HP A linearization technique of cascading PAPR reduction and predistortion
The inherent high peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems is extremely sensitive to nonlinear distortion, and significantly reduces the efficiency of high power amplifier (HPA). To resolve this problem, a combined predistortion and PAPR reduction scheme is proposed in this paper. The predistorter can no longer compensate HPAs nonlinearity when input signals magnitude exceeds the linear region. In such circumstance, PAPR reduction technique preventing signals from falling into saturated region is valuable. Based on Rapp model, simulation results and theoretical analysis show that the cascade of predistortion and PAPR reduction technique results in a larger shoulder level and enhancement of power efficiency.
OFDM HPA linearization predistortion PAPR reduction
Xueping Li Peng Zhang Lanxiang Jiang
School of Information Engineering Communication university of China Beijing, China
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
2849-2852
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）