The impact of RF front-end characteristics on the spectral regrowth of communications signals
The impact of RF front-end characteristics on the spectral regrowth of communications signals
复制标题
射频前端特性对通信信号频谱再生的影响
DOI：
10.1109/tmtt.2005.848801
复制
发表时间：
2005
影响因子：
4.3
通讯作者：
Michael B. Steer
中科院分区：
文献类型：
--
作者：
K. Gard;Lawrence E. Larson;Michael B. Steer
射频前端的非线性特性会导致数字调制信号的带内失真和频谱再生，且失真取决于信号的统计变化。在本文中，通过对几种具有从软限幅到硬限幅特性的限幅放大器模型应用时间平均自相关分析，探讨了非线性响应与信号的相互作用。通过对一个码分多址放大器的测量和预测邻道功率抑制进行比较，验证了该分析。
The nonlinear characteristic of an RF front-end results in in-band distortion and spectral regrowth of digitally modulated signals with distortion being dependent on the statistical variation of the signal. In this paper, the interaction of the nonlinear response with the signal is explored using a time-averaged autocorrelation analysis applied to several limiter-amplifier models having characteristics ranging from soft-to-hard amplitude limiting. The analysis is verified by comparing measured and predicted adjacent channel power rejection for a code-division multiple-access amplifier.