Resource allocation scheme in MIMO-OFDMA system for user's different data throughput requirements

Maung Sann Maw, Iwao Sasase

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

In the subcarrier and power allocation schemes in Multi-Input Multi-Output and Orthogonal Frequency Division Multiple Access (MIMO-OFDMA) systems, only equal fairness among users has been considered and no scheme for proportional data rate fairness has been considered. In this paper, a subcarrier, bit and power allocation scheme is proposed to maximize the total throughput under the constraints of total power and proportional data rate fairness among users. In the proposed scheme, joint subchannel allocation and adaptive bit loading is firstly performed by using singular value decomposition (SVD) of channel matrix under the constraint of users' data throughput requirements, and then adaptive power loading is applied. Simulation results show that effective performance of the system has been improved as well as each throughput is proportionally distributed among users in MIMO-OFDMA systems.

Original languageEnglish
Pages (from-to)494-504
Number of pages11
JournalIEICE Transactions on Communications
VolumeE91-B
Issue number2
DOIs
Publication statusPublished - 2008 Jan 1

Keywords

  • Adaptive resource allocation
  • MIMO
  • OFDMA
  • SVD

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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