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Bit-Level Hybrid-ARQ Schemes with Turbo Codes
Dong Ho KIM Hwang-Soo LEE
IEICE TRANSACTIONS on Communications
Publication Date: 2004/11/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
hybrid-ARQ, bit level, turbo codes,
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With iterative turbo decoding, the reliability of each bit in a frame is not same after some iterations. We propose novel bit-level hybrid automatic repeat request (HARQ) schemes with turbo codes in which only the unreliable bit and its neighboring bits are retransmitted based on the decoding reliability. The proposed bit-level HARQ schemes improve error performance compared with conventional HARQ schemes.