In response to the downlink synchronization requirements of the user equipment(UE)or third-party radio equipment in fifth-generation(5G)mobile communication systems,a synchronization algorithm of primary synchroni-zat...In response to the downlink synchronization requirements of the user equipment(UE)or third-party radio equipment in fifth-generation(5G)mobile communication systems,a synchronization algorithm of primary synchroni-zation signal(PSS)was designed and developed in the 5G system based on block cross-correlation.According to the new characteristics of the 5G synchronization channel and broadcast channel,starting from the traditional downlink synchronization algorithm of long-term evolution(LTE),the detection performance of the algorithm under a low signal-to-noise ratio(SNR)is improved by introducing an incoherent accumulation,and the new scheme of joint coarse frequency offset estimation is used to improve the frequency offset estimation performance.Finally,the performance of the proposed synchronization algorithm is verified by conducting a simulation on a 5G downlink simulation platform based on MATLAB software.Simulation results show that the improved downlink synchronization algorithm has stable performance in the tapped delay line-C(TDL-C)and additive white Gaussian noise(AWGN)channels with large frequency deviation and low SNR.展开更多
首先介绍了5G NR SS/PBCH块的结构和候选SS/PBCH块的时间位置,每个SS/PBCH块在频域上由240个连续的子载波、在时域上由4个OFDM符号组成,根据SS/PBCH块子载波间隔的不同,候选SS/PBCH块的时间位置共有5种Case。然后分析了5G NR的下行同步...首先介绍了5G NR SS/PBCH块的结构和候选SS/PBCH块的时间位置,每个SS/PBCH块在频域上由240个连续的子载波、在时域上由4个OFDM符号组成,根据SS/PBCH块子载波间隔的不同,候选SS/PBCH块的时间位置共有5种Case。然后分析了5G NR的下行同步过程,包括搜索同步信号、解码PBCH、解码SIB1和其他SI。最后给出了下行同步过程的参数配置建议,建议根据基站类型、小区类型设置SS/PBCH块的数量,根据基站类型、服务需求设置SS/PBCH周期,PCI设置应避免MOD 4干扰。展开更多
基金The Social Development Projects of Jiangsu Science and Technology Department(No.BE2018704).
文摘In response to the downlink synchronization requirements of the user equipment(UE)or third-party radio equipment in fifth-generation(5G)mobile communication systems,a synchronization algorithm of primary synchroni-zation signal(PSS)was designed and developed in the 5G system based on block cross-correlation.According to the new characteristics of the 5G synchronization channel and broadcast channel,starting from the traditional downlink synchronization algorithm of long-term evolution(LTE),the detection performance of the algorithm under a low signal-to-noise ratio(SNR)is improved by introducing an incoherent accumulation,and the new scheme of joint coarse frequency offset estimation is used to improve the frequency offset estimation performance.Finally,the performance of the proposed synchronization algorithm is verified by conducting a simulation on a 5G downlink simulation platform based on MATLAB software.Simulation results show that the improved downlink synchronization algorithm has stable performance in the tapped delay line-C(TDL-C)and additive white Gaussian noise(AWGN)channels with large frequency deviation and low SNR.
文摘首先介绍了5G NR SS/PBCH块的结构和候选SS/PBCH块的时间位置,每个SS/PBCH块在频域上由240个连续的子载波、在时域上由4个OFDM符号组成,根据SS/PBCH块子载波间隔的不同,候选SS/PBCH块的时间位置共有5种Case。然后分析了5G NR的下行同步过程,包括搜索同步信号、解码PBCH、解码SIB1和其他SI。最后给出了下行同步过程的参数配置建议,建议根据基站类型、小区类型设置SS/PBCH块的数量,根据基站类型、服务需求设置SS/PBCH周期,PCI设置应避免MOD 4干扰。
