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

页码：1501 / 1505

页数：5

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