Introduction to Prach Preamble (尘埃序言)

Prach Preamble 尘埃序言 - However, as the number of PRACH preambles is limited, a group’s size must be kept relatively small compared to the MTD population. ^[1] When multiple uplink users attempt to attach simultaneously, the base station receives superimposed NPRACH preambles and must detect all users and acquire their synchronization parameters: time-of-arrival (ToA) and residual carrier frequency offset (RCFO). ^[2]
然而，由于 PRACH 前导码的数量有限，与 MTD 种群相比，组的大小必须保持相对较小。 ^[1] 当多个上行链路用户尝试同时附着时，基站接收到叠加的 NPRACH 前导码，并且必须检测所有用户并获取它们的同步参数：到达时间（ToA）和残余载波频率偏移（RCFO）。 ^[2]

prach preamble processing

The method requires modification of LTE user equipment (UE) only in software at layer 2 and reuse the PRACH preamble processing (detection and estimation) at the base station (eNodeB). ^[1] The method requires modification of LTE user equipment (UE) only in software at Layer 2 and leverages the PRACH preamble processing (detection and estimation) at base station (eNodeB). ^[2]
该方法仅需要在第 2 层对 LTE 用户设备 (UE) 进行软件修改，并在基站 (eNodeB) 重用 PRACH 前导码处理（检测和估计）。 ^[1] 该方法仅需要在第 2 层的软件中修改 LTE 用户设备 (UE)，并利用基站 (eNodeB) 处的 PRACH 前导处理（检测和估计）。 ^[2]

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However, as the number of PRACH preambles is limited, a group’s size must be kept relatively small compared to the MTD population. 然而，由于 PRACH 前导码的数量有限，与 MTD 种群相比，组的大小必须保持相对较小。

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prach preamble processing

However, as the number of PRACH preambles is limited, a group’s size must be kept relatively small compared to the MTD population.

然而，由于 PRACH 前导码的数量有限，与 MTD 种群相比，组的大小必须保持相对较小。