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Conference Paper: On energy efficient communications over Rayleigh fading channel with delivery rate and delay constraints in wireless sensor networks

TitleOn energy efficient communications over Rayleigh fading channel with delivery rate and delay constraints in wireless sensor networks
Authors
KeywordsCross-Layer Design
Link Adaptation
Rayleigh Fading
Wireless Sensor Networks
Issue Date2007
Citation
Proceedings Of The International Conference On Parallel Processing Workshops, 2007 How to Cite?
AbstractThere is a plethora of recent research on high performance wireless communications using a cross-layer approach in that adaptive modulation and coding (AMC) schemes at wireless physical layer are used for combating time varying channel fading and enhance link throughput. However, in a wireless sensor network, transmitting packets over deep fading channel can incur excessive energy consumption due to the usage of stronger forwarding error code (FEC) or more robust modulation mode. To avoid such energy inefficient transmission, a straightforward approach is to temporarily buffer packets when the channel is in deep fading, until the channel quality recovers. Unfortunately, packet buffering may lead to communication latency and buffer overflow, which, in turn, can result in severe degradation in communication performance. Specifically, to improve the buffering approach, we need to address two challenging issues: (1) how long should we buffer the packets?, and (2) how to choose the optimum channel transmission threshold above which to transmit the buffered packets? In this paper, by using discrete-time queuing model, we analyze the effects of Rayleigh fading over AMC-based communications in a wireless sensor network. We then analytically derive the packet delivery rate and average delay. Guided by these numerical results, we can determine the most energy-efficient operation modes under different transmission environments. Extensive simulation results on NS-2 have validated the analytical results, and indicates that under these modes, we can achieve as much as 40% reduction in energy dissipation. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158529
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorLin, XHen_US
dc.contributor.authorKwok, YKen_US
dc.date.accessioned2012-08-08T09:00:06Z-
dc.date.available2012-08-08T09:00:06Z-
dc.date.issued2007en_US
dc.identifier.citationProceedings Of The International Conference On Parallel Processing Workshops, 2007en_US
dc.identifier.issn1530-2016en_US
dc.identifier.urihttp://hdl.handle.net/10722/158529-
dc.description.abstractThere is a plethora of recent research on high performance wireless communications using a cross-layer approach in that adaptive modulation and coding (AMC) schemes at wireless physical layer are used for combating time varying channel fading and enhance link throughput. However, in a wireless sensor network, transmitting packets over deep fading channel can incur excessive energy consumption due to the usage of stronger forwarding error code (FEC) or more robust modulation mode. To avoid such energy inefficient transmission, a straightforward approach is to temporarily buffer packets when the channel is in deep fading, until the channel quality recovers. Unfortunately, packet buffering may lead to communication latency and buffer overflow, which, in turn, can result in severe degradation in communication performance. Specifically, to improve the buffering approach, we need to address two challenging issues: (1) how long should we buffer the packets?, and (2) how to choose the optimum channel transmission threshold above which to transmit the buffered packets? In this paper, by using discrete-time queuing model, we analyze the effects of Rayleigh fading over AMC-based communications in a wireless sensor network. We then analytically derive the packet delivery rate and average delay. Guided by these numerical results, we can determine the most energy-efficient operation modes under different transmission environments. Extensive simulation results on NS-2 have validated the analytical results, and indicates that under these modes, we can achieve as much as 40% reduction in energy dissipation. © 2007 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofProceedings of the International Conference on Parallel Processing Workshopsen_US
dc.subjectCross-Layer Designen_US
dc.subjectLink Adaptationen_US
dc.subjectRayleigh Fadingen_US
dc.subjectWireless Sensor Networksen_US
dc.titleOn energy efficient communications over Rayleigh fading channel with delivery rate and delay constraints in wireless sensor networksen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwok, YK:ykwok@eee.hku.hken_US
dc.identifier.authorityKwok, YK=rp00128en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/ICPPW.2007.62en_US
dc.identifier.scopuseid_2-s2.0-47749133016en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-47749133016&selection=ref&src=s&origin=recordpageen_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLin, XH=50961503200en_US
dc.identifier.scopusauthoridKwok, YK=7101857718en_US

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