A Performance Controllable PA linearization Scheme of Joint PAPR Reduction and Predistortion

摘要：

　　In this paper,we propose an optimization scheme combining peak to average power ratio (PAPR) reduction and predistortion to compensate for the nonlinear distortion from the nonlinear amplifier in orthogonal frequency-division multiplexing (OFDM) communication systems.Specifically,we extend the linear range of power amplifier (PA) by predistortion and reduce the PAPR of OFDM signals by constrained clipping,which prevents signals from falling into saturated region of PA.Error vector magnitude (EVM) is used to evaluate our schemes performance and the value is controllable.Based on Rapp model,simulation results show that the proposed method can achieve the expected performance with 3dB reduction of PAPR,EVM controlled below 0.02,and 5dB reduction of bandwidth expansion.

关键词： orthogonal frequency division multiplexing (OFDM) peake-to-erage power ratio(PAPR) power amplifler(PA) error vector magnitude(EVM)

作者: Gang Tong Qiang Wang Guixin Wang

作者单位: Wireless Technology Innovation Institute,Beijing University of Posts and Telecommunications,Beijing, China

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: 1269-1273

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）