2PSK非相干解调原理研究  

Research on Principle of Non-Coherent Demodulation for 2PSK

作　　者：李世银[1] 刘玉英[1] 宋金铃[1] 陈世海[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《中国矿业大学学报》2002年第3期315-318,共4页Journal of China University of Mining & Technology

摘　　要：从克服二进制移相键控 ( 2 PSK)的“倒π”现象出发 ,提出一种 2 PSK非相干解调法 ,并对其解调原理和抗噪声性能进行了详细的分析介绍 .2 PSK非相干解调法将经延时半个载波周期的接收信号与原接收信号相加 ,检测出两相邻码元载波相位变化情况 ,从而解调出数字信息 .该解调方法能克服“倒 π”现象 ,有较强的内在检错特性及抗噪声性能 。To overcome the problem of 'inverse π' of 2PSK(Binary Phase shift keying), a new kind of non coherent demodulation for 2PSK was proposed, and the principle and noise resistance of the system was analyzed. Non coherent demodulation for 2PSK detects relation of carrier wave phase of the interval symbol by the (half period of carrier wave) delay and the adder, then the data is demodulated. The demodulation technique has some strongpoint such as high capability in intrinsic error detection and noise resistance and easy implementation.

关 键 词：2PSK “倒π” 非相干解调 误码率 

分 类 号：TN919.3[电子电信—通信与信息系统]