Title :
Image rejection filter based on complex LMS filter for low-IF receivers
Author :
Kirei, Botond Sandor ; Dornean, Irina ; Topa, Marina
Author_Institution :
Basis or Electron. Dept., Tech. Univ. form Cluj-Napoca, Cluj-Napoca
Abstract :
In this paper the low-IF receiver architecture, the image interference due to the IF domain, phenomena also referred as I/Q imbalance and a complex LMS filter for image rejection are presented. A Simulink model was created to check the availability of the LMS filter, its performance measured and compared to the existing implementation. Simulation shows that the image rejection ratio is limited at 32 dB by the LMS filterpsilas learning rate.
Keywords :
filtering theory; radio receivers; Simulink model; complex LMS filter; image interference; image rejection filter; low-IF receiver architecture; Adaptive filters; Band pass filters; Baseband; Demodulation; Interference; Least squares approximation; Parameter estimation; Receivers; Signal processing; Voltage-controlled oscillators; complex LMS filter; image rejection; low-IF receiver;
Conference_Titel :
ELMAR, 2008. 50th International Symposium
Conference_Location :
Zadar
Print_ISBN :
978-1-4244-3364-3
