A Hybrid ARQ Protocol with a Multi-Copy Retransmission Scheme for Real-Time ATM Services in Broadband Radio Access Networks
Chang Wook Ahn, Chung Gu Kang, Chul Hee Kang, Woo Shik Kang · IEICE Transactions on Communications · 2001
SUMMARY In this paper, we propose a new type of hybrid ARQ protocol, in which a channel-adaptive variable rate channel coding scheme is combined with a multi-copy retransmission strategy so as to enhance the system performance under the delay constraint of real-time ATMservices in broadband radio access networks. The main feature of a multi-copy retransmission strategy in this scheme is to improve the average throughput for a given Forward Error Correction (FEC) rate, subject to the prescribed cell loss requirement of the real-time wireless ATMservices, while augmenting the reliability of channel state information required for a channel-adaptive FEC scheme. Our analysis shows that under a harsh fading channel, the proposed approach is useful for achieving the prescribed cell loss performance without significantly degrading the average throughput performance.