摘要
为了解决基于小波的正交频分复用(WOFDM)系统中较高的峰均功率比(PAPR)问题,提出了一个基于线性规划的PAPR优化方案.在小波滤波器组级数固定的条件下,设计线性规划优化模型,选择最优小波包基,利用最优小波包基调制信号使系统获得最优PAPR.分析和仿真实验结果表明,新算法在确保系统误码率的同时,可以明显抑制系统的PAPR.
To solve the high peak-to-average power ratio （PAPR） problem of wavelet-based orthogonal frequency division multiplexing （WOFDM） , an optimizing PAPR algorithm based on linear programming is proposed. On conditional that the number of the wavelet filter banks level is fixed, the best wavelet packer basis is chosen by constructing the linear programming model and the optimal PAPR of the system can be obtained by utilizing the best wavelet packer basis to modulate signals. The analysis and simulations show the bit error rate performance of the system can be ensured, at the same time, the PAPR of the system can be mitigated by implementing the algorithm.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2011年第4期127-130,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(60602035
61071103)
中国科学院遥感应用研究所
北京师范大学遥感科学国家重点实验室开放基金资助项目(OFSLRSS201001)
关键词
峰均功率比
正交频分复用
小波变换
线性规划
peak-to-average power ratio
orthogonal frequency division multiplexing
wavelet transform
linear programming
