| 基于星座恢复法降低PAPR的性能分析 |
| |
| 引用本文： | 苏雁泳,徐媛媛,赵晓丹.基于星座恢复法降低PAPR的性能分析[J].南京航空航天大学学报,2011,43(2). |
| |
| 作者姓名： | 苏雁泳 徐媛媛 赵晓丹 |
| |
| 作者单位： | 哈尔滨工业大学通信工程系 哈尔滨 150001 |
| |
| 基金项目： | 国家重点基础研究发展计划(“九七三”计划)(2007CB310606)资助项目 |
| |
| 摘 要： | 提出了一种新的降低峰均功率比(Peak-to-average ratio,PAPR)的方法——星座恢复法.在发送端采用软件削波限幅的方法来降低系统的峰均比,其系统结构简单、且可根据系统的要求灵活地改变PAPR值；在接收端根据调制信号的星座特性恢复出被限幅数据的实际值,从而减小了信号的畸变,提高了系统的误码性能.为了使星座恢复法更具实用性,对其算法进行了简化,从而大大地减少了系统的运算量.理论分析和仿真结果表明:与选择性映射法(Selective mapping,SLM)相比,基于星座恢复法的正交频分复用(Orthogonal frequency division multiplexing,OFDM)系统,其误码性能得到了明显的改善,算法较简单,且无需额外信道来传送附加信息.
|
| 关 键 词： | 正交频分复用 峰均功率比 星座恢复 互补累积分布函数 |
Performance Analysis for Reducing PAPR Based on Constellation Restoration |
| |
| Su Yanyong
,
Xu Yuanyuan
,
Zhao Xiaodan.Performance Analysis for Reducing PAPR Based on Constellation Restoration[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(2). |
| |
| Authors: | Su Yanyong Xu Yuanyuan Zhao Xiaodan |
| |
| Institution: | Su Yanyong,Xu Yuanyuan,Zhao Xiaodan(Department of Communication Engineering,Harbin Institute of Technology,Harbin,150001,China) |
| |
| Abstract: | A new method of reducing peak-to-average ratio(PAPR) based on constellation restoration is presented.In the transmitter,the method of soft clipping is used to reduce the PAPR of orthogonal frequency division multiplexing system.The system structure is simple,and the PAPR value can be changed according to the requirement of the system.In the receiver,the actual value of the clipped data is recovered according to the constellation characteristics of modulated signal.Thus,the signal distortion is weakened,and ... |
| |
| Keywords: | orthogonal frequency division multiplexing(OFDM) peak-to-average power ratio(PAPR) constellation restoration complementary cumulative distribution function |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
