LTE初始小区搜索中同步信号检测的改进算法

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI:10.1109/ChinaCom.2011.6158342

Yukai Gao, Gang Zhu, Xia Chen, Di Wu, Buri Ban

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引用次数: 12

摘要

对于第三代合作伙伴计划(3GPP)中的长期演进(LTE)系统，同步信号检测算法的计算非常复杂。根据主同步信号(PSS)和次同步信号(SSS)的特性，本文提出了一种改进算法，将接收到的样本与局部同步信号序列的和进行一次相关处理，得到PSS的位置，并预先检测SSS的位置，减少SSS的检测次数。对传统算法和改进算法的理论推导和复杂度进行了推导和比较。结果表明，改进后的算法至少可以减少60%的计算量。最后通过仿真，该算法在高迁移率信道模型空间信道扩展模型(SCME)中具有优异的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A modified algorithm of synchronization signal detection for LTE initial cell search

For the Long Term Evolution (LTE) system in 3rd Generation Partnership Project (3GPP), the calculation of synchronization signal detection algorithm is very complex. According to the properties of the primary synchronization signal (PSS) and the secondary synchronization signal (SSS), a modified algorithm is proposed in this paper, which processes correlation of the received samples only once with sum of local PSS sequences to obtain the position of PSS and detects the position of SSS previously to reduce the times of SSS detection. The theoretical derivation and complexity of both conventional and modified algorithms are derived and compared. It comes to the conclusion that the modified algorithm can reduce at least 60% calculation. Finally through simulation, the algorithm has excellent performance in high mobility channel model Spatial Channel Model Extended (SCME).

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来源期刊

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)

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