ALGORITHM AND SIMULATION OF FORWARD-LINK CDMA SIGNAL SPECTRAL REGROWTH

被引：0

作者：

Lin Maoliu ^{[1
]}

Xi Qinghua ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Informat Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

2006 IEEE 64TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2006年

关键词：

Spectral Regrowth; CDMA; Power Spectrum Density; Auto-relation Function; High-order cumulant;

D O I：

暂无

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：

Closed-form expressions for the spectral regrowth of code division multiple access (CDMA) signal passing through a nonlinear amplifier with a digitally modulated carrier are derived using the power series and statistical methods of high-order cumulant. The technique yields an analytical expression for the autocorrelation function of the output signal as a function of the statistics of the input signal transformed by a behavioral model of the amplifier. The third-order nonlinearity is expressed in terms of IP3 to include the memory effects of the circuit in-band and out-of-band reactance. The analysis is based on a time-domain model of the signal and the model is used to derive the power spectrum density and other statistical properties of the CDMA signal. Such analytical results are useful in finding optimal operating conditions of the power Amplifier.

引用

页码：887 / 891

页数：5

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