A Novel Adaptive Type-II HARQ Scheme for OFDM Systems

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

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.