Practical decentralized high-performance coordinated beamforming

Enoch Lu, I-Tai Lu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Coordinated Beamforming (CBF) has been studied in hope of mitigating the inter-cell interference experienced by cell-edge users. Unfortunately, due to the limitations and/or impracticalities of the proposed designs, the expected performance gains have yet to be realized. In this work, a decentralized framework (and various example designs) is proposed for the practical transceiver and signaling design of a K-pair system desiring to employ CBF. Relying on channel soundings from the users and equivalent channel soundings from the cell sites (all on the same frequency), the optimum performance of centralized interference alignment designs is achieved (if not surpassed) when each pair's number of data streams is equal to its user's number of antennas. In addition, higher sum capacities than the generalized iterative approach, a centralized MMSE CBF design, are numerically observed. Clearly, practical CBF designs which can deliver the expected performance gains are finally available.

Original languageEnglish (US)
Title of host publication2011 34th IEEE Sarnoff Symposium, SARNOFF 2011
DOIs
StatePublished - 2011
Event2011 34th IEEE Sarnoff Symposium, SARNOFF 2011 - Princeton, NJ, United States
Duration: May 3 2011May 4 2011

Other

Other2011 34th IEEE Sarnoff Symposium, SARNOFF 2011
CountryUnited States
CityPrinceton, NJ
Period5/3/115/4/11

Fingerprint

Beamforming
Transceivers
Antennas

Keywords

  • Channel Sounding
  • CoMP
  • Coordinated Beamforming
  • Coordinated Multipoint
  • Interference Alignment
  • Network MIMO
  • TDD

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications

Cite this

Practical decentralized high-performance coordinated beamforming. / Lu, Enoch; Lu, I-Tai.

2011 34th IEEE Sarnoff Symposium, SARNOFF 2011. 2011. 5876477.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lu, E & Lu, I-T 2011, Practical decentralized high-performance coordinated beamforming. in 2011 34th IEEE Sarnoff Symposium, SARNOFF 2011., 5876477, 2011 34th IEEE Sarnoff Symposium, SARNOFF 2011, Princeton, NJ, United States, 5/3/11. https://doi.org/10.1109/SARNOF.2011.5876477
Lu, Enoch ; Lu, I-Tai. / Practical decentralized high-performance coordinated beamforming. 2011 34th IEEE Sarnoff Symposium, SARNOFF 2011. 2011.
@inproceedings{51f6b0d286a543ff8ee574eb359444f6,
title = "Practical decentralized high-performance coordinated beamforming",
abstract = "Coordinated Beamforming (CBF) has been studied in hope of mitigating the inter-cell interference experienced by cell-edge users. Unfortunately, due to the limitations and/or impracticalities of the proposed designs, the expected performance gains have yet to be realized. In this work, a decentralized framework (and various example designs) is proposed for the practical transceiver and signaling design of a K-pair system desiring to employ CBF. Relying on channel soundings from the users and equivalent channel soundings from the cell sites (all on the same frequency), the optimum performance of centralized interference alignment designs is achieved (if not surpassed) when each pair's number of data streams is equal to its user's number of antennas. In addition, higher sum capacities than the generalized iterative approach, a centralized MMSE CBF design, are numerically observed. Clearly, practical CBF designs which can deliver the expected performance gains are finally available.",
keywords = "Channel Sounding, CoMP, Coordinated Beamforming, Coordinated Multipoint, Interference Alignment, Network MIMO, TDD",
author = "Enoch Lu and I-Tai Lu",
year = "2011",
doi = "10.1109/SARNOF.2011.5876477",
language = "English (US)",
isbn = "9781612846811",
booktitle = "2011 34th IEEE Sarnoff Symposium, SARNOFF 2011",

}

TY - GEN

T1 - Practical decentralized high-performance coordinated beamforming

AU - Lu, Enoch

AU - Lu, I-Tai

PY - 2011

Y1 - 2011

N2 - Coordinated Beamforming (CBF) has been studied in hope of mitigating the inter-cell interference experienced by cell-edge users. Unfortunately, due to the limitations and/or impracticalities of the proposed designs, the expected performance gains have yet to be realized. In this work, a decentralized framework (and various example designs) is proposed for the practical transceiver and signaling design of a K-pair system desiring to employ CBF. Relying on channel soundings from the users and equivalent channel soundings from the cell sites (all on the same frequency), the optimum performance of centralized interference alignment designs is achieved (if not surpassed) when each pair's number of data streams is equal to its user's number of antennas. In addition, higher sum capacities than the generalized iterative approach, a centralized MMSE CBF design, are numerically observed. Clearly, practical CBF designs which can deliver the expected performance gains are finally available.

AB - Coordinated Beamforming (CBF) has been studied in hope of mitigating the inter-cell interference experienced by cell-edge users. Unfortunately, due to the limitations and/or impracticalities of the proposed designs, the expected performance gains have yet to be realized. In this work, a decentralized framework (and various example designs) is proposed for the practical transceiver and signaling design of a K-pair system desiring to employ CBF. Relying on channel soundings from the users and equivalent channel soundings from the cell sites (all on the same frequency), the optimum performance of centralized interference alignment designs is achieved (if not surpassed) when each pair's number of data streams is equal to its user's number of antennas. In addition, higher sum capacities than the generalized iterative approach, a centralized MMSE CBF design, are numerically observed. Clearly, practical CBF designs which can deliver the expected performance gains are finally available.

KW - Channel Sounding

KW - CoMP

KW - Coordinated Beamforming

KW - Coordinated Multipoint

KW - Interference Alignment

KW - Network MIMO

KW - TDD

UR - http://www.scopus.com/inward/record.url?scp=79960026064&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960026064&partnerID=8YFLogxK

U2 - 10.1109/SARNOF.2011.5876477

DO - 10.1109/SARNOF.2011.5876477

M3 - Conference contribution

SN - 9781612846811

BT - 2011 34th IEEE Sarnoff Symposium, SARNOFF 2011

ER -