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Article: Capacity of memoryless channels and block-fading channels with designable cardinality-constrained channel state feedback

TitleCapacity of memoryless channels and block-fading channels with designable cardinality-constrained channel state feedback
Authors
KeywordsChannel capacity
fading channels
partial channel state information at the transmitter (CSIT)
partial feedback
Issue Date2004
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?puNumber=18
Citation
IEEE Transactions on Information Theory, 2004, v. 50 n. 9, p. 2038-2049 How to Cite?
AbstractA coding theorem is proved for memoryless channels when the channel state feedback of finite cardinality can be designed. Channel state information is estimated at the receiver and a function of the estimated channel state is causally fed back to the transmitter. The feedback link is assumed to be noiseless with a finite feedback alphabet, or equivalently, finite feedback rate. It is shown that the capacity can be achieved with a memoryless deterministic feedback and with a memoryless device which select transmitted symbols from a codeword of expanded alphabet according to current feedback. To characterize the capacity, we investigate the optimization of transmission and channel state feedback strategies. The optimization is performed for both channel capacity and error exponents. We show that the design of the optimal feedback scheme is identical to the design of scalar quantizer with modified distortion measures. We illustrate the optimization using Rayleigh block-fading channels. It is shown that the optimal transmission strategy has a general form of temporal water-filling in important cases. Furthermore, while feedback enhances the forward channel capacity more effectively in low-signal-to noise ratio (SNR) region compared with that of high-SNR region, the enhancement in error exponent is significant in both high- and low-SNR regions. This indicates that significant gain due to finite-rate channel state feedback is expected in practical systems in both SNR regions.
Persistent Identifierhttp://hdl.handle.net/10722/44777
ISSN
2015 Impact Factor: 1.737
2015 SCImago Journal Rankings: 1.433
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLau, VKNen_HK
dc.contributor.authorLiu, YJen_HK
dc.contributor.authorChen, TAen_HK
dc.date.accessioned2007-10-30T06:10:00Z-
dc.date.available2007-10-30T06:10:00Z-
dc.date.issued2004en_HK
dc.identifier.citationIEEE Transactions on Information Theory, 2004, v. 50 n. 9, p. 2038-2049en_HK
dc.identifier.issn0018-9448en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44777-
dc.description.abstractA coding theorem is proved for memoryless channels when the channel state feedback of finite cardinality can be designed. Channel state information is estimated at the receiver and a function of the estimated channel state is causally fed back to the transmitter. The feedback link is assumed to be noiseless with a finite feedback alphabet, or equivalently, finite feedback rate. It is shown that the capacity can be achieved with a memoryless deterministic feedback and with a memoryless device which select transmitted symbols from a codeword of expanded alphabet according to current feedback. To characterize the capacity, we investigate the optimization of transmission and channel state feedback strategies. The optimization is performed for both channel capacity and error exponents. We show that the design of the optimal feedback scheme is identical to the design of scalar quantizer with modified distortion measures. We illustrate the optimization using Rayleigh block-fading channels. It is shown that the optimal transmission strategy has a general form of temporal water-filling in important cases. Furthermore, while feedback enhances the forward channel capacity more effectively in low-signal-to noise ratio (SNR) region compared with that of high-SNR region, the enhancement in error exponent is significant in both high- and low-SNR regions. This indicates that significant gain due to finite-rate channel state feedback is expected in practical systems in both SNR regions.en_HK
dc.format.extent445456 bytes-
dc.format.extent13529 bytes-
dc.format.extent2706 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?puNumber=18en_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.subjectChannel capacityen_HK
dc.subjectfading channelsen_HK
dc.subjectpartial channel state information at the transmitter (CSIT)en_HK
dc.subjectpartial feedbacken_HK
dc.titleCapacity of memoryless channels and block-fading channels with designable cardinality-constrained channel state feedbacken_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9448&volume=50&issue=9&spage=2038&epage=2049&date=2004&atitle=Capacity+of+memoryless+channels+and+block-fading+channels+with+designable+cardinality-constrained+channel+state+feedbacken_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TIT.2004.833334en_HK
dc.identifier.scopuseid_2-s2.0-4544383618-
dc.identifier.isiWOS:000223579500013-

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