A Novel PSS Timing Synchronization Algorithm for Cell Search in 5G NR System
A Novel PSS Timing Synchronization Algorithm for Cell Search in 5G NR System
复制标题
一种用于 5G NR 系统中小区搜索的新型 PSS 定时同步算法
DOI：
10.1109/access.2020.3048692
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发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
李贺兵
中科院分区：
文献类型：
--
作者：
王丹;梅志强;张翰青;李贺兵
Cell search is the first step to establish downlink synchronization between user equipment (UE) and base station (BS) in the fifth generation (5G) new radio (NR) system. However, frequency offset and noise will cause a massive loss of synchronization performance. To solve this problem, a novel timing synchronization algorithm of primary synchronization signal (PSS) with anti-frequency offset and anti-noise is proposed, which includes the improved coarse synchronization algorithm based on Fourier transform and the fine synchronization algorithm based on the triple auto-correlation algorithm. The improved coarse synchronization algorithm not only has a strong frequency offset resistance, especially for large frequency offset, but also obtains the estimated frequency offset. The fine synchronization algorithm is more resistant to noise than the conventional algorithm. Finally, the algorithm analysis and simulation results show that the improved algorithm can work very well even when the normalized frequency offset increases to greater than 0.8, but the conventional algorithm fails to synchronize properly. Meanwhile, when the SNR is as low as −6dB, the detection accuracy of the timing synchronization based on the proposed fine synchronization algorithm is improved by about 31.7% compared with the conventional algorithm.
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DOI：
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发表时间：
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期刊：
2009 11th International Conference on Computer Modelling and Simulation
影响因子：
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