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Article: On the design of MIMO block-fading channels with feedback-link capacity constraint

TitleOn the design of MIMO block-fading channels with feedback-link capacity constraint
Authors
KeywordsCommunication theory with partial feedback
multiple-input/multiple-output (MIMO) link with partial feedback
Issue Date2004
PublisherIEEE.
Citation
IEEE Transactions on Communications, 2004, v. 52 n. 1, p. 62-70 How to Cite?
AbstractIn this paper, we propose a combined adaptive power control and beamforming framework for optimizing multiple-input/multiple-output (MIMO) link capacity in the presence of feedback-link capacity constraint. The feedback channel is used to carry channel state information only. It is assumed to be noiseless and causal with a feedback capacity constraint in terms of maximum number of feedback bits per fading block. We show that the hybrid design could achieve the optimal MIMO link capacity, and we derive a computationally efficient algorithm to search for the optimal design under a specific average power constraint. Finally, we shall illustrate that a minimum mean-square error spatial processor with a successive interference canceller at the receiver could be used to realize the optimal capacity. We found that feedback effectively enhances the forward channel capacity for all signal-to-noise ratio (SNR) values when the number of transmit antennas (n/sub T/) is larger than the number of receive antennas (n/sub R/). The SNR gain with feedback is contributed by focusing transmission power on active eigenchannel and temporal power waterfilling . The former factor contributed, at most, 10log/sub 10/(n/sub T//n/sub R/) dB SNR gain when n/sub T/>n/sub R/, while the latter factor's SNR gain is significant only for low SNR values.
Persistent Identifierhttp://hdl.handle.net/10722/44768
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 1.659
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLau, Ven_HK
dc.contributor.authorLiu, YJen_HK
dc.contributor.authorChen, TAen_HK
dc.date.accessioned2007-10-30T06:09:48Z-
dc.date.available2007-10-30T06:09:48Z-
dc.date.issued2004en_HK
dc.identifier.citationIEEE Transactions on Communications, 2004, v. 52 n. 1, p. 62-70en_HK
dc.identifier.issn0090-6778en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44768-
dc.description.abstractIn this paper, we propose a combined adaptive power control and beamforming framework for optimizing multiple-input/multiple-output (MIMO) link capacity in the presence of feedback-link capacity constraint. The feedback channel is used to carry channel state information only. It is assumed to be noiseless and causal with a feedback capacity constraint in terms of maximum number of feedback bits per fading block. We show that the hybrid design could achieve the optimal MIMO link capacity, and we derive a computationally efficient algorithm to search for the optimal design under a specific average power constraint. Finally, we shall illustrate that a minimum mean-square error spatial processor with a successive interference canceller at the receiver could be used to realize the optimal capacity. We found that feedback effectively enhances the forward channel capacity for all signal-to-noise ratio (SNR) values when the number of transmit antennas (n/sub T/) is larger than the number of receive antennas (n/sub R/). The SNR gain with feedback is contributed by focusing transmission power on active eigenchannel and temporal power waterfilling . The former factor contributed, at most, 10log/sub 10/(n/sub T//n/sub R/) dB SNR gain when n/sub T/>n/sub R/, while the latter factor's SNR gain is significant only for low SNR values.en_HK
dc.format.extent591237 bytes-
dc.format.extent13529 bytes-
dc.format.extent3461 bytes-
dc.format.extent4989 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectCommunication theory with partial feedbacken_HK
dc.subjectmultiple-input/multiple-output (MIMO) link with partial feedbacken_HK
dc.titleOn the design of MIMO block-fading channels with feedback-link capacity constrainten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0090-6778&volume=52&issue=1&spage=62&epage=70&date=2004&atitle=On+the+design+of+MIMO+block-fading+channels+with+feedback-link+capacity+constrainten_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TCOMM.2003.822171en_HK
dc.identifier.scopuseid_2-s2.0-1342308028-
dc.identifier.isiWOS:000188807000012-

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