@inproceedings{12462bd19e9e4321865303598e329210,
title = "Enhanced HARQ schemes based on LDPC coded irregular modulation",
abstract = "The bit-interleaved coded irregular modulation (BICIM) was initially proposed in [6] for convolutional code and Turbo code cases, which applies different signal constellations and mappings within one codeword. We firstly extend this idea to irregular LDPC codes and present an optimized mapping rule for LDPC coded irregular modulation according to the code degree distribution. Furthermore, we apply this optimized LDPC coded irregular modulation to Chase Combing (CC) HARQ and propose two enhanced HARQ schemes. The improved schemes can efficiently reduce the reliability variances of bits after soft combining. Simulation results show that they can not only achieve better BER performance but also provide a throughput performance enhancement.",
keywords = "HARQ, Irregular modulation, LDPC",
author = "Jia Minli and He Zunwen and Kuang Jingming",
year = "2007",
doi = "10.1109/MAPE.2007.4393458",
language = "English",
isbn = "1424410444",
series = "IEEE 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE",
publisher = "IEEE Computer Society",
pages = "1088--1092",
booktitle = "IEEE 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE",
address = "United States",
note = "2007 IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications, MAPE 2007 ; Conference date: 14-08-2007 Through 17-08-2007",
}