湖南大学学报（自然科学版）2016，Vol.43Issue(2)：124-129,6.
一种改进的喷泉多选择序列峰均比降低算法
An Improved Fountain Multi-choice Sequence Algorithm for Peak-to-Average Power Ratio Reduction
摘要
Abstract
Non-continuous orthogonal frequency division multiplexing (NC OFDM)has large sidelobe power and high peak-to-average power ratio (PAPR).In this paper,an improved algorithm with Fountain coding was proposed,in which the sidelobe interference in NC-OFDM system and high peak to average ra-tio were both taken into consideration in the joint optimization algorithm under the circumstance of cogni-tive radio system.Fountain multi-choice sequence algorithm,by the ideal of Fountain coding and sequence mapping,was adopted for sidelobe suppression and PAPR reduction.The simulation results show that the improved algorithm can significantly reduce the band interference to licensed user (LUs)and make the sys-tem PAPR less than target PAPR,so as to solve the problem of NC OFDM signal distortion caused by power amplifier and eventually enhance the performance of the bit error rate effectively.关键词
正交频分复用/认知无线电/边带功率/喷泉多选择序列/峰均比/误比特率Key words
orthogonal frequency division multiplexing/cognitive radio/sidelobe power/fountain multi-choice sequence/PAPR/bit error rate分类
信息技术与安全科学引用本文复制引用
朱文杰,易本顺..一种改进的喷泉多选择序列峰均比降低算法[J].湖南大学学报（自然科学版）,2016,43(2):124-129,6.基金项目
国家自然科学基金资助项目（61371125），National Natural Science Foundation of China （）
