UCHT complex sequences for downlink multi-carrier DS-CDMA systems

被引：0
|
作者：
Gu, ZH [1 ]
Xie, SL [1 ]
Rahardja, S [1 ]
机构：
[1] Inst Infocomm Res, Singapore 119613, Singapore
来源：
VTC2005-SPRING: 2005 IEEE 61ST VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS | 2005年
关键词：
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Downlink multi-carrier direct sequence code-division multiple-access (MC-DS-CDMA) often makes use of Walsh-Hadamard (WH) sequences to channelize different users and increase diversity gain. In this paper, recently introduced unified complex Hadamard transform (UCHT) sequences are for the first time applied as spreading sequences in MC-DS-CDMA. The quadri-phase UCHT complex sequences are orthogonal and easy to generate. Some of UCHT sequences provide better autocorrelation properties than orthogonal WH sequences. It is found that the system spread by UCHT sequences outperforms that spread by WH sequences in frequency selective fading channels.
引用
收藏
页码：392 / 395
页数：4
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