Implementation of PAPR Reduction in OFDM System Based on Clipping Technique with EVM

摘要：

　　The resistance to peak-to-average power ratio (PAPR) for orthogonal frequency division multiplexing (OFDM) communication system is analyzed and implemented on the basis of clipping technique.As two main quality criteria,error vector magnitude (EVM) and out-of-band power spectrum density (PSD) attenuation are adopted to check up the performance of clipping operation.For an OFDM system with 2MHz bandwidth and 340MHz center frequency,we calculate and compare PAPR reduction in the cases of different peak power clipping thresholds,where the average power of OFDM symbols is normalized to 0dB.The simulation results show that the peak power clipping threshold in the range of 6-8dB is suitable for the special OFDM system.In that case,the EVM is less than 3.5% and PSD attenuation curve approaches that without clipping operation.

关键词： error vector magnitude peak-to-average power ratio OFDMsystem clipping technique

作者: Guixin Xuan Xiaoguang Yang Youhua Zhao Ke Wang Fanxin Zeng

作者单位: Chongqing Communication Institute, Chongqing, China Chongqing Communication Institute, Chongqing, China;College of Communication Engineering, Chongqing

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 117-122

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）