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dc.contributor.authorMemarzadeh, Mahsa
Sabharwal, Ashutosh
Aazhang, Behnaam
dc.creatorMemarzadeh, Mahsa
Sabharwal, Ashutosh
Aazhang, Behnaam
dc.date.accessioned 2007-10-31T00:53:01Z
dc.date.available 2007-10-31T00:53:01Z
dc.date.issued 2001-08-20
dc.date.submitted 2001-08-20
dc.identifier.urihttps://hdl.handle.net/1911/20089
dc.description Conference paper
dc.description.abstract In this paper, we study transmission techniques for broadcast channels with a single transmitter and multiple receivers. The transmitter is assumed to be equipped with multiple antennas. Further, each receiver is interested only in part of the transmitted information. Using Gaussian code based information theoretic bounds, we analyze two transmit beamforming techniques. The first technique, zero-forcing beamformer, uses the channel information for all users to send spatially orthogonal signals to different users, i.e., no user receives interference from the other user signals. The second method uses the single-user optimal beamformer with no effort to reduce interference at the receivers. It is shown that the above transmit beamforming techniques are similar to multiuser receivers used in non-orthogonal CDMA systems. In particular, the zero-forcing beamformer is similar to a decorrelating detector and the single-user beamformer is identical to a matched filter. The comparison with CDMA multiuser receivers is strengthened by results on spectral efficiency of proposed beamformers, which follow the behavior of decorrelating and matched-filter receiver.
dc.description.sponsorship Nokia
dc.language.iso eng
dc.subjectDownlink transmission
multiple antennas
beamformers
CDMA receivers
dc.title Broadcast Space-Time Coding
dc.type Conference paper
dc.date.note 2001-09-19
dc.citation.bibtexName inproceedings
dc.date.modified 2003-11-10
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)
dc.subject.keywordDownlink transmission
multiple antennas
beamformers
CDMA receivers
dc.citation.location Denver, CO
dc.citation.conferenceName SPIE International Conference on Optical Science, Engineering, and Instrumentation
dc.type.dcmi Text
dc.type.dcmi Text
dc.identifier.citation M. Memarzadeh, A. Sabharwal and B. Aazhang, "Broadcast Space-Time Coding," 2001.


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    Publications by Rice University Electrical and Computer Engineering faculty and graduate students

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