TY - GEN
T1 - Enhanced HARQ employing LDPC coded constellation rearrangement with 64QAM
AU - Jia, Min Li
AU - Kuang, Jing Ming
AU - He, Zun Wen
PY - 2006
Y1 - 2006
N2 - In this paper, a novel algorithm for searching optimal ILARQ methods with constellation rearrangement is proposed. This novel method tries to average the combined reliability of demodulated bits after retransmissions. According to this idea, two constellation rearrangement schemes for 64QAM with restricted retransmission times are presented through the proposed search algorithm, which can well equalize the reliabilities of various bit positions after chase combining (CC) HARQ so as to improve the LDPC decoder's performance. Simulation results show that the two presented schemes outperforms than the traditional HARQ methods with constellation rearrangement in term of BER and throughput performance. It not only can be used in LDPC coded HARQ but also apply to Turbo coded HARQ with arbitrary MQAM constellation rearrangement.
AB - In this paper, a novel algorithm for searching optimal ILARQ methods with constellation rearrangement is proposed. This novel method tries to average the combined reliability of demodulated bits after retransmissions. According to this idea, two constellation rearrangement schemes for 64QAM with restricted retransmission times are presented through the proposed search algorithm, which can well equalize the reliabilities of various bit positions after chase combining (CC) HARQ so as to improve the LDPC decoder's performance. Simulation results show that the two presented schemes outperforms than the traditional HARQ methods with constellation rearrangement in term of BER and throughput performance. It not only can be used in LDPC coded HARQ but also apply to Turbo coded HARQ with arbitrary MQAM constellation rearrangement.
UR - http://www.scopus.com/inward/record.url?scp=34547604171&partnerID=8YFLogxK
U2 - 10.1109/ICCT.2006.341937
DO - 10.1109/ICCT.2006.341937
M3 - Conference contribution
AN - SCOPUS:34547604171
SN - 1424408016
SN - 9781424408016
T3 - International Conference on Communication Technology Proceedings, ICCT
BT - 2006 International Conference on Communication Technology, ICCT '06
T2 - 2006 International Conference on Communication Technology, ICCT '06
Y2 - 27 November 2006 through 30 November 2006
ER -