Title :
Transmit Wiener filter for the downlink of TDDDS-CDMA systems
Author :
Joham, M. ; Kusume, K. ; Gzara, M.H. ; Utschick, W. ; Nossek, J.A.
Author_Institution :
Inst. for Circuit Theor. & Signal Process., Tech. Univ. Munich, Germany
Abstract :
We derive the transmit Wiener filter for DS-CDMA systems which depends upon the noise power at the receivers. We show that the transmit Wiener filter converges to the transmit matched filter and the transmit zero-forcing filter for low and high signal-to-noise-ratio, respectively. Simulation results show the superiority of the transmit Wiener filter compared to the other two transmit filters. Moreover, we observe that the application of the three transmit filters and the respective receive filters lead to similar results.
Keywords :
Wiener filters; matched filters; mobile radio; radio receivers; radio transmitters; spread spectrum communication; time division multiple access; TDDDS-CDMA; convergence; receive filters; receiver noise power; signal-to-noise-ratio; transmit Wiener filter; transmit matched filter; transmit zero-forcing filter; Covariance matrix; Downlink; Equations; Erbium; Large Hadron Collider; Matched filters; Tires; Wiener filter;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1049276
