Receiver design for type-I hybrid ARQ scheme in frequency-selectivefading channels
Jing Liang; Zhi Ding; Shu Lin
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Volume 2, Issue , 2001 Page(s):959 - 963 vol.2
Digital Object Identifier   10.1109/ACSSC.2001.987637
Summary:This paper proposes a new receiver design for a type-I hybrid automatic repeat request (ARQ) scheme in wireless packet data services. To achieve reliable transmission under a multipath fading channel environment, temporal diversity from retransmissions is utilized to facilitate channel equalization and error correction via low density parity check (LDPC) codes. A linear equalization receiver structure and an iterative interference cancellation receiver structure are investigated separately. Moreover, three different channel estimation schemes are discussed and their impact on throughput performance are demonstrated

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