OQPSK信号符号与载波相位联合同步技术  

Associated Synchronization of Timing and Carrier Phase and Frequency for OQPSK Signal

作　　者：王晓亚[1] 王晓天 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]北重阿尔斯通(北京)电气装备有限公司,北京100040

出　　处：《无线电通信技术》2011年第4期50-52,共3页Radio Communications Technology

摘　　要：偏移四相相移键控(OQPSK)是一种适用于在限带非线性信道中使用的高效恒包络数字调制技术。在非协作通信中,针对OQPSK信号的盲解调面临位定时提取算法受相位偏移敏感的特性,以及估计参数误差大的问题,采用了位定时与载波相位联合同步的算法实现了OQPSK信号的相干解调,解决了这些问题,仿真结果证明此算法的性能非常好,与理论值非常接近。The offset quadrature phase-shift-keying（OQPSK） is an effective digital constant envelope modulation for band-limited nonlinear channel. In non-cooperative communication,OQPSK demodulation faces the problem of mutual effect between timing and carrier phase and frequency,as well as serious error of parameter estimating.The paper suggests an associated synchronization of timing and carrier phase and frequency,which solves the problem.The simulation results also prove the good performance of this method,which is very close to the theoretical value.

关 键 词：OQPSK信号 联合同步 符号同步 载波同步 

分 类 号：TN941.4[电子电信—信号与信息处理]