基于混合时频域接收的LTE PRACH前导序列滑动窗检测方法
Sliding Window Method of LTE PRACH Preamble Detection Based on Mixed Time-frequency Domain Receiver
本文简明介绍了实现PRACH接收的混合时频域接收方法，对PRACH的上行发送和接收链路建模，重点分析信道建模方法、接收端滤波器设计和功率时延谱检测。功率时延谱的检测方法对检测性能和效率有决定性影响。本文推导出检测门限的理论值，给出AWGN和ETU70信道条件下选择不同检测窗长对检测性能的影响，得到仿真结果以及结论。仿真结果显示使用多重滑动窗检测方法具有低计算复杂度，并且在满足对多用户上行同步时间估计准确性的前提下，满足协议对虚警概率和漏检概率的要求。
his paper concisely presents the basic hybrid time-frequency domain method of Physical Random Access Channel (PRACH) for long term evolution (LTE) receiver for implementation. A model of User Equipment (UE) transmitter and receiver channel is established. The design of anti-aliasing filter ,channel model and power delay profile (PDP) detection are given in detail. Detection method of power delay profile (PDP) determines the detection performance and efficiency. The theory detection threshold is derived. The performance of different lengths of detection windows is proposed with different channels, such as AWGN and ETU70. Simulation results show that the sliding window detection method fulfills the accuracy of timing advance estimation under the requirements of detection probability and false alarm probability.
王文博、徐明、彭涛
无线通信通信
LTE功率时延谱检测门限虚警概率漏检概率噪声估计
LTEPDPetection threshold settingFalse alarm probabilityMiss detection probabilityNoise estimation
王文博,徐明,彭涛.基于混合时频域接收的LTE PRACH前导序列滑动窗检测方法[EB/OL].(2014-09-18)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/201409-216.点此复制
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