Design of Adaptive Modulation and Coding Scheme for Truncated Hybrid ARQ
Wireless Personal Communications: An International Journal
Improving user throughput with Interleaved-HARQ in OFDM systems
FGIT'12 Proceedings of the 4th international conference on Future Generation Information Technology
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We propose an optimal modulation and coding scheme (MCS) selection criterion for maximizing user throughput in cellular networks. The proposed criterion adopts both the Chase combining and incremental redundancy based hybrid automatic repeat request (HARQ) mechanisms and it selects an MCS level that maximizes the expected throughput which is estimated by considering both the number of transmissions and successful decoding probability in HARQ operation. We also prove that the conventional MCS selection rule is not optimized with mathematical analysis. Through link-level and system-level simulations, we show that the proposed MCS selection criterion yields higher average cell throughput than the conventional MCS selection schemes for slowly varying channels.