Presentation 2006-05-25
The Reliability based Hybrid ARQ Scheme with both the Encoded Parity Bit Retransmissions and Message Passing Decoding(HISC2006)
Daiki KOIZUMI, Naoto KOBAYASHI, Toshiyasu MATSUSHIMA, Shigeichi HIRASAWA,
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Abstract(in English) Reliability Based Hybrid ARQ (RB-HARQ) is an ARQ scheme using the modified feedback. In the RB-HARQ, the receiver returns both NAK signal and unreliable bit indices if the received sequence is not acknowledged. Since the unreliable bit index is determined by the bitwise posterior probability, better approximation of that probability is crucial. Assuming the systematic codes, the proposed RB-HARQ scheme has two features for this approximation: (1) The sender retransmits newly encoded parity bits corresponding to the unreliable information bits; (2) The retransmitted parity bits as well as the initial received sequence are put all together to perform the message passing decoding.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) reliability based hybrid ARQ / bitwise MAP decoding / message passing algorithm
Paper # IT2006-17
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Committee IT
Conference Date 2006/5/18(1days)
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Registration To Information Theory (IT)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) The Reliability based Hybrid ARQ Scheme with both the Encoded Parity Bit Retransmissions and Message Passing Decoding(HISC2006)
Sub Title (in English)
Keyword(1) reliability based hybrid ARQ
Keyword(2) bitwise MAP decoding
Keyword(3) message passing algorithm
1st Author's Name Daiki KOIZUMI
1st Author's Affiliation Waseda University()
2nd Author's Name Naoto KOBAYASHI
2nd Author's Affiliation Waseda University
3rd Author's Name Toshiyasu MATSUSHIMA
3rd Author's Affiliation Waseda University
4th Author's Name Shigeichi HIRASAWA
4th Author's Affiliation Waseda University
Date 2006-05-25
Paper # IT2006-17
Volume (vol) vol.106
Number (no) 60
Page pp.pp.-
#Pages 6
Date of Issue