一种LTE-Advanced系统频偏估计中的极性翻转消除方法

doi:10.11959/j.issn.1000-0801.2015204

Abstract

Abstract:

Traditional fractional frequency offset（FFO）estimation algorithm pay less attention to FFO polarity estimation.Noise and channel fading induced FFO estimation polarity reversion degrades the frequency synchronization performance inevitably.An efficient FFO polarity detection method was proposed in LTE-Advanced system to solve the problem，which utilized the mirror symmetry property of time-domain primary synchronization signal（PSS）.Numerical results show that the proposed method can depress FFO polarity reversion efficiently.

Key words: frequency synchronization, polarity reversion elimination, LTE-Advanced, downlink, fractional frequency offset

Guoqing Jia,Shanji Chen,Chao Chen,Xiaohong Ji,Weidong Fang. A Polarity Reversion Elimination Method for LTE-Advanced Frequency Offset Estimation[J]. Telecommunications Science, 2015, 31(8): 58-62.

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References 11

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参数类型	配置
信道类型	ETU
最大多普勒偏移/H	300
FFT大小	128
带宽/（Mbit·s^-1）	1.4
上下行配置模式	5
CP 模式	通用CP
TDD/FDD	TDD
发射天线数	1
接收天线数	1

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A Polarity Reversion Elimination Method for LTE-Advanced Frequency Offset Estimation

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