MMSE criteria for downlink beamforming in CDMA wireless systems
2006 (English)In: 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2006, 813-816 p.Conference paper (Refereed)
In wireless systems with multiple antennas at the access points, the downlink power has to be spatially optimized to allow several simultaneous users. We consider two different MMSE criteria for a multi-user downlink CDMA system and determine the optimal transmit beamforming weights. The MMSE criteria with and without receiver gain control are compared for a system where the transmitter is equipped with an antenna array and the receivers have single antennas. The MMSE and SINR versus different number of users is shown and the effect of including the gain control in the MMSE criteria is clearly demonstrated.
Place, publisher, year, edition, pages
2006. 813-816 p.
, International Conference on Acoustics Speech and Signal Processing (ICASSP), ISSN 1520-6149
CDMA wireless systems, MMSE criteria, SINR, antenna array, code division multiple access, downlink beamforming, minimum mean square error, multi-user downlink CDMA system, multiple antennas, signal-to-interference plus noise ratio, single antennas, transmit beamforming weights
IdentifiersURN: urn:nbn:se:kth:diva-34942DOI: 10.1109/ICASSP.2006.1661093ISI: 000245062900204ScopusID: 2-s2.0-33947633372OAI: oai:DiVA.org:kth-34942DiVA: diva2:429614
31st IEEE International Conference on Acoustics, Speech and Signal Processing Toulouse, FRANCE, MAY 14-19, 2006
QC 201107042011-07-052011-06-172012-01-23Bibliographically approved