Broadcast Space-Time Coding

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dc.citation.bibtexNameinproceedingsen_US
dc.citation.conferenceNameSPIE International Conference on Optical Science, Engineering, and Instrumentationen_US
dc.citation.locationDenver, COen_US
dc.contributor.authorMemarzadeh, Mahsaen_US
dc.contributor.authorSabharwal, Ashutoshen_US
dc.contributor.authorAazhang, Behnaamen_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:53:01Z
dc.date.available2007-10-31T00:53:01Z
dc.date.issued2001-08-20
dc.date.modified2003-11-10en_US
dc.date.note2001-09-19en_US
dc.date.submitted2001-08-20en_US
dc.descriptionConference paperen_US
dc.description.abstractIn 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>i.e.</i>, 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.en_US
dc.description.sponsorshipNokiaen_US
dc.identifier.citationM. Memarzadeh, A. Sabharwal and B. Aazhang, "Broadcast Space-Time Coding," 2001.
dc.identifier.urihttps://hdl.handle.net/1911/20089
dc.language.isoeng
dc.subjectDownlink transmission*
dc.subjectmultiple antennas*
dc.subjectbeamformers*
dc.subjectCDMA receivers*
dc.subject.keywordDownlink transmissionen_US
dc.subject.keywordmultiple antennasen_US
dc.subject.keywordbeamformersen_US
dc.subject.keywordCDMA receiversen_US
dc.titleBroadcast Space-Time Codingen_US
dc.typeConference paper
dc.type.dcmiText
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