摘要
调频信号具有很好的抗航天器飞行尾焰干扰能力。在同信噪比下,调频信号解调误码率高于调相信号,所以调频信号解调需要提高增益。多符号检测(MSD)和Turbo乘积(TPC)编码的联合算法可以提高调频信号的增益。介绍了MSD和TPC编码的联合算法和设计结构,根据仿真结果对比了差分解调、MSD解调、MSD与TPC编码的联合算法在各种信噪比下的性能指标,证明了该联合算法提高了近7 d B的增益。
The PCM-FM signal has better anti-interference capability for aerospace-craft jetting out the flame.In the same signal- noise ratio,the BER of PCM-FM signal demodulation is higher than that of phase modulated signal, so it is required to improve the gain of PCM-FM signal demodulation.The joint algorithm of multi-signal detection （MSD） and Turbo product coding （TPC） can improve the gain of PCM-FM signal.This paper introduces the joint algorithm of MSD and TPC coding and design structure.The performance index of differential demodulation, MSD demodulation, as well as MSD and TPC coding joint algoritm are compared in various signal-noise ratios, and the results show this joint algorithm can increase the gain of 7 dB.
出处
《无线电工程》
2016年第4期79-82,共4页
Radio Engineering
