短波SFH/GMSK系统差分相位解调方案的性能分析  

Performance analysis of differential phase detection in shortwave SFH/GMSK system

作　　者：彭菊红[1] 赵茂泰[2] 甘良才[2] 

机构地区：[1]湖北大学物理学与电子技术学院,湖北武汉430062 [2]武汉大学电子信息学院,湖北武汉430079

出　　处：《电波科学学报》2004年第6期776-779,784,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目 (6 0 372 0 5 6 )

摘　　要：提出了一种基于Viterbi算法的短波SFH/GMSK系统差分相位检测 (DPD)的解调方案 ,运用Matlab建立了短波SFH/GMSK系统模型 ,并在此模型上对不同参数下该解调方案的误比特率进行了数值仿真。其仿真结果表明 :DPD解调方案的误比特率可以达到 10 - 5～ 10 - 6 ,能满足短波信道性能的需求。In this paper, differential phase detection (DPD) based on Viterbi algorithm is proposed as a demodulate method in shortwave SFH/GMSK system. By using Matlab tool, the system model of shortwave SFH/GMSK is constructed, and bit error rate performance of this algorithm is simulated for different parameters. The simulation results show that the method can achieve the bit error rate of 10-5-10-6 and satisfy the requirement of shortwave frequency hopping communication system.

关 键 词：VITERBI算法 差分相位检测(DPD) GMSK调制 短波跳频通信 

分 类 号：TN91[电子电信—通信与信息系统]