Adaptive Resource Allocation in Multi-user OFDM-Based Cognitive Radio Systems

被引：0
|
作者：
Ding, Guoru [1 ]
Wu, Qihui [1 ]
Min, Neng [1 ]
Zhou, Guangsu [1 ]
机构：
[1] PLA Univ Sci & Tech, Inst Commun Engn, Nanjing 210007, Peoples R China
来源：
2009 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP 2009) | 2009年
关键词：
Cognitive Radio; OFDM; resource allocation; imperfect spectrum detection; mutual interference;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Cognitive Radio (CR) is a promising concept for improving the utilization of scarce radio spectrum resource. OFDM is considered as a well-matched technology for CR systems. Resource allocation is a vital task in such systems. In this paper, we model the problem of subcarrier, bit and power allocation for multi-user OFDM-based CR systems with imperfect spectrum detection and mutual interference consideration. Based on this model, we propose three similar resource allocation schemes which aim at: maximizing the throughput of CR system in a greedy approach. Numerical results show the effectiveness of our proposed schemes.
引用
收藏
页码：1501 / 1505
页数：5
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