Title :
A linear CDMA detector based on minimum variance distortionless response (MVDR)
Author_Institution :
Sch. of Commun. & Inf., Victoria Univ. of Technol., Melbourne, Vic., Australia
Abstract :
A bit-level processing (BLP) based linear CDMA detector is derived following the principle of minimum variance distortionless response (MVDR). The combining taps for the MVDR detector are determined from (1) the covariance matrix of the matched filter output, and (2) the corresponding row (or column) of the user correlation matrix. Due to the interference suppression capability of MVDR and the fact that no inversion of the user correlation matrix is involved, the influence of the synchronisation errors is greatly reduced. The detector performance is demonstrated via computer simulations (both synchronisation errors and intercell interference are considered)
Keywords :
cellular radio; code division multiple access; covariance matrices; filtering theory; interference suppression; matched filters; multiuser channels; radiofrequency interference; signal detection; synchronisation; MVDR detector; bit-level processing; combining taps; computer simulations; covariance matrix; detector performance; intercell interference; interference suppression; linear CDMA detector; matched filter output; minimum variance distortionless response; synchronisation errors; user correlation matrix; Computer errors; Convergence; Covariance matrix; Decorrelation; Detectors; Informatics; Interference suppression; Matched filters; Multiaccess communication; Multiple access interference;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851521
