Title :
Kalman-filter based chip estimator for WCDMA downlink detection
Author :
Werner, S. ; de Campos, M.L.R. ; Apolinario, J.A.
Author_Institution :
Signal Process. Lab., Helsinki Univ. of Technol., Helsinki, Finland
Abstract :
In the WCDMA downlink, the multipath channel destroys orthogonality between users and causes multiple access interference (MAI). This channel-induced MAI can be combated by channel equalization to approximately restore orthogonality. This paper presents a chip-estimator method based on Kalman filtering suitable for WCDMA downlink. The method does not require a training sequence or the knowledge of other-users´ spreading codes. Simulation results show considerable performance improvement using the proposed estimator compared with that of the RAKE receiver.
Keywords :
Kalman filters; channel estimation; code division multiple access; multipath channels; radio receivers; radiofrequency interference; signal detection; Kalman-filter based chip estimator; RAKE receiver; WCDMA downlink detection; channel equalization; channel-induced MAI; multipath channel; multiple access interference; Bit error rate; Kalman filters; Signal to noise ratio;
Conference_Titel :
Signal Processing Conference, 2000 10th European
Print_ISBN :
978-952-1504-43-3
