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Conference Paper: Physical layer network coding with signal alignment for MIMO wireless networks
Title | Physical layer network coding with signal alignment for MIMO wireless networks |
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Authors | |
Issue Date | 2011 |
Publisher | IEEE, 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? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/135698 |
ISBN | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhou, R | en_HK |
dc.contributor.author | Li, Z | en_HK |
dc.contributor.author | Wu, C | en_HK |
dc.contributor.author | Williamson, C | en_HK |
dc.date.accessioned | 2011-07-27T01:39:55Z | - |
dc.date.available | 2011-07-27T01:39:55Z | - |
dc.date.issued | 2011 | en_HK |
dc.identifier.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 | en_HK |
dc.identifier.isbn | 978-0-7695-4469-4 | - |
dc.identifier.uri | http://hdl.handle.net/10722/135698 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.publisher | IEEE, Computer Society. | - |
dc.relation.ispartof | Proceedings of the IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems, MASS 2011 | en_HK |
dc.title | Physical layer network coding with signal alignment for MIMO wireless networks | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://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.email | Wu, C:cwu@cs.hku.hk | en_HK |
dc.identifier.authority | Wu, C=rp01397 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/MASS.2011.142 | en_HK |
dc.identifier.scopus | eid_2-s2.0-83355161578 | en_HK |
dc.identifier.hkuros | 187761 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-83355161578&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.spage | 530 | en_HK |
dc.identifier.epage | 539 | en_HK |
dc.description.other | 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 | - |
dc.identifier.scopusauthorid | Zhou, R=54682522700 | en_HK |
dc.identifier.scopusauthorid | Li, Z=35316050800 | en_HK |
dc.identifier.scopusauthorid | Wu, C=15836048100 | en_HK |
dc.identifier.scopusauthorid | Williamson, C=35614873700 | en_HK |