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On the capacity of a multiple-antenna communication link with channel side information
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0002-7926-5081
KTH, Superseded Departments, Signals, Sensors and Systems.
2003 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 21, no 3, 395-405 p.Article in journal (Refereed) Published
Abstract [en]

We investigate the capacity of a system with multiple transmit and receive antennas, assuming that the transmitter and receiver both have access to (possibly defective) channel-state information. Two different special cases of a general system are studied in detail. Our main results are capacity expressions for these cases and a general conclusion that the encoder can be split into separate space-time coding and direction weighting or beamforming, without capacity loss. We also present numerical results illustrating the dependence of capacity on the parameters of a quantization scheme providing channel-state information to the transmitter from the receiver. These results have high practical value since the assumptions behind them are closely related to the ones of the closed-loop mode in the UMTS/WCDMA standard.

Place, publisher, year, edition, pages
IEEE Communications Society , 2003. Vol. 21, no 3, 395-405 p.
Keyword [en]
channel capacity, channel coding, multiple-input-multiple-output (MIMO) systems, multiple antennas, space-time coding, wireless communications, block-fading channels, wireless communication, time, performance, feedback, codes
National Category
URN: urn:nbn:se:kth:diva-22393DOI: 10.1109/jsac.2003.809696ISI: 000182032200011OAI: diva2:341091
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-12-14Bibliographically approved

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