基于NDLMS算法的DPSK信号的解调  

DPSK Signal Demodulation Based on NDLMS Adaptive Algorithm

作　　者：王吉林[1] 曾晓宏[2] 

机构地区：[1]盐城工学院电信学院,江苏盐城224003 [2]重庆电子科技职业学院电子系,重庆401147

出　　处：《常州工学院学报》2005年第4期31-34,41,共5页Journal of Changzhou Institute of Technology

摘　　要：提出了采用自适应的NDLMS(归一化去相关最小均方误差算法)解调DPSK(差分相移键控)调制信号的方法,并利用SystemView仿真工具对解调性能进行了分析。针对小信噪比下门限失效的问题,利用误差信号来改进门限判决的质量。仿真表明采用自适应算法解调性能良好,且易于数字实现。This paper presents a method of DPSK signal demodulation by NDLMS adaptive algorithm, and analyzes its performance by System View. By using the error signals to reduce the demodulated signals, the performance of adjudgement will be better when the SNR is low. It is indicated by simulation experiments that this method of demodulation has good performance and it is easy to realize by digital signal processing technology.

关 键 词：归一化去相关LMS 解调 DPSK SYSTEM View仿真 

分 类 号：TN911[电子电信—通信与信息系统]