The impact of RF front-end characteristics on the spectral regrowth of communications signals

被引：48

作者：

Gard, KG ^{[1
]}

Larson, LE

Steer, MB

机构：

[1] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA

[2] Univ Calif San Diego, Dept Elect & Comp Engn, Ctr Wireless Commun, La Jolla, CA 92093 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2005年 / 53卷 / 06期

关键词：

adjacent channel interference; adjacent channel power ratio (ACPR); autocorrelation function; bandpass nonlinearity; behavioral models; cellular radio; code-division multiple-access (CDMA) signal; code division multiple access; complex Gaussian process; correlation; correlation theory; digital radio; digital radio system; digital signals; digitally modulated carrier; Gaussian processes; limiting amplifier; limiting-amplifier model; microwave amplifiers; modulation; nonlinear amplifier; nonlinear distortion; nonlinear transformation; quadrature input signal; RF envelope model; spectral analysis; spectral regrowth; statistical analysis;

D O I：

10.1109/TMTT.2005.848801

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：2179 / 2186

页数：8

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