电讯技术2016，Vol.56Issue(7)：794-798,5.DOI:10.3969/j.issn.1001-893x.2016.07.014
一种高效的混合M元扩频通信方案
An Efficient Hybrid M-ary Spread Spectrum Communication Scheme
摘要
Abstract
In order to further improve the bandwidth efficiency and anti-intercept capability of spread spec-trum( SS) communication system, a new efficient M-ary SS communication scheme is proposed, which combines orthogonal SS and code phase shifting keying(CPSK) technique. In each branch of orthogonal channels,double M-ary biorthogonal SS modulation is adopted at first. Then every SS code is treated as a original code to adopt CPSK modulation,and the unattached pseudo noise( PN) code is chosen to achieve system synchronization. At the receiver,a circular correlator based on transform domain processing is em-ployed to despread the received signals. The simulations show that,the proposed scheme is easy to achieve synchronization,and is effective in improving the bandwidth efficiency and anti-intercept capability. The proposed scheme has great application value in the field of satellite covert communications and data link communications.关键词
直接序列扩频通信/M元扩频/双正交扩频/码相位循环移位调制/循环相关Key words
direct sequence spread spectrum communication/M-ary spread spectrum/dual orthogonal spread spectrum/code phase shifting keying/circular correlation分类
电子信息工程引用本文复制引用
刘跃宣,马志强,曾辉,余大波..一种高效的混合M元扩频通信方案[J].电讯技术,2016,56(7):794-798,5.
