电讯技术Issue(2)：183-188,6.DOI:10.3969/j.issn.1001-893x.2014.02.013
考虑整数比特率及公平性的认知无线电OFDMA功率分配算法
An OFDMA Power Allocation Algorithm Considering Integer Bit Rate and Fairness for Cognitive Radio Networks
摘要
Abstract
For orthogonal frequency division multiple access( OFDMA)-based cognitive radio systems, the transmission rate of every cognitive user must be an integer in practice, and the single cognitive user is on-ly considered in previous rate rounding algorithm. According to this situation, a new rate rounding algo-rithm is proposed in this paper, and it is modified based on the previous algorithm. Every subcarrier rate is adjusted once at most, which ensures the fairness at the rate rounding between cognitive users, and the to-tal bit rate is also improved. The simulation result shows that the fairness among cognitive users is im-proved effectively by the proposed algorithm.关键词
认知无线电/正交频分多址/整数比特/公平性Key words
cognitive radio/OFDMA/integer bit/fairness分类
信息技术与安全科学引用本文复制引用
郝万明,杨守义..考虑整数比特率及公平性的认知无线电OFDMA功率分配算法[J].电讯技术,2014,(2):183-188,6.基金项目
国家自然科学基金资助项目(61271421)@@@@ Foundation Item:The National Natural Science Foundation of China (No.61271421) （61271421）
