计算机工程Issue(4)：92-95,101,5.DOI:10.3969/j.issn.1000-3428.2015.04.017
X信道中一种改进的空时编码传输方案
An Improved Space-time Coding Transmission Scheme in X Channel
摘要
Abstract
An improved space-time coding transmission scheme is proposed in X channel with two antennas at each user. Each user employs full-rate full-diversity space-time block code. Part elements of each codeword are rotated by a certain angle and each codeword is pre-coded twice. One-level pre-coding aligns the unwanted codewords at each receiver. The unwanted codewords for each receiver are eliminated by the introduction of zero vector at each codeword and the linear operation at the receivers. The wanted codewords keeps orthogonal by the other pre-coding,thus the multi-user interference is cancelled. The transmission efficiency is improved compared with the existing space-time coding transmission for the same scene. Simulation results show that, with the same transmission rate, the transmission efficiency of the proposed scheme it can improve transmission efficiency,and has high reliability in same transmission rate.关键词
X信道/空时分组码/预编码/多用户干扰/传输效率/全分集Key words
X channel/space-time block code/pre-coding/multi-user interference/transmission efficiency/full diversity分类
信息技术与安全科学引用本文复制引用
李亚,田心记..X信道中一种改进的空时编码传输方案[J].计算机工程,2015,(4):92-95,101,5.基金项目
国家自然科学基金资助项目“面向组合服务的智能化接入控制关键技术研究”(61300124) （61300124）
河南省自然科学基金资助项目“卷积混合声音信号盲分离和增强方法研究”(132300410461)。 （132300410461）
