Hybrid ARQ With Symbol Mapping Diversity and Turbo Demodulation based on LDPC Codes
Seok-Ki Ahn, Kyeongcheol Yang · 2009
In this paper we propose a high-performance Hybrid ARQ scheme employing Chase combining based on LDPC (Low-Density Parity-Check) codes. The proposed scheme uses symbol mapping diversity and turbo demodulation to improve decoding performance. We analyze the performance of the proposed scheme by EXIT (EXtrinsic Information Transfer) chart and compare its performance with several symbol mappings.