东南大学学报（英文版）2008，Vol.24Issue(4)：402-406,5.
下行多用户MC-CDMA系统中的自适应资源分配
Adaptive resource allocation in downlink multi-user MC-CDMA systems
摘要
Abstract
The joint channel and power allocation in the downlink transmission of multi-user multi-carrier code division multiple access(MC-CDMA) systems are investigated and the throughput maximization problem is considered as a mixed integer optimization problem. For simplicity of analysis, the problem is divided into two less complex sub-problems: power allocation and channel allocation, which can be solved by a suboptimal adaptive power allocation (APA)algorithm and an optimal adaptive channel allocation (ACA) algorithm, respectively. By combining APA and ACA algorithms, an adaptive channel and power allocation scheme is proposed. The numerical results show that the proposed APA algorithm is more suitable for MC-CDMA systems than the conventional equal power allocation algorithm, and that the proposed channel and power allocation scheme can significantly improve the system throughput performance.关键词
CDMA/多载波传输/多用户/信道分配/功率分配Key words
code division multiple access (CDMA)/multi-carrier transmission/multi-user/channel allocation/power allocation分类
信息技术与安全科学引用本文复制引用
王俊波,陈明,王江舟..下行多用户MC-CDMA系统中的自适应资源分配[J].东南大学学报（英文版）,2008,24(4):402-406,5.基金项目
Major Project of the National Natural Science Founda-tion of China( No. 60496311 ), the National High Technology Research and Development Program of China( 863 Program) ( No. 2007AA01Z207), the Program for New Century Excellent Talents in University. （ No. 60496311 ）
