Nonlinearity Analysis of RF Power AmplifiedTD-SCDMA signals
In a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, one of the critical components is the RF power amplifier. However, RF power amplifiers are perfectly linear. This is one of the main concerns in an RF power amplifier design. The nonlinearity control is described by the out-of-band power emission levels, and the nonlinearity of an RF power amplifier is described by the third-order intercept point (IP3). However, theres need of clear relationship or expression between out-of-band power emission level and IP3 for TD-SCDMA system, which helps RF designer to choose components. This paper presents the analysis of the nonlinear effect of an RF amplifier in TD-SCDMA system, and derivation of the expressions for the estimated out-of-band emission levels for TD-SCDMA signal in terms of the IP3, and the power level of the signal. The result will be helpful for RF engineers in the design and test of RF power amplifier in TD-SCDMA system.
TD-SCDMA PSD RF power amplifier spectrum regrowth nonlinear distortion
Xiao Li Heng Xiao Chunming Liu Fu Li
Department of Electrical and Computer Engineering, Portland State University, Portland, OR 97207-0751, USA
国际会议
2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)
北京
英文
1636-1641
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）