A Novel Adaptive Type-II HARQ Scheme for OFDM Systems

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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Cheng, Jinxia; Zhou, Shidong; Yao, Yan (State Key Lab. on Microwave & Digital Communications, Tsinghua University, Beijing, PR China)

This paper presents a novel adaptive type-II hybrid automatic repeat request (HARQ) scheme combined with interleaving rearrangement and constellation rearrangement, which is applicable for high data rate orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme utilizes the channel state information and rearranges both bits and symbols at each retransmission. Simulation results show that the proposed scheme improves system performance significantly.