Title :
A space-time RAKE receiver for asynchronous DS/CDMA system based on smart antenna
Author :
Xu, B. ; Vu, T.B. ; Mehrpour, H.
Author_Institution :
Sch. of Electr. Eng., New South Wales Univ., Kensington, NSW, Australia
Abstract :
A space-time RAKE receiver employing a sliding-window LMS (SWLMS) algorithm is proposed. It is shown that this receiver is not only able to combat multipath fading, but is also near-far resistant. In addition, the proposed receiver is applicable to a CDMA system with either periodic or aperiodic signature codes. In comparison with the normalized LMS (NLMS) and Wiener solution, the performance of the proposed receiver is investigated by theoretical analysis and computer simulations
Keywords :
adaptive antenna arrays; adaptive filters; adaptive signal processing; array signal processing; code division multiple access; direction-of-arrival estimation; fading channels; filtering theory; interference suppression; least mean squares methods; multipath channels; multiuser channels; radio receivers; radiofrequency interference; spread spectrum communication; DOA; Wiener solution; adaptive algorithms; aperiodic signature code; asynchronous DS/CDMA system; computer simulations; multipath fading; multiple access interference suppression; near-far resistant receiver; normalized LMS; periodic signature code; receiver performance; sliding-window LMS algorithm; smart antenna; space-time RAKE receiver; transversal filter; Computer simulation; Delay; Fading; Least squares approximation; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Receiving antennas; Vectors;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778443
