Effect of limited number of retransmissions of RCPT hybrid ARQ for DS-CDMA mobile radio

Deepshikha Garg, Ryohei Kimura, Fumiyuki Adachi

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

5 Citations (Scopus)

Abstract

In this paper, we evaluate by computer simulations the signal energy per information bit (Eb/N0) for rate compatible punctured turbo (RCPT) coded hybrid ARQ for direct sequence code division multiple access (DS-CDMA) with antenna diversity reception and Rake combining in a frequency selective Rayleigh fading channel when the number of allowable retransmissions is limited. When the number of allowable retransmissions is unlimited, transmitting minimum amount of redundancy bits with each retransmission would result in the highest throughput as unnecessary redundancy is avoided. However in a practical system, the number of retransmissions allowed is limited to avoid unacceptable time delay before the successful transmission of a packet. When the number of retransmissions is limited, residual bit error is produced. In this paper, we consider different RCPT Hybrid ARQ schemes with limited number of retransmissions. It is found that the type II hybrid ARQ scheme is the most favorable in terms of required Eb/N0 for a given bit error rate (BER), while the type I hybrid ARQ scheme, is the most favorable for delay sensitive systems. For the type II hybrid ARQ schemes, the minimum required Eb/N0 is attained after all the parity bits are transmitted and hence depends on the puncturing period.

Original languageEnglish
Title of host publication5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002 - Proceedings
PublisherIEEE Computer Society
Pages971-975
Number of pages5
ISBN (Electronic)0780374428
DOIs
Publication statusPublished - 2002 Jan 1
Event5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002 - Honolulu, United States
Duration: 2002 Oct 272002 Oct 30

Publication series

NameInternational Symposium on Wireless Personal Multimedia Communications, WPMC
Volume3
ISSN (Print)1347-6890

Other

Other5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002
CountryUnited States
CityHonolulu
Period02/10/2702/10/30

Keywords

  • Frequency selective channel
  • Hybrid ARQ
  • Mobile communication
  • Rate compatible punctured turbo codes

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Human-Computer Interaction

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  • Cite this

    Garg, D., Kimura, R., & Adachi, F. (2002). Effect of limited number of retransmissions of RCPT hybrid ARQ for DS-CDMA mobile radio. In 5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002 - Proceedings (pp. 971-975). [1088322] (International Symposium on Wireless Personal Multimedia Communications, WPMC; Vol. 3). IEEE Computer Society. https://doi.org/10.1109/WPMC.2002.1088322