正交多址接入方法相比，NOMA通过允许同信道干扰可以更好地为多用户服务，因此其在各种信道模型上的可靠性性能需要进一步研究。

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co channel interference 10.1515/freq-2021-0066

同频干扰

The simulation results demonstrate that our proposed technique optimally improves the BER and spectral efficiency in the long-range communication as compared to the fixed modulation schemes under the co-channel interference of surrounding base stations.

仿真结果表明，与周围基站同信道干扰下的固定调制方案相比，我们提出的技术在远程通信中优化了 BER 和频谱效率。

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Spectral Efficiency sentence examples within full duplex communication

full duplex communication 10.1109/APWC52648.2021.9539530

全双工通信

STAR is a technology that allows reuse of the channel bandwidth in a full duplex communication mode, therefore theoretically doubling the channel throughput and improving the spectral efficiency of the system [1].

STAR是一种允许在全双工通信模式下复用信道带宽的技术，因此理论上可以使信道吞吐量翻倍，提高系统的频谱效率[1]。

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full duplex communication 10.1007/s11277-020-08053-z

全双工通信

Since radio frequency (RF) energy harvesting is a way to charge stand-alone or low-power machines in IoT and full-duplex communication potentially doubles spectral efficiency, this paper proposes a multiple access control that incorporates RF energy harvesting and full-duplex communication into the TDMA based interface with a reservation scheme.

由于射频 (RF) 能量收集是一种为物联网中的独立或低功率机器充电的方式，并且全双工通信可能使频谱效率翻倍，因此本文提出了一种结合射频能量收集和全双工通信的多路访问控制使用预留方案进入基于 TDMA 的接口。

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Spectral Efficiency sentence examples within user multiple input

user multiple input 10.3390/ELECTRONICS10111307

用户多输入

This paper investigates the trade-off between spectral efficiency (SE) and energy efficiency (EE) in the RIS-aided multi-user multiple-input single-output downlink.

本文研究了RIS辅助多用户多输入单输出下行链路中频谱效率（SE）和能量效率（EE）之间的权衡。

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user multiple input 10.14209/jcis.2021.14

用户多输入

In this letter, a methodology to optimize the spectral efficiency in downlink massive single-user multiple-input multiple-output (SU-MIMO) millimeter-wave (mmWave) systems is proposed.

在这封信中，提出了一种优化下行链路大规模单用户多输入多输出 (SU-MIMO) 毫米波 (mmWave) 系统中的频谱效率的方法。

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Spectral Efficiency sentence examples within asymmetrically clipped optical

asymmetrically clipped optical 10.1109/twc.2021.3109735

非对称削波光学

In this paper, we study the spectral efficiency (SE) and energy efficiency (EE) of asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) for visible light communication (VLC).

在本文中，我们研究了用于可见光通信 (VLC) 的非对称限幅光学正交频分复用 (ACO-OFDM) 的频谱效率 (SE) 和能量效率 (EE)。

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Spectral Efficiency sentence examples within non orthogonal multiple

Non-orthogonal multiple access (NOMA) is regarded as a promising technology to provide high spectral efficiency and support massive connectivity in 5G systems. 非正交多址接入 (NOMA) 被认为是一种很有前途的技术，可提供高频谱效率并支持 5G 系统中的大规模连接。

Spectral Efficiency sentence examples within orthogonal frequency division

Spectral Efficiency sentence examples within bit error rate

Therefore, a new comparative study in terms of spectral efficiency and bit error rate for 1-D, 2-D, and 3-D asynchronous and synchronous OCDMA systems is carried out. 因此，针对 1-D、2-D 和 3-D 异步和同步 OCDMA 系统的频谱效率和误码率进行了新的比较研究。

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Spectral Efficiency sentence examples within multiple input multiple

Massive MIMO (multiple input multiple output) systems are best suitable for mmWave communications improving throughput and spectral efficiency in 5G. 大规模 MIMO（多输入多输出）系统最适合用于提高 5G 吞吐量和频谱效率的毫米波通信。

Spectral Efficiency sentence examples within massive multiple input

Spectral Efficiency sentence examples within closed form expression

Spectral Efficiency sentence examples within wireless communication system

In contemporary wireless communication systems, the multiple-input and multiple-output systems are extensively utilized due to their enhanced spectral efficiency and diversity. 在当代无线通信系统中，多输入多输出系统由于其增强的频谱效率和多样性而被广泛使用。

Spectral efficiency is a major concern for future 6G wireless communication systems. 频谱效率是未来 6G 无线通信系统的主要关注点。

Spectral Efficiency sentence examples within high data rate

Spectral Efficiency sentence examples within cell free massive

Cell-free massive multiple-input multiple-output (MIMO) systems are envisioned to achieve the improved spectral efficiency by supporting users via nearby access points (APs). 设想无蜂窝大规模多输入多输出 (MIMO) 系统通过附近的接入点 (AP) 支持用户来提高频谱效率。

Spectral Efficiency sentence examples within orbital angular momentum

Electromagnetic waves carrying orbital angular momentum (OAM) can improve the spectral efficiency of communication systems by multiplexing a number of OAM modes. 携带轨道角动量 (OAM) 的电磁波可以通过复用多个 OAM 模式来提高通信系统的频谱效率。

Orbital angular momentum modes have shown promising achievements, as data carriers, in ameliorating the transmission capacity and raising the spectral efficiency. 轨道角动量模式作为数据载体在改善传输容量和提高频谱效率方面已显示出可喜的成就。

Spectral Efficiency sentence examples within visible light communication

Multi-cell cognitive visible light communication is suggested to enhance spectral efficiency. 建议使用多细胞认知可见光通信来提高光谱效率。

Spectral Efficiency sentence examples within average power ratio

Spectral Efficiency sentence examples within channel state information

The spectral efficiency performance can approximate the optimal joint transceiver design performance without real-time channel state information. 频谱效率性能可以在没有实时信道状态信息的情况下逼近最佳联合收发器设计性能。

Spectral Efficiency sentence examples within inter symbol interference

However, it suffers from a loss of spectral efficiency as it requires a cyclic prefix (CP) to mitigate inter-symbol interference (ISI) and pilots to estimate the channel. 然而，它会损失频谱效率，因为它需要循环前缀 (CP) 来减轻符号间干扰 (ISI) 和导频来估计信道。

Spectral Efficiency sentence examples within mean square error

We aim to maximize the spectral efficiency of the users by minimizing the sum mean square error (MSE) of the users’ received symbols. 我们的目标是通过最小化用户接收符号的和均方误差 (MSE) 来最大化用户的频谱效率。

Spectral Efficiency sentence examples within frequency division multiplexing

In OFDM multiple carriers are used and it provides higher level of spectral efficiency as compared to Frequency Division Multiplexing (FDM). 在 OFDM 多载波中 与频分复用相比，它提供了更高水平的频谱效率 （FDM）。

Spectral Efficiency sentence examples within multiple input–multiple output

The massive multiple-input–multiple-output that enhances energy efficiency and spectral efficiency is the primary technology for fifth generation wireless networks. 提高能源效率和频谱效率的大规模多输入多输出是第五代无线网络的主要技术。

Spectral Efficiency sentence examples within differential chaos shift

In this paper, a new high spectral efficiency differential-chaos-shift-keying system based on the time-delay overlapping modulation technology (TDOP-DCSK) is proposed. 本文提出了一种基于时延重叠调制技术（TDOP-DCSK）的新型高频谱效率差分混沌键控系统。

Spectral Efficiency sentence examples within mean squared error

Compared to the benchmark channel estimation techniques, the proposed algorithms also achieve smaller mean squared error and higher achievable spectral efficiency. 与基准信道估计技术相比，所提出的算法还实现了更小的均方误差和更高的可实现频谱效率。

Spectral Efficiency sentence examples within novel closed form

Thereafter, novel closed-form expressions for key performance metrics, namely, outage probability, average bit error probability and spectral efficiency, are derived. 此后，推导出关键性能指标的新的封闭式表达式，即中断概率、平均误码概率和频谱效率。

We derive novel closed-form downlink HE and uplink spectral efficiency (SE) expressions that take hardware impairments of UAV into account. 我们推导了新的封闭形式的下行链路 HE 和上行链路频谱效率 (SE) 表达式，其中考虑了无人机的硬件损伤。

Spectral Efficiency sentence examples within deep neural network

Spectral Efficiency sentence examples within input single output

This paper evaluates the evolution of Spectral Efficiency (SE) for different MIMO system performance compared to the conventional Single Input Single Output (SISO) system. 与传统的单输入单输出 (SISO) 系统相比，本文评估了不同 MIMO 系统性能的频谱效率 (SE) 演变。

This FSIM scheme allows a higher Spectral Efficiency (SE) gain than the time and frequency IM dimensions in Single-Input Single-Output (SISO) systems. 这种 FSIM 方案允许比单输入单输出 (SISO) 系统中的时间和频率 IM 维度更高的频谱效率 (SE) 增益。

Spectral Efficiency sentence examples within minimum mean squared

Spectral Efficiency sentence examples within quadrature amplitude modulation

5G NR also supports 1024-quadrature amplitude modulation (QAM) for 5G allowing to achieve higher peak data rates and improve spectral efficiency. 5G NR 还支持 5G 的 1024 正交幅度调制 (QAM)，从而实现更高的峰值数据速率并提高频谱效率。

Spectral Efficiency sentence examples within wavelength division multiplexing

Ultra-dense wavelength division multiplexing (uDWDM) shrinks channel spacing between WDM channels to decrease guard bands and increase spectral efficiency. 超密集波分复用 (uDWDM) 缩小了 WDM 通道之间的通道间距，以减少保护带并提高频谱效率。

Spectral Efficiency sentence examples within multiuser multiple input

Spectral Efficiency sentence examples within co channel interference

Spectral Efficiency sentence examples within full duplex communication

Spectral Efficiency sentence examples within user multiple input

This paper investigates the trade-off between spectral efficiency (SE) and energy efficiency (EE) in the RIS-aided multi-user multiple-input single-output downlink. 本文研究了RIS辅助多用户多输入单输出下行链路中频谱效率（SE）和能量效率（EE）之间的权衡。

Spectral Efficiency sentence examples within asymmetrically clipped optical

Non-orthogonal multiple access (NOMA) is regarded as a promising technology to provide high spectral efficiency and support massive connectivity in 5G systems.

非正交多址接入 (NOMA) 被认为是一种很有前途的技术，可提供高频谱效率并支持 5G 系统中的大规模连接。

Therefore, a new comparative study in terms of spectral efficiency and bit error rate for 1-D, 2-D, and 3-D asynchronous and synchronous OCDMA systems is carried out.

因此，针对 1-D、2-D 和 3-D 异步和同步 OCDMA 系统的频谱效率和误码率进行了新的比较研究。

Massive MIMO (multiple input multiple output) systems are best suitable for mmWave communications improving throughput and spectral efficiency in 5G.

大规模 MIMO（多输入多输出）系统最适合用于提高 5G 吞吐量和频谱效率的毫米波通信。

In contemporary wireless communication systems, the multiple-input and multiple-output systems are extensively utilized due to their enhanced spectral efficiency and diversity.

在当代无线通信系统中，多输入多输出系统由于其增强的频谱效率和多样性而被广泛使用。

Spectral efficiency is a major concern for future 6G wireless communication systems.

频谱效率是未来 6G 无线通信系统的主要关注点。

Cell-free massive multiple-input multiple-output (MIMO) systems are envisioned to achieve the improved spectral efficiency by supporting users via nearby access points (APs).

设想无蜂窝大规模多输入多输出 (MIMO) 系统通过附近的接入点 (AP) 支持用户来提高频谱效率。

Electromagnetic waves carrying orbital angular momentum (OAM) can improve the spectral efficiency of communication systems by multiplexing a number of OAM modes.

携带轨道角动量 (OAM) 的电磁波可以通过复用多个 OAM 模式来提高通信系统的频谱效率。

Orbital angular momentum modes have shown promising achievements, as data carriers, in ameliorating the transmission capacity and raising the spectral efficiency.

轨道角动量模式作为数据载体在改善传输容量和提高频谱效率方面已显示出可喜的成就。

Multi-cell cognitive visible light communication is suggested to enhance spectral efficiency.

建议使用多细胞认知可见光通信来提高光谱效率。

The spectral efficiency performance can approximate the optimal joint transceiver design performance without real-time channel state information.

频谱效率性能可以在没有实时信道状态信息的情况下逼近最佳联合收发器设计性能。

However, it suffers from a loss of spectral efficiency as it requires a cyclic prefix (CP) to mitigate inter-symbol interference (ISI) and pilots to estimate the channel.

然而，它会损失频谱效率，因为它需要循环前缀 (CP) 来减轻符号间干扰 (ISI) 和导频来估计信道。

We aim to maximize the spectral efficiency of the users by minimizing the sum mean square error (MSE) of the users’ received symbols.

我们的目标是通过最小化用户接收符号的和均方误差 (MSE) 来最大化用户的频谱效率。

In OFDM multiple carriers are used and it provides higher level of spectral efficiency as compared to Frequency Division Multiplexing (FDM).

在 OFDM 多载波中与频分复用相比，它提供了更高水平的频谱效率（FDM）。

The massive multiple-input–multiple-output that enhances energy efficiency and spectral efficiency is the primary technology for fifth generation wireless networks.

提高能源效率和频谱效率的大规模多输入多输出是第五代无线网络的主要技术。

In this paper, a new high spectral efficiency differential-chaos-shift-keying system based on the time-delay overlapping modulation technology (TDOP-DCSK) is proposed.

本文提出了一种基于时延重叠调制技术（TDOP-DCSK）的新型高频谱效率差分混沌键控系统。

Compared to the benchmark channel estimation techniques, the proposed algorithms also achieve smaller mean squared error and higher achievable spectral efficiency.

与基准信道估计技术相比，所提出的算法还实现了更小的均方误差和更高的可实现频谱效率。

Thereafter, novel closed-form expressions for key performance metrics, namely, outage probability, average bit error probability and spectral efficiency, are derived.

此后，推导出关键性能指标的新的封闭式表达式，即中断概率、平均误码概率和频谱效率。

We derive novel closed-form downlink HE and uplink spectral efficiency (SE) expressions that take hardware impairments of UAV into account.

我们推导了新的封闭形式的下行链路 HE 和上行链路频谱效率 (SE) 表达式，其中考虑了无人机的硬件损伤。

This paper evaluates the evolution of Spectral Efficiency (SE) for different MIMO system performance compared to the conventional Single Input Single Output (SISO) system.

与传统的单输入单输出 (SISO) 系统相比，本文评估了不同 MIMO 系统性能的频谱效率 (SE) 演变。

This FSIM scheme allows a higher Spectral Efficiency (SE) gain than the time and frequency IM dimensions in Single-Input Single-Output (SISO) systems.

这种 FSIM 方案允许比单输入单输出 (SISO) 系统中的时间和频率 IM 维度更高的频谱效率 (SE) 增益。

5G NR also supports 1024-quadrature amplitude modulation (QAM) for 5G allowing to achieve higher peak data rates and improve spectral efficiency.

5G NR 还支持 5G 的 1024 正交幅度调制 (QAM)，从而实现更高的峰值数据速率并提高频谱效率。

Ultra-dense wavelength division multiplexing (uDWDM) shrinks channel spacing between WDM channels to decrease guard bands and increase spectral efficiency.

超密集波分复用 (uDWDM) 缩小了 WDM 通道之间的通道间距，以减少保护带并提高频谱效率。

This paper investigates the trade-off between spectral efficiency (SE) and energy efficiency (EE) in the RIS-aided multi-user multiple-input single-output downlink.

本文研究了RIS辅助多用户多输入单输出下行链路中频谱效率（SE）和能量效率（EE）之间的权衡。