【摘要】 设计了完整的LTE系统小区初始搜索算法,包括定时同步、频偏估计、循环前缀类型盲检测、扇区ID和小区ID组识别、帧同步算法,其中定时同步和频偏估计以及扇区ID识别由主同步信号在时域完成,循环前缀类型盲检测、小区ID组识别、帧同步由辅同步信号在频域完成。理论分析与仿真结果表明,所设计算法在AWGN与多径信道下均具有良好的性能,能够满足LTE系统小区搜索的性能需求。更多还原

【Abstract】 A detailed algorithm design for initial cell search in LTE system is proposed,which includes timing synchronization,frequency offset estimation,blind detection type of cycle prefix,cell ID and cell ID group identifying and frame synchronization.And among these,the timing synchronization,frequency offset estimation and cell ID identifying are accomplished by primary synchronization signal in time-domain,while blind detection type of cycle prefix,the cell ID group identifying and frame synchronization achieved by secondary synchronization signal in frequency-domain.Both the theory analysis and simulation results show that the algorithm proposed has good performance both in AWAG and multipath fading channels,and can satisfy the performance demand by cell search in LTE system.更多还原