一种基于LTE随机接入前导检测的实现方案  

An implementation design of preamble detection based on LTE random access

作　　者：陈发堂[1] 游杰[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《光通信研究》2011年第3期64-66,共3页Study on Optical Communications

基　　金：国家科技重大专项基金资助项目(2009ZX3002-009)

摘　　要：为了提高随机接入过程中前导检测的效率,文章提出一种基于频域检测的固定阈值算法,该算法在频域检测的基础上通过假设固定阈值来检测签名前导序列,与传统时域的检测算法相比,它降低了复杂度,而且在阈值的选取上更加简单。通过性能仿真证明了该算法在不同信道环境下都有良好的检测性能。In order to improve the efficiency of the preamble detection in random access,this paper proposes a frequency domain detection-based invariable threshold algorithm,which detects the signature preamble sequence on the basis of frequency domain detection by supposing the invariable threshold.Compared with the traditional time-domain detection algorithm,it reduces the complexity and is still simpler in the choice of threshold.Simulation results prove that this method shows good performances in various wireless channels.

关 键 词：长期演进 随机接入 前导检测 阈值 

分 类 号：TN929.5[电子电信—通信与信息系统]