Opportunistic collaborative beamforming with one-bit feedback

Man On Pun, D. Richard Brown, H. Vincent Poor

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

An energy-efficient opportunistic collaborative beamformer with one-bit feedback is proposed for ad hoc sensor networks transmitting a common message over independent Rayleigh fading channels to a relatively distant destination node. In contrast to conventional collaborative beamforming schemes in which each relay node uses channel state information (CSI) to pre-compensate for its channel phase and local carrier offset, the relay nodes in the proposed beamforming scheme do not perform any phase precompensation. Instead, the destination node broadcasts a relay node selection vector to the pool of available relay nodes to opportunistically select a subset of relay nodes whose transmitted signals combine in a quasicoherent manner at the destination. Since the selection vector only indicates which relay nodes are to participate in the collaborative beamformer and does not convey any CSI, only one bit of feedback is required per relay node. Theoretical analysis shows that the received signal power obtained with the proposed opportunistic collaborative beamforming scheme scales linearly with the number of available relay nodes under a fixed total power constraint. Since computation of the optimal selection vector is exponentially complex in the number of available relays, three low-complexity sub-optimal relay node selection rules are also proposed. Simulation results confirm the effectiveness of opportunistic collaborative beamforming with the low-complexity relay node selection rules.

Original languageEnglish (US)
Pages (from-to)2629-2641
Number of pages13
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number5
DOIs
StatePublished - May 1 2009

Fingerprint

Beamforming
Relay
Feedback
Channel state information
Vertex of a graph
Rayleigh fading
Ad hoc networks
Fading channels
Sensor networks
Selection Rules
Channel State Information
Low Complexity
Rayleigh Fading Channel
Ad Hoc Networks
Energy Efficient
Broadcast
Sensor Networks
Theoretical Analysis
Linearly

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Cite this

@article{2d57e4331c364b07ac2ca4de16454d73,
title = "Opportunistic collaborative beamforming with one-bit feedback",
abstract = "An energy-efficient opportunistic collaborative beamformer with one-bit feedback is proposed for ad hoc sensor networks transmitting a common message over independent Rayleigh fading channels to a relatively distant destination node. In contrast to conventional collaborative beamforming schemes in which each relay node uses channel state information (CSI) to pre-compensate for its channel phase and local carrier offset, the relay nodes in the proposed beamforming scheme do not perform any phase precompensation. Instead, the destination node broadcasts a relay node selection vector to the pool of available relay nodes to opportunistically select a subset of relay nodes whose transmitted signals combine in a quasicoherent manner at the destination. Since the selection vector only indicates which relay nodes are to participate in the collaborative beamformer and does not convey any CSI, only one bit of feedback is required per relay node. Theoretical analysis shows that the received signal power obtained with the proposed opportunistic collaborative beamforming scheme scales linearly with the number of available relay nodes under a fixed total power constraint. Since computation of the optimal selection vector is exponentially complex in the number of available relays, three low-complexity sub-optimal relay node selection rules are also proposed. Simulation results confirm the effectiveness of opportunistic collaborative beamforming with the low-complexity relay node selection rules.",
author = "Pun, {Man On} and Brown, {D. Richard} and Poor, {H. Vincent}",
year = "2009",
month = "5",
day = "1",
doi = "https://doi.org/10.1109/TWC.2009.080512",
language = "English (US)",
volume = "8",
pages = "2629--2641",
journal = "IEEE Transactions on Wireless Communications",
issn = "1536-1276",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "5",

}

Opportunistic collaborative beamforming with one-bit feedback. / Pun, Man On; Brown, D. Richard; Poor, H. Vincent.

In: IEEE Transactions on Wireless Communications, Vol. 8, No. 5, 01.05.2009, p. 2629-2641.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Opportunistic collaborative beamforming with one-bit feedback

AU - Pun, Man On

AU - Brown, D. Richard

AU - Poor, H. Vincent

PY - 2009/5/1

Y1 - 2009/5/1

N2 - An energy-efficient opportunistic collaborative beamformer with one-bit feedback is proposed for ad hoc sensor networks transmitting a common message over independent Rayleigh fading channels to a relatively distant destination node. In contrast to conventional collaborative beamforming schemes in which each relay node uses channel state information (CSI) to pre-compensate for its channel phase and local carrier offset, the relay nodes in the proposed beamforming scheme do not perform any phase precompensation. Instead, the destination node broadcasts a relay node selection vector to the pool of available relay nodes to opportunistically select a subset of relay nodes whose transmitted signals combine in a quasicoherent manner at the destination. Since the selection vector only indicates which relay nodes are to participate in the collaborative beamformer and does not convey any CSI, only one bit of feedback is required per relay node. Theoretical analysis shows that the received signal power obtained with the proposed opportunistic collaborative beamforming scheme scales linearly with the number of available relay nodes under a fixed total power constraint. Since computation of the optimal selection vector is exponentially complex in the number of available relays, three low-complexity sub-optimal relay node selection rules are also proposed. Simulation results confirm the effectiveness of opportunistic collaborative beamforming with the low-complexity relay node selection rules.

AB - An energy-efficient opportunistic collaborative beamformer with one-bit feedback is proposed for ad hoc sensor networks transmitting a common message over independent Rayleigh fading channels to a relatively distant destination node. In contrast to conventional collaborative beamforming schemes in which each relay node uses channel state information (CSI) to pre-compensate for its channel phase and local carrier offset, the relay nodes in the proposed beamforming scheme do not perform any phase precompensation. Instead, the destination node broadcasts a relay node selection vector to the pool of available relay nodes to opportunistically select a subset of relay nodes whose transmitted signals combine in a quasicoherent manner at the destination. Since the selection vector only indicates which relay nodes are to participate in the collaborative beamformer and does not convey any CSI, only one bit of feedback is required per relay node. Theoretical analysis shows that the received signal power obtained with the proposed opportunistic collaborative beamforming scheme scales linearly with the number of available relay nodes under a fixed total power constraint. Since computation of the optimal selection vector is exponentially complex in the number of available relays, three low-complexity sub-optimal relay node selection rules are also proposed. Simulation results confirm the effectiveness of opportunistic collaborative beamforming with the low-complexity relay node selection rules.

UR - http://www.scopus.com/inward/record.url?scp=77953723665&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953723665&partnerID=8YFLogxK

U2 - https://doi.org/10.1109/TWC.2009.080512

DO - https://doi.org/10.1109/TWC.2009.080512

M3 - Article

VL - 8

SP - 2629

EP - 2641

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

SN - 1536-1276

IS - 5

ER -