Adaptive rate and power allocation schemes for OFDM/SDMA systems

Behrouz Maham, Esrafil Jedari, Alireza Enayati

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

Abstract

In this paper, adaptive resource allocation approaches, which jointly adapts power distribution and subcarrier allocation to instantaneous channel conditions, is proposed for uplink OFDM/SDMA-based multiuser system. The first scheme utilizes adaptive algorithm to reduce symbol-error rate. The closed-form algorithm is derived for this idea. The second contribution in this paper deals with constant-rate transmissions over a spatial multiuser OFDM system. In the proposed system, the receiver jointly optimizes rate and power assignments for each user and then informs them to the transmitter via a low-rate feedback channels.

Original languageEnglish
Title of host publicationThe 2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007
DOIs
Publication statusPublished - Dec 1 2007
Event2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007 - Sydney, Australia
Duration: Aug 27 2007Aug 30 2007

Publication series

NameThe 2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007

Other

Other2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007
CountryAustralia
CitySydney
Period8/27/078/30/07

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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