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Conference Paper: Physical layer network coding with signal alignment for MIMO wireless networks

TitlePhysical layer network coding with signal alignment for MIMO wireless networks
Authors
Issue Date2011
PublisherIEEE, Computer Society.
Citation
The IEEE 8th International Conference on Mobile Adhoc and Sensor Systems (MASS), Valencia, Spain, 17-22 October 2011. In Proceedings of 8th MASS, 2011, p. 530-539 How to Cite?
AbstractWe propose signal alignment (SA), a new wireless communication technique that enables physical layer network coding (PNC) in multi-input multi-output (MIMO) wireless networks. Through calculated precoding, SA contracts the perceived signal space at a node to match its receive diversity, and hence facilitates the demodulation of linearly combined data packets. PNC coupled with SA (PNC-SA) has the potential of fully exploiting the precoding space at the senders, and can better utilize the spatial diversity of a MIMO network for higher transmission rates, outperforming existing techniques including MIMO or PNC alone, interference alignment (IA) and interference alignment and cancellation (IAC). PNC-SA adopts the seminal idea of "demodulate a linear combination" from PNC. The design of PNC-SA is also inspired by recent advances in IA though SA aligns signals not interferences. We study the optimal precoding and power allocation problem of PNC-SA, for SNR maximization at the receiver. The mapping from SNR to BER is then analyzed, revealing that the throughput gain of PNC-SA does not come with a sacrifice in BER. We finally demonstrate general applications of PNC-SA, and show via network level simulations that it can substantially increase the throughput of unicast and multicast sessions, by opening previously unexplored solution spaces in multi-hop MIMO routing. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/135698
ISBN
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Ren_HK
dc.contributor.authorLi, Zen_HK
dc.contributor.authorWu, Cen_HK
dc.contributor.authorWilliamson, Cen_HK
dc.date.accessioned2011-07-27T01:39:55Z-
dc.date.available2011-07-27T01:39:55Z-
dc.date.issued2011en_HK
dc.identifier.citationThe IEEE 8th International Conference on Mobile Adhoc and Sensor Systems (MASS), Valencia, Spain, 17-22 October 2011. In Proceedings of 8th MASS, 2011, p. 530-539en_HK
dc.identifier.isbn978-0-7695-4469-4-
dc.identifier.urihttp://hdl.handle.net/10722/135698-
dc.description.abstractWe propose signal alignment (SA), a new wireless communication technique that enables physical layer network coding (PNC) in multi-input multi-output (MIMO) wireless networks. Through calculated precoding, SA contracts the perceived signal space at a node to match its receive diversity, and hence facilitates the demodulation of linearly combined data packets. PNC coupled with SA (PNC-SA) has the potential of fully exploiting the precoding space at the senders, and can better utilize the spatial diversity of a MIMO network for higher transmission rates, outperforming existing techniques including MIMO or PNC alone, interference alignment (IA) and interference alignment and cancellation (IAC). PNC-SA adopts the seminal idea of "demodulate a linear combination" from PNC. The design of PNC-SA is also inspired by recent advances in IA though SA aligns signals not interferences. We study the optimal precoding and power allocation problem of PNC-SA, for SNR maximization at the receiver. The mapping from SNR to BER is then analyzed, revealing that the throughput gain of PNC-SA does not come with a sacrifice in BER. We finally demonstrate general applications of PNC-SA, and show via network level simulations that it can substantially increase the throughput of unicast and multicast sessions, by opening previously unexplored solution spaces in multi-hop MIMO routing. © 2011 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEE, Computer Society.-
dc.relation.ispartofProceedings of the IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems, MASS 2011en_HK
dc.rightsIEEE Internatonal Conference on Mobile Adhoc and Sensor Systems Proceedings. Copyright © IEEE, Computer Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2011 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.-
dc.titlePhysical layer network coding with signal alignment for MIMO wireless networksen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=978-0-7695-4469-4&volume=&spage=530&epage=539&date=2011&atitle=Physical+layer+network+coding+with+signal+alignment+for+MIMO+wireless+networks-
dc.identifier.emailWu, C:cwu@cs.hku.hken_HK
dc.identifier.authorityWu, C=rp01397en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/MASS.2011.142en_HK
dc.identifier.scopuseid_2-s2.0-83355161578en_HK
dc.identifier.hkuros187761en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-83355161578&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage530en_HK
dc.identifier.epage539en_HK
dc.description.otherThe IEEE 8th International Conference on Mobile Adhoc and Sensor Systems (MASS), Valencia, Spain, 17-22 October 2011. In Proceedings of 8th MASS, 2011, p. 530-539-
dc.identifier.scopusauthoridZhou, R=54682522700en_HK
dc.identifier.scopusauthoridLi, Z=35316050800en_HK
dc.identifier.scopusauthoridWu, C=15836048100en_HK
dc.identifier.scopusauthoridWilliamson, C=35614873700en_HK

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