正交多进制扩频的二元软信息提取方法  

Binary Soft Information Extraction Method for Orthogonal M-ary Spread Spectrum

作　　者：牛桂兵[1] NIU Gui-bing(No.54 Institute of CETC,Shijiazhuang Hebei 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《通信技术》2019年第3期540-543,共4页Communications Technology

摘　　要：从译码器软信息提取的一般原理为计算接收矢量与参考波形的欧氏距离出发,阐述了采用纠错编码技术的通信接收机流行的构造方式,通过分析正交多进制扩频参考波形的比特映射特点、比特信息的分布规则,提出M进制正交扩频接收机二元软信息提取方法。具体地,仿真分析无纠错、软判决译码的接收机性能,评估编码增益,并以使用相同纠错编码的QPSK调制接收机性能改善为参考,对所提出的二元软信息提取方法的有效性进行了评估。Based on that the general principle of soft-information extraction in decoder is to calculate the Euclidean distance of between the received vector and the reference waveform,the main construction method of communication receiver using error-correcting coding technology is expounded,and by analyzing the bit mapping characteristics of orthogonal multi-ary spread spectrum reference waveform and the distribution rules of bit information,a binary soft information extraction method for M-ary orthogonal spread spectrum receiver is proposed.Specifically,simulation analysis is done on the performance of the receiver with no error correction and soft decision decoding,and the coding gain is evaluated.And with the performance improvement of QPSK modulation receiver using the same error correction code as the reference,the effectiveness of the proposed binary soft information extraction method is discussed and evaluated.

关 键 词：M进制正交调制 二元映射 软信息 波形 

分 类 号：TN911.8[电子电信—通信与信息系统]