Spreading code allocation for downlink MC-CDMA

被引：2
|
作者：
Cheng, Yu-Chieh [1 ]
Jao, Chin-Kuo [1 ]
Wei, Shyue-Win [1 ]
机构：
[1] Natl Chi Nan Univ, Grad Inst Commun Engn, Puli 545, Taiwan
来源：
2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13 | 2008年
关键词：
MC-CDMA; spreading code allocation; consistent sequency;
D O I：
10.1109/ICC.2008.950
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
The paper illustrates that multiple access interference (MAI) can be reduced by arranging the spreading codes in multi-carrier code division multiple access (MC-CDMA) systems. An effective spreading code allocation procedure using simple least square (LS) channel estimation is presented to reduce the MAI in downlink MC-CDMA systems. Moreover, the spreading codes chosen by the method are in a consistent sequence. Using this code selection method, the system capacity of MC-CDMA can he effectively increased without increasing too much system complexity. Simulation results show that the presented method can work well for both time-invariant and fading channels.
引用
收藏
页码：5063 / 5067
页数：5
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