Title :
Baseband digital image-suppression in low-IF receivers by complex-valued ICA
Author :
Yang, Tianyu ; Mikhael, Wasfy B.
Author_Institution :
Dept. of Electr. Eng., Central Florida Univ., Orlando, FL, USA
Abstract :
A digital baseband image rejection technique for low-IF wireless receivers is presented. It is based on complex-valued Independent Component Analysis (ICA), where non-Gaussianity is measured by kurtosis. Computer simulations demonstrate that the proposed technique is able to substantially improve the receiver´s performance, and the resulting receiver is robust to I/Q mismatch levels, thermal noise, and input signal to interference ratios.
Keywords :
digital signals; independent component analysis; radio access networks; radio receivers; signal processing; telecommunication computing; thermal noise; complex valued independent component analysis; digital image suppression; inphase-quadrature phase mismatch level; kurtosis; radio receiver; signal to noise ratio; telecommunication computer simulation; thermal noise; wireless receiver; Baseband; Computer simulation; Convergence; Covariance matrix; Digital images; Independent component analysis; Local oscillators; Matrix decomposition; Signal processing; Timing; I/Q mismatch; ICA; Image Rejection;
Conference_Titel :
Circuits and Systems, 2003 IEEE 46th Midwest Symposium on
Print_ISBN :
0-7803-8294-3
DOI :
10.1109/MWSCAS.2003.1562530
