通信学报2012，Vol.33Issue(6)：150-156,7.
基于子载波加权的峰均比与带外辐射联合降低方法
Joint reduction of peak-to-average power ratio and out-of-band power based on subcarrier weighting in OFDM systems
摘要
Abstract
Considering the conflict of PAPR and OBP reductions in OFDM systems,a new method based on subcarrier weighting was proposed for the joint reduction. The symbols on subcarriers were multiplied by optimal weighting vector to reduce PAPR and OBP jointly,and an improved GA was used to calculate the optimal weighting vector for lower complexity. It was more effective in spectrum utility and did not need any transmission of side information. Furthermore,with trade-off parameter,it offered more flexibility to control the reduction by changing the relative weighting of the two optimization criteria. The simulation results indicate that,compared with a system that performs two separate optimization steps,the proposed method can significantly enhance the amount of PAPR and OBP reduction with lower computation complexity. It is simple to implement,which makes it very practical.关键词
OFDM/联合降低/子载波加权/遗传算法/峰均功率比/带外辐射功率Key words
OFDM/joint reduction/subcarrier weighting/genetic algorithm/PAPR/out-of-band power分类
信息技术与安全科学引用本文复制引用
李庆,胡捍英..基于子载波加权的峰均比与带外辐射联合降低方法[J].通信学报,2012,33(6):150-156,7.基金项目
国家科技重大专项资助项目(2009ZX03003-007) （2009ZX03003-007）
