计算机技术与发展Issue(1)：79-82,86,5.DOI:10.3969/j.issn.1673-629X.2013.01.020
认知 OFDM 系统中一种改进的注水功率分配算法
An Improved Algorithm Based on Water-filling Power Allocation in Cognitive OFDM System
摘要
Abstract
In cognitive environment,with the premise of not interfering authorized users,cognitive users can also share spectrum and trans-mit data with authorized users,make the system transmission rate and band utilization maximized. It proposes an improved algorithm based on water-filling method in cognitive OFDM system. The interference constraint is fully taken into consideration,combined with the noise value of each channel,choose the channels correctly which need power by reasonably sorting the whole channels and optimize the power allocation. The simulation also proves the novel method can make the best use of channels and improve the transmitting rate,and the data is correct.关键词
认知 OFDM/注水算法/功率分配Key words
cognitive OFDM/water-filling algorithm/power allocation分类
信息技术与安全科学引用本文复制引用
王业胜,季薇,侯晓赟..认知 OFDM 系统中一种改进的注水功率分配算法[J].计算机技术与发展,2013,(1):79-82,86,5.基金项目
江苏省高校优势学科建设工程资助项目--“信息与通信工程” （）
南京邮电大学引进人才项目(NY209003) （NY209003）
