应用于SC-FDMA系统PAPR抑制技术的联合算法研究  

A Joint Algorithm for PAPR Reduction Technology in SC-FDMA System

作　　者：吴虹[1] 陈乐[1] 向坤[1] 林鹏[1] 赵迎新[1] 李子彧[1] 田旭生[1] 焦鹏[1] 

机构地区：[1]南开大学电子信息与光学工程学院,天津市信息光子材料与技术重点实验室,天津300071

出　　处：《南开大学学报（自然科学版）》2014年第5期79-85,共7页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：高等学校博士学科点专项科研基金(20110031110028);天津市应用基础与前沿技术研究计划项目(13JCZDJC26000;13JCQNJC01000)

摘　　要：针对SC-FDMA系统在多用户的情况下依然存在较高峰均比问题,提出了改进的μ律压扩和LCCIP-PTS方法的联合方案.仿真结果表明,在SC-FDMA系统中,μ律压扩方法在降PAPR性能和BER性能之间获得了很好的权衡,改进的μ律压扩方法提高了BER性能,同时计算量降低.LCC-IP-PTS方法与C-IP-PTS相比降低了3/4以上的计算复杂度,同时降PAPR性能几乎不变.两者结合能够使SC-FDMA系统PAPR降到5.8dB以下.High PAPR problems in SC-FDMA systems would increase the complexity of power amplifiers.A joint algorithm with a modifiedμ-companding and a LCC-IP-PTS scheme was proposed.Simulation results shows that theμ-companding method gets a good balance between the PAPRand BER performance.The modifiedμ-companding method improves the BER performance as well as lowers the computing.Compared to the CIP-PTS,the LCC-IP-PTS scheme reduces more than three quarters of the computational complexity with almost the similar PAPR performance.The SC-FDMA system with the both methods would have good PAPRperformance which is lower than 5.8dB.

关 键 词：单载波频分复用 峰均比 压扩变换 部分传输序列 

分 类 号：TN929[电子电信—通信与信息系统]