Title :
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
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;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342509
