A hybrid ARQ protocol with a multi-copy retransmission scheme for real-time ATM services in broadband radio access networks

Chang Wook Ahn, Chung Gu Kang, Chul Hee Kang, Woo Shik Kang

Research output: Contribution to journalArticle

Abstract

In this paper, we propose a new type of hybrid ARQ protocol, in which a channel-adaptive variable rate channel coding scheme is combined with a multi-copy retransmission strategy so as to enhance the system performance under the delay constraint of real-time ATM services in broadband radio access networks. The main feature of a multi-copy retransmission strategy in this scheme is to improve the average throughput for a given Forward Error Correction (FEC) rate, subject to the prescribed cell loss requirement of the real-time wireless ATM services, while augmenting the reliability of channel state information required for a channel-adaptive FEC scheme. Our analysis shows that under a harsh fading channel, the proposed approach is useful for achieving the prescribed cell loss performance without significantly degrading the average throughput performance.

Original languageEnglish
Pages (from-to)2797-2804
Number of pages8
JournalIEICE Transactions on Communications
VolumeE84-B
Issue number10
Publication statusPublished - 2001 Oct 1

Keywords

  • Channel-adaptive FEC
  • Hybrid ARQ
  • Multi-copy retransmission
  • Real-time ATM services

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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