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

Deepshikha Garg, Ryohei Kimura, Fumiyuki Adachi

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトル5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002 - Proceedings
出版社IEEE Computer Society
ページ971-975
ページ数5
ISBN(電子版)0780374428
DOI
出版ステータスPublished - 2002
イベント5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002 - Honolulu, United States
継続期間: 2002 10 272002 10 30

出版物シリーズ

名前International Symposium on Wireless Personal Multimedia Communications, WPMC
3
ISSN(印刷版)1347-6890

Other

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

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • コンピュータ サイエンスの応用
  • 人間とコンピュータの相互作用

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