码率嵌入式高码率差分空时编码  

A rate-embedded differential space-time code with high rate

作　　者：朱凌燕[1] 张红伟[1] 余松煜[1] 米楠[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《高技术通讯》2006年第7期687-690,共4页Chinese High Technology Letters

基　　金：863计划重大专项（2003AA12331007）和国家自然科学基金（60332030,60272079）资助项目.

摘　　要：为了提高传输码率,将具有高码率的全分集全码率（FDFR）空时码嵌入到低码率的传统差分空时编码中,提出了一种码率嵌入式的差分空时编码方法,该编码方案具有编码增益高,误码性能好等优点.仿真结果表明,与传统的差分空时编码方案（酉差分空时编码和差分空时分组编码）相比,新编码方法具有很好的误码性能,特别是在高传输码率和接收天线较多情况下,其误码性能优势越明显.In order to improve the transmission rate, a rate-embedded differential space-time code is proposed by embedding the full diversity full rate codes into the traditional differential space-time codes. Theoretic analysis shows that the proposed theme has many advantages, such as high coding gain and low bit error probability. Moreover, the simulation resuits testify that the new coding scheme can achieve desirable performance, as compared with the traditional differential space time coding schemes （ unitary differential space time code, differential space time block code）, especially when transmission rate is high and more receiving antennas are employed.

关 键 词：多输入多输出 差分空时编码 码率嵌入式 低解码复杂度 

分 类 号：TN929.11[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]