电讯技术2017，Vol.57Issue(6)：703-709,7.DOI:10.3969/j.issn.1001-893x.2017.06.015
直接序列扩频分组映射码索引调制
Direct Sequence Spread Spectrum Block Mapping Code Index Modulation
摘要
Abstract
To solve the problem of using large quantities of pseudo random (PN) codes at transmitter of the direct sequence spread spectrum code index modulation(DSSS-CIM),this paper proposes a new scheme named block mapping code index modulation by using less PN codes.This scheme sets multiple modulation sub-blocks in parallel to modulate independently,at the same time,it picks up PN codes that are needed in -phase and orthogonal branch intensively,and then spreads the in-phase and orthogonal component of the modulation symbol after sequenced by the index value.The analysis and simulation results shows,at the same spectral efficiency,this scheme uses less PN codes than DSSS-CIM,and keeps about-1 dB bit error rate(BER) advantage when the signal-to-noise ratio(SNR) is higher than 10 dB under the additive noise channel.What's more,its performance is much superior to that of the spatial modulation by using the maximum likelihood detector.关键词
直接序列扩频/码索引调制/分组映射/伪随机码组合Key words
direct sequence spread spectrum (DSSS)/code index modulation (CIM)/block mapping/pseudo-random codes combination分类
信息技术与安全科学引用本文复制引用
邢峰英,郑鹤,刘永花,江治林,葛利嘉..直接序列扩频分组映射码索引调制[J].电讯技术,2017,57(6):703-709,7.基金项目
国家自然科学基金资助项目(62171251) （62171251）
