Multi-antenna adaptive modulation and transmit beamforming based on bandwidth-constrained feedback

Pengfei Xia; Shengli Zhou; Georgios B Giannakis

Multi-antenna adaptive modulation and transmit beamforming based on bandwidth-constrained feedback

Pengfei Xia, Shengli Zhou, Georgios B Giannakis

Electrical and Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

Adaptive modulation has the potential to increase system throughput considerably by matching transmission parameters to the time-varying channel conditions. Crucial to adaptive systems is the requirement of a feedback channel, that often carries only a limited number of bits. Under such a bandwidth-constrained feedback link, we aim to optimize a multi-antenna system based on transmit beamforming and adaptive modulation, where the transmit-power, the signal constellation, the beamforming direction, and the feedback strategy, are designed jointly. Our proposed nested iterative approach leads to an approximate yet practical solution. Simulation results demonstrate considerable improvement in transmission rate, as the number of feedback bits increases.

Original language	English (US)
Pages (from-to)	187-191
Number of pages	5
Journal	Conference Record of the Asilomar Conference on Signals, Systems and Computers
Volume	1
State	Published - 2003
Event	Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: Nov 9 2003 → Nov 12 2003

Find It

Find It at U of M Libraries

Cite this

@article{2d1f1a21c13248e087f595d96f906310,

title = "Multi-antenna adaptive modulation and transmit beamforming based on bandwidth-constrained feedback",

abstract = "Adaptive modulation has the potential to increase system throughput considerably by matching transmission parameters to the time-varying channel conditions. Crucial to adaptive systems is the requirement of a feedback channel, that often carries only a limited number of bits. Under such a bandwidth-constrained feedback link, we aim to optimize a multi-antenna system based on transmit beamforming and adaptive modulation, where the transmit-power, the signal constellation, the beamforming direction, and the feedback strategy, are designed jointly. Our proposed nested iterative approach leads to an approximate yet practical solution. Simulation results demonstrate considerable improvement in transmission rate, as the number of feedback bits increases.",

author = "Pengfei Xia and Shengli Zhou and Giannakis, {Georgios B}",

year = "2003",

language = "English (US)",

volume = "1",

pages = "187--191",

journal = "Conference Record of the Asilomar Conference on Signals, Systems and Computers",

issn = "1058-6393",

publisher = "IEEE Computer Society",

note = "Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers ; Conference date: 09-11-2003 Through 12-11-2003",

}

TY - JOUR

T1 - Multi-antenna adaptive modulation and transmit beamforming based on bandwidth-constrained feedback

AU - Xia, Pengfei

AU - Zhou, Shengli

AU - Giannakis, Georgios B

PY - 2003

Y1 - 2003

N2 - Adaptive modulation has the potential to increase system throughput considerably by matching transmission parameters to the time-varying channel conditions. Crucial to adaptive systems is the requirement of a feedback channel, that often carries only a limited number of bits. Under such a bandwidth-constrained feedback link, we aim to optimize a multi-antenna system based on transmit beamforming and adaptive modulation, where the transmit-power, the signal constellation, the beamforming direction, and the feedback strategy, are designed jointly. Our proposed nested iterative approach leads to an approximate yet practical solution. Simulation results demonstrate considerable improvement in transmission rate, as the number of feedback bits increases.

AB - Adaptive modulation has the potential to increase system throughput considerably by matching transmission parameters to the time-varying channel conditions. Crucial to adaptive systems is the requirement of a feedback channel, that often carries only a limited number of bits. Under such a bandwidth-constrained feedback link, we aim to optimize a multi-antenna system based on transmit beamforming and adaptive modulation, where the transmit-power, the signal constellation, the beamforming direction, and the feedback strategy, are designed jointly. Our proposed nested iterative approach leads to an approximate yet practical solution. Simulation results demonstrate considerable improvement in transmission rate, as the number of feedback bits increases.

UR - http://www.scopus.com/inward/record.url?scp=4143082467&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4143082467&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:4143082467

SN - 1058-6393

VL - 1

SP - 187

EP - 191

JO - Conference Record of the Asilomar Conference on Signals, Systems and Computers

JF - Conference Record of the Asilomar Conference on Signals, Systems and Computers

T2 - Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers

Y2 - 9 November 2003 through 12 November 2003

ER -

Multi-antenna adaptive modulation and transmit beamforming based on bandwidth-constrained feedback

Abstract

Find It

Other files and links

Fingerprint

Cite this