Performance and analysis of adaptive modulation in MC-CDMA systems

被引：1
|
作者：
Zeng, GY [1 ]
Zheng, K [1 ]
Huang, L [1 ]
Wang, WB [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Ctr Wireless Commun, Beijing 100876, Peoples R China
来源：
2004 INTERNATIONAL CONFERENCE ON COMMUNICATION, CIRCUITS, AND SYSTEMS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS - VOL 2: SIGNAL PROCESSING, CIRCUITS AND SYSTEMS | 2004年
关键词：
MC-CDMA; adaptive modulation; multi-user interference (MUI);
D O I：
10.1109/ICCCAS.2004.1346024
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
To satisfy the requirement for high data rate and high frequency efficiency in the future mobile radio communication systems, a MC-CDMA system using adaptive modulation is proposed in this paper in order both to achieve frequency diversity effect and to maximize the spectral efficiency in this paper. We also give a practical adaptive modulation algorithm with low computational complexity and small signaling overhead, which is suitable for MC-CDMA downlink transmission. The simulation results show the adaptive MC-CDMA systems outperform conventional MC-CDMA systems. Furthermore, the combining schemes at the receiver in MC-CDMA systems, which affect the efficiency of adaptive modulation algorithm, are also analyzed including the multi-user interference.
引用
收藏
页码：219 / 223
页数：5
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