Adaptive Subcarrier and Power Allocation with Fairness for Multi-user Space-Time Block-Coded OFDM System

被引：3
|
作者：
Xu, Jian [1 ]
Seo, Jong-Soo [1 ]
机构：
[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2010年 / 53卷 / 02期
关键词：
Orthogonal frequency division multiplexing (OFDM); Resource allocation; Space-time block code (STBC); Sum capacity; Water-filling; ADAPTATION; BIT;
D O I：
10.1007/s11277-009-9677-4
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper investigates the subcarrier and power allocation problems of multi-user space-time block coded OFDM based cellular systems. Based on the tradeoff between the number of assigned subcarriers and the amount of allocated power for users, a less complexity algorithm that separates subcarrier allocation and power allocation is proposed. Simulation results show that the proposed resource allocation algorithm can improve the capacity significantly compared with static FDMA fixed allocation algorithm and the MIMO-OFDMA scheme, and the more important thing is that it can make the capacity be distributed more fairly, very close to the ideal rate constraints, among users than the scheme which maximizes the system capacity only.
引用
收藏
页码：163 / 177
页数：15
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