高技术通讯2011，Vol.21Issue(9)：910-915,6.DOI:10.3772/j.issn.1002-0470.2011.09.005
认知OFDM系统的一种公平有效的多用户资源分配方案
Fair and efficient radio resource allocation in multiuser OFDM-based cognitive radio networks
摘要
Abstract
The paper presents a fair and efficient radio resource allocation scheme for multiuser OFDM-based cognitive radio systems, constrained by available subcarriers, interference temperature, secondary power budget, fairness, etc. The scheme adopts two steps to greatly reduce its computation complexity. The first step is to use a proportionally fair algorithm for subcarrier allocation to meet each users communication needs, and the second one is to use an improved efficient iterative water-filling algorithm and the proposed algorithm for fast power allocation to maximize the sum capacity. The extensive simulation results and the complexity analysis show that the proposed scheme offers a beneficial fairness-versus-capacity tradeoff compared to the existing solution, while significantly reducing the computation complexity.关键词
认知无线电/正交频分复用(OFDM)/无线资源分配/有效性/公平性Key words
cognitive radio/orthogonal frequency division multiplexing ( OFDM) /radio resource allocation/efficiency/fairness引用本文复制引用
毛旭,纪红..认知OFDM系统的一种公平有效的多用户资源分配方案[J].高技术通讯,2011,21(9):910-915,6.基金项目
863计划(2007AA01Z221,2009AA01Z246)和国家自然科学基金(60672124,60832009)资助项目. （2007AA01Z221,2009AA01Z246）
