Analysis and Measurement of Cross Modulation Distortion in WCDMA Receivers

Author

Mohammed, Saif Khan ; Yanduru, Naveen K.

Author_Institution

Wireless Solutions Group, Texas Instrum., Bangalore

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

1508

Lastpage

1511

Abstract

Due to nonlinearity of the front end RF components in a WCDMA receiver, the modulation of the leaked transmitter (TX) signal can get transferred to a blocker, resulting in cross-modulation. If the blocker is close to the desired channel, the cross-modulation spectrum would contaminate the desired channel. Previous published work has analyzed cross-modulation but only for the cases when the leaked TX signal has one or infinite number of physical channels. In this paper, the authors perform more exhaustive analysis, and derive a closed form expression for the distortion as a function of a generic (N) number of channels in the leaked TX signal. This analysis is also supported with measurements on a WCDMA chip

Keywords

code division multiple access; distortion measurement; intermodulation distortion; receivers; WCDMA receivers; cross modulation distortion; distortion measurement; Band pass filters; Distortion measurement; Instruments; Multiaccess communication; Nonlinear distortion; Pollution measurement; RF signals; Radio frequency; Semiconductor device measurement; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342509

Filename

4145690