Normal graphs for downlink multiuser MIMO scheduling

Jung Chieh Chen, Cheng Hsuan Wu, Chao Kai Wen, Yao Nan Lee, Hsin Yi Lu, Pangan Ting

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

Abstract

Inspired by the success of the low-density parity-check (LDPC) codes in the field of error-control coding, in this paper we propose transforming the downlink multiuser multiple-input multiple-output scheduling problem into an LDPC-like problem using the normal graph. Based on the normal graph framework, soft information, which indicates the probability that each user will be scheduled to transmit packets at the access point through a specified angle-frequency sub-channel, is exchanged among the local processors to iteratively optimize the multiuser transmission schedule. Computer simulations show that the proposed algorithm can efficiently schedule simultaneous multiuser transmission which then increases the overall channel utilization and reduces the average packet delay.1

Original languageEnglish
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Pages3511-3515
Number of pages5
DOIs
Publication statusPublished - 2008
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: 2008 May 192008 May 23

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

OtherIEEE International Conference on Communications, ICC 2008
Country/TerritoryChina
CityBeijing
Period08-05-1908-05-23

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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