Power and subcarrier allocation for multirate MC-CDMA system

被引：2
|
作者：
Sampath, PK [1 ]
Çam, H [1 ]
Natarajan, A [1 ]
机构：
[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA
来源：
2003 IEEE 58TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS1-5, PROCEEDINGS | 2003年
关键词：
multicarrier CDMA; MC-CDMA; bandwidth allocation; power control;
D O I：
10.1109/VETECF.2003.1285355
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a subcarrier and power allocation (SPA) scheme to reduce the multi-access interference (MAI) in multirate MC-CDMA systems. Assuming complete knowledge of the channel, SPA algorithm is developed to enhance the power efficiency and bit error rate (BER). In SPA, the entire bandwidth is divided into nonoverlapping sets each having equal number of subcarriers. Each user's data is spread over one or more sets of subarriers based on the corresponding channel response, so that SPA transmits a user's data only over those subcarriers that perform well for the user during a given transmission period. Simulation results show that SPA leads MC-CDMA to have better bit error rates and power efficiency.
引用
收藏
页码：1900 / 1902
页数：3
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