Research Article
Research on Timing Synchronization Algorithm of Cell Search in 5G NR System
@INPROCEEDINGS{10.1007/978-3-030-67720-6_54, author={Hang Jiang and Longhan Cao and Zhizhong Zhang and Bingguang Deng}, title={Research on Timing Synchronization Algorithm of Cell Search in 5G NR System}, proceedings={Communications and Networking. 15th EAI International Conference, ChinaCom 2020, Shanghai, China, November 20-21, 2020, Proceedings}, proceedings_a={CHINACOM}, year={2021}, month={2}, keywords={5G NR system Timing synchronization Superposition Differential}, doi={10.1007/978-3-030-67720-6_54} }- Hang Jiang
Longhan Cao
Zhizhong Zhang
Bingguang Deng
Year: 2021
Research on Timing Synchronization Algorithm of Cell Search in 5G NR System
CHINACOM
Springer
DOI: 10.1007/978-3-030-67720-6_54
Abstract
For the 5G NR systems in the Third Generation Partnership Project(3GPP), the computation of synchronous signal detection algorithms is very complex. Based on the characteristics of the domain synchronous signal, this paper proposed a differential and superimposed interdependent cross correlation detection algorithm, which only performed a differential interdependent processing of the received signal with the sum of the local PSS sequence to obtain the position of the relevant peak and detects the position of the coarse synchronous point, and further performed local correlation of the coarse synchronous point, and detected the precise synchronous point according to the maximum peak, which reduced the computational complexity. A theoretical derivation and a comparative complexity analysis between the traditional cross correlation and the improved algorithms shows that the differential and superposition cross correlation joint detection algorithm has high efficiency, low complexity and strong resistance to frequency deviation, which meets the synchronization requirements of 5G NR systems.
