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- Publisher Website: 10.1109/TWC.2013.050313.121454
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Article: Signal Alignment: Enabling Physical Layer Network Coding for MIMO Networking
Title | Signal Alignment: Enabling Physical Layer Network Coding for MIMO Networking |
---|---|
Authors | |
Keywords | Interference alignment MIMO networks Network coding Physical layer letwork coding Signal alignment |
Issue Date | 2013 |
Publisher | Institute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=7693 |
Citation | IEEE Transactions on Wireless Communications, 2013, v. 12 n. 6, p. 3012-3023 How to Cite? |
Abstract | We apply signal alignment (SA), a 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 capability, 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 system degrees-of-freedom (DoF). PNC-SA adopts the idea of `demodulating 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 (singal-to-noise-ratio) maximization at the receiver. The mapping from SNR to BER is then analyzed, revealing that the DoF gain of PNC-SA does not come with a sacrifice in BER. We then design a general PNC-SA algorithm in larger systems, and 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. |
Persistent Identifier | http://hdl.handle.net/10722/187131 |
ISSN | 2023 Impact Factor: 8.9 2023 SCImago Journal Rankings: 5.371 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhou, R | - |
dc.contributor.author | Li, Z | - |
dc.contributor.author | Wu, C | - |
dc.contributor.author | Williamson, C | - |
dc.date.accessioned | 2013-08-20T12:30:54Z | - |
dc.date.available | 2013-08-20T12:30:54Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | IEEE Transactions on Wireless Communications, 2013, v. 12 n. 6, p. 3012-3023 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.uri | http://hdl.handle.net/10722/187131 | - |
dc.description.abstract | We apply signal alignment (SA), a 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 capability, 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 system degrees-of-freedom (DoF). PNC-SA adopts the idea of `demodulating 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 (singal-to-noise-ratio) maximization at the receiver. The mapping from SNR to BER is then analyzed, revealing that the DoF gain of PNC-SA does not come with a sacrifice in BER. We then design a general PNC-SA algorithm in larger systems, and 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. | - |
dc.language | eng | - |
dc.publisher | Institute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=7693 | - |
dc.relation.ispartof | IEEE Transactions on Wireless Communications | - |
dc.rights | IEEE Transactions on Wireless Communications. Copyright © Institute of Electrical and Electronics Engineers. | - |
dc.subject | Interference alignment | - |
dc.subject | MIMO networks | - |
dc.subject | Network coding | - |
dc.subject | Physical layer letwork coding | - |
dc.subject | Signal alignment | - |
dc.title | Signal Alignment: Enabling Physical Layer Network Coding for MIMO Networking | - |
dc.type | Article | - |
dc.identifier.email | Wu, C: cwu@cs.hku.hk | - |
dc.identifier.authority | Wu, C=rp01397 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/TWC.2013.050313.121454 | - |
dc.identifier.scopus | eid_2-s2.0-84880147491 | - |
dc.identifier.hkuros | 217639 | - |
dc.identifier.volume | 12 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 3012 | - |
dc.identifier.epage | 3023 | - |
dc.identifier.isi | WOS:000321201200041 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1536-1276 | - |