Title :
A low complexity receiver for space-time coded CDMA systems
Author :
Sud, Seema ; Goldstein, J.Scott
Author_Institution :
Science Applications International Corporation, 4001 Fairfax Dr., Suite 675 Arlington, VA 22203-1303, USA
Abstract :
A novel receiver for space-time coded systems based on the reduced rank multistage Wiener filter (MWF) is presented. It is shown that this receiver has a complexity that is only a linear function of the processing gain (N), the number of transmit antennas (Lt), and the rank (D) of the MWF. The complexity of the equivalent MMSE solution is a function of (N Lt)3. It is also demonstrated by numerical simulation that this receiver meets MMSE performance at a significantly lower rank. The MMSE implementation is derived and performance is evaluated for highly loaded synchronous CDMA systems in flat fading.
Keywords :
Artificial neural networks; Variable speed drives;
Conference_Titel :
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.2002.5745129
