摘要
针对宽带卫星通信系统中高功率放大器的记忆非线性失真问题，对不同补偿技术进行了综述，重点研究了预失真的学习结构、数据预失真、信号预失真、时频域预失真和自适应均衡等补偿技术并对它们进行了相应的优缺点比较，最后提出了宽带卫星功放实际应用环境下的4种补偿方案，为我国宽带卫星功放失真补偿研究提供理论参考。
As the high power amplifiers（HPA） suffer from memory nonlinear distortion in wideband satellite communication system, which downgrades its performance drastically, different nonlinear distortion compensation techniques are reviewed in this paper. Pre-distortion learning architecture, data pre-distortion, signal pre-distortion, time and frequency domain pre-distortion and adaptive equalization are focused, at the same time, advantages ＆ disadvantages and applications of these techniques are compared and analyzed. Finally, four compensation schemes in practical applications of wideband satellite amplifiers are proposed to provide a theoretical reference for China＇s high-speed satellite amplifier distortion compensation research.
出处
《电讯技术》
北大核心
2013年第2期225-234,共10页
Telecommunication Engineering
基金
基金项目：国防预研基金资助项目（9140A22031010JB3801）
关键词
宽带卫星通信
功率放大器
非线性失真
数字预失真
补偿方案
wideband satellite communication
power amplifier
nonlinear distortion
digital pre-distortion
compensation scheme
