On the capacity of multiaccess fading channels with full channel state information at low power regime

Handle URI:
http://hdl.handle.net/10754/564726
Title:
On the capacity of multiaccess fading channels with full channel state information at low power regime
Authors:
Rezki, Zouheir; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
We study the throughput capacity region of the Gaussian multiaccess (MAC) fading channel with perfect channel state information (CSI) at the receiver (CSI-R) and at the transmitters (CSI-T), at low power regime. We show that it has a multidimensional rectangle structure and thus is simply characterized by single user capacity points. More specifically, we show that at low power regime, the boundary surface of the capacity region shrinks to a single point corresponding to the sum rate maximizer and that the coordinates of this point coincide with single user capacity bounds. Inspired from this result, we propose an on-off scheme, compute its achievable rate, and provide a necessary condition on the fading channels under which this scheme achieves single user capacity bounds of the MAC channel at asymptotically low power regime. We argue that this necessary condition characterizes a class of fading that encompasses all known wireless channels, where the capacity region of the MAC channel has a simple expression in terms of users' average power constraints only. © 2013 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2013 IEEE International Conference on Communications (ICC)
Conference/Event name:
2013 IEEE International Conference on Communications, ICC 2013
Issue Date:
Jun-2013
DOI:
10.1109/ICC.2013.6655045
Type:
Conference Paper
ISSN:
15503607
ISBN:
9781467331227
Appears in Collections:
Conference Papers; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRezki, Zouheiren
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T07:13:54Zen
dc.date.available2015-08-04T07:13:54Zen
dc.date.issued2013-06en
dc.identifier.isbn9781467331227en
dc.identifier.issn15503607en
dc.identifier.doi10.1109/ICC.2013.6655045en
dc.identifier.urihttp://hdl.handle.net/10754/564726en
dc.description.abstractWe study the throughput capacity region of the Gaussian multiaccess (MAC) fading channel with perfect channel state information (CSI) at the receiver (CSI-R) and at the transmitters (CSI-T), at low power regime. We show that it has a multidimensional rectangle structure and thus is simply characterized by single user capacity points. More specifically, we show that at low power regime, the boundary surface of the capacity region shrinks to a single point corresponding to the sum rate maximizer and that the coordinates of this point coincide with single user capacity bounds. Inspired from this result, we propose an on-off scheme, compute its achievable rate, and provide a necessary condition on the fading channels under which this scheme achieves single user capacity bounds of the MAC channel at asymptotically low power regime. We argue that this necessary condition characterizes a class of fading that encompasses all known wireless channels, where the capacity region of the MAC channel has a simple expression in terms of users' average power constraints only. © 2013 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectcapacity regionen
dc.subjectergodic capacityen
dc.subjectfading channelen
dc.subjectlow poweren
dc.subjectlow-SNRen
dc.subjectMACen
dc.subjecton-off signalingen
dc.titleOn the capacity of multiaccess fading channels with full channel state information at low power regimeen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2013 IEEE International Conference on Communications (ICC)en
dc.conference.date9 June 2013 through 13 June 2013en
dc.conference.name2013 IEEE International Conference on Communications, ICC 2013en
dc.conference.locationBudapesten
kaust.authorRezki, Zouheiren
kaust.authorAlouini, Mohamed-Slimen
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