A Hybrid Arq Protocol With Improved Performance

In recent past several new and modified ARQ protocols are studied in literature in order to achieve higher throughput. Packet combining scheme, Modified Packet Combining scheme, Truncated Packet Transmission Scheme, Bit Oriented XOR based packet transmission scheme are well defined ARQ protocol for error correction either by retransmission or by processing at the receiver. For retransmission, Satry’s multi copies technique was extensively studied by Bhunia whereby it was established to fix multiple copies with number of times retransmission are requested. For correction at the receiver, packet combining scheme suggested by Chakraborty and Multiple Packet Combining scheme introduced by Bhunia are understood. In the paper we propose a hybrid ARQ technique made of multi copies retransmission with packet combining & Multiple packet combining scheme and study its performance in terms of throughput.

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