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- Publisher Website: 10.1109/TIT.2011.2178140
- Scopus: eid_2-s2.0-84857719913
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Article: Spatial interference cancellation for multiantenna mobile ad hoc networks
Title | Spatial interference cancellation for multiantenna mobile ad hoc networks |
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Authors | |
Issue Date | 2012 |
Citation | IEEE Transactions on Information Theory, 2012, v. 58 n. 3, p. 1660-1676 How to Cite? |
Abstract | Interference between nodes is a critical impairment in mobile ad hoc networks. This paper studies the role of multiple antennas in mitigating such interference. Specifically, a network is studied in which receivers apply zero-forcing beamforming to cancel the strongest interferers. Assuming a network with Poisson-distributed transmitters and independent Rayleigh fading channels, the transmission capacity is derived, which gives the maximum number of successful transmissions per unit area. Mathematical tools from stochastic geometry are applied to obtain the asymptotic transmission capacity scaling and characterize the impact of inaccurate channel state information (CSI). It is shown that, if each node cancels L interferers, the transmission capacity decreases as Θ (∈1/L+1) as the outage probability ∈ vanishes. For fixed ∈, as L grows, the transmission capacity increases as Θ (L 1-2/α) where α is the path-loss exponent. Moreover, CSI inaccuracy is shown to have no effect on the transmission capacity scaling as ∈ vanishes, provided that the CSI training sequence has an appropriate length, which we derive. Numerical results suggest that canceling merely one interferer by each node may increase the transmission capacity by an order of magnitude or more, even when the CSI is imperfect. © 2012 IEEE. |
Persistent Identifier | http://hdl.handle.net/10722/194348 |
ISSN | 2019 Impact Factor: 3.036 2015 SCImago Journal Rankings: 1.433 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Huang, K | - |
dc.contributor.author | Andrews, JG | - |
dc.contributor.author | Guo, D | - |
dc.contributor.author | Heath Jr, RW | - |
dc.contributor.author | Berry, RA | - |
dc.date.accessioned | 2014-01-30T03:32:28Z | - |
dc.date.available | 2014-01-30T03:32:28Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | IEEE Transactions on Information Theory, 2012, v. 58 n. 3, p. 1660-1676 | - |
dc.identifier.issn | 0018-9448 | - |
dc.identifier.uri | http://hdl.handle.net/10722/194348 | - |
dc.description.abstract | Interference between nodes is a critical impairment in mobile ad hoc networks. This paper studies the role of multiple antennas in mitigating such interference. Specifically, a network is studied in which receivers apply zero-forcing beamforming to cancel the strongest interferers. Assuming a network with Poisson-distributed transmitters and independent Rayleigh fading channels, the transmission capacity is derived, which gives the maximum number of successful transmissions per unit area. Mathematical tools from stochastic geometry are applied to obtain the asymptotic transmission capacity scaling and characterize the impact of inaccurate channel state information (CSI). It is shown that, if each node cancels L interferers, the transmission capacity decreases as Θ (∈1/L+1) as the outage probability ∈ vanishes. For fixed ∈, as L grows, the transmission capacity increases as Θ (L 1-2/α) where α is the path-loss exponent. Moreover, CSI inaccuracy is shown to have no effect on the transmission capacity scaling as ∈ vanishes, provided that the CSI training sequence has an appropriate length, which we derive. Numerical results suggest that canceling merely one interferer by each node may increase the transmission capacity by an order of magnitude or more, even when the CSI is imperfect. © 2012 IEEE. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE Transactions on Information Theory | - |
dc.title | Spatial interference cancellation for multiantenna mobile ad hoc networks | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/TIT.2011.2178140 | - |
dc.identifier.scopus | eid_2-s2.0-84857719913 | - |
dc.identifier.volume | 58 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 1660 | - |
dc.identifier.epage | 1676 | - |
dc.identifier.isi | WOS:000300845900022 | - |