摘要
介绍了一种新的多址方式IDMA,它采用不同的交织序列作为用户的标识特征。作为一种特殊的CDMA,IDMA继承了CDMA的很多优点,而且它以非常低的解码代价支持多用户,具有复杂度低、运算量小的特点。IDMA与迭代多用户检测技术相结合,在计算复杂度增加较少的情况下,有效提高了频谱利用率。
This article describes an interleave-division multiple access （IDMA） scheme in which interleavers are employed as the only means of user separation. As a special form of CDMA, IDMA inherits the advantages of CDMA mentioned earlier. Furthermore, it allows a low-complexity MUD technique applicable to systems with large numbers of users in multipath channels, and runs to low complexing and small computation. The systems combine the two techniques： BCB-MUD and IDMA, achieve rely high spectrum efficiency while call a little complexing addition.
出处
《信息技术》
2007年第12期47-49,52,共4页
Information Technology
