A random beamforming technique in multiuser multi-antenna OFDM systems for large system capacity and fairness among users

Yoshitaka Eriguchi, Tomoaki Ohtsuki

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

1 Citation (Scopus)

Abstract

We propose a random beamforming technique in multiuser multi-antenna orthogonal frequency division multiplexing (OFDM) systems for a large system capacity and fairness among users. In the proposed technique, we allocate several beams on each subcarrier to users based on signal-to-interference plus noise ratio (SINR) and all the remaining beams on each subcarrier by the proportional fairness (PF) algorithm. We also use the random unitary matrices corresponding to the beams and subcarriers where each user with low capacity has its highest SINR in the next time slot. We show that compared to the conventional techniques, such as the SINR-based scheduling scheme and the PF scheduling scheme, the proposed technique achieves high system capacity with about the same variance of user capacity.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
DOIs
Publication statusPublished - 2008
Event68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
Duration: 2008 Sep 212008 Sep 24

Other

Other68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
CountryCanada
CityCalgary, AB
Period08/9/2108/9/24

Fingerprint

Beamforming
Fairness
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Antenna
Scheduling
Proportional Fairness
Antennas
Interference
Unitary matrix
Random Matrices

ASJC Scopus subject areas

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

Cite this

A random beamforming technique in multiuser multi-antenna OFDM systems for large system capacity and fairness among users. / Eriguchi, Yoshitaka; Ohtsuki, Tomoaki.

IEEE Vehicular Technology Conference. 2008. 4656934.

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

Eriguchi, Y & Ohtsuki, T 2008, A random beamforming technique in multiuser multi-antenna OFDM systems for large system capacity and fairness among users. in IEEE Vehicular Technology Conference., 4656934, 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference, Calgary, AB, Canada, 08/9/21. https://doi.org/10.1109/VETECF.2008.102
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