一种新的BPSK中频数字正交解调方法  

A New Intermediate Frequency Digital Orthogonal Demodulating Method for BPSK

作　　者：胡登鹏[1] 李宏伟[1] 蒋莉[1] 田文华[1] 朱晓鹏[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《空军工程大学学报（自然科学版）》2007年第3期65-69,共5页Journal of Air Force Engineering University(Natural Science Edition)

摘　　要：基于前向结构设计思想,提出了一种适用于通用通信平台的BPSK信号中频数字正交解调方法,并给出了该解调方法中的主要算法——频偏估计算法及定时恢复算法。最后,对该中频解调方法的定时恢复算法和频偏估计算法的均方误差性能及系统误码性能进行了计算机仿真,仿真结果表明,该方法能有效地实现BPSK信号的中频数字正交解调。A new intermediate frequency digital demodulating method is proposed based on orthogonal device and feed - forward implementation, which can be easily implemented on universal communication system. The main algorithm of this demodulating method, including frequency offset estimation algorithm and timing recovery algorithm, is also discussed in detail. The mean square error （MSE） performances of these two main algorithms and of the bit error ratio （BER） of this demodulating method are simulated. The computer simulation result demonstrates the validity of this new intermediate frequency digital demodulating method.

关 键 词：BPSK 定时恢复 频偏估计 中频数字解调 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]