一种减小OFDM信号峰均功率比的Coded-SLM算法  

A coded-SLM algorithm for reducing OFDM signal PAPR

作　　者：俞兴明[1] 李寰 

机构地区：[1]苏州职业大学电子信息工程系,江苏苏州215104 [2]吴江市胜信光电科技有限公司,江苏吴江215200

出　　处：《光通信研究》2011年第2期8-10,56,共4页Study on Optical Communications

基　　金：苏州职业大学科研基金资助项目(SZD09L27)

摘　　要：针对减小正交频分复用(OFDM)系统峰均功率比(PAPR)的常规选择性映射(SLM)法不仅运算量大,而且需要传送代表相位序列的边信息,因而降低了有效的传输效率的问题,提出了一种基于线性分组码的Coded-SLM算法。理论分析和计算机仿真都表明,该方法与常规SLM法相比虽然在降低PAPR方面稍微逊色,但与原始OFDM相比能有效地降低OFDM信号的PAPR,而且传输效率和可靠性大为提高。As large amount of computations are not only needed when the conventional Selected Mapping（SLM） technique is used for reducing OFDM system PAPR,but also the effective transmission efficiency is reduced because it is necessary to transmit the side information representing the phase sequence,we propose a linear block code-based coded-SLM algorithm both theoretical analysis and computer simulations show that although slightly poorer in reducing PAPR than the conventional SLM method,this algorithm can reduce the OFDM signal PAPR more effectively than the original OFDM technique and the transmission efficiency and reliability are also significantly improved.

关 键 词：正交频分复用 峰均功率比 编码选择性映射 互补累积分布函数 

分 类 号：TN914[电子电信—通信与信息系统]