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Hybrid-Automatic-Repeat-reQuest H-ARQ has become an indispensable technique in reliable communication systems. Hence, in this paper we review the state-of-art and investigate the performance of H-ARQ in the context of cooperative wireless communications. As a novel advance, we also propose a relay-switching regime based H-ARQ scheme, which is capable of increasing the achievable system throughput...
Incremental relaying is a communication technique enabling cooperative diversity in wireless networks. The relay forwards a correctly decoded packet only after getting the feedback that the destination failed to receive the data directly from the source. We model an incremental relaying protocol as a time-discrete finite-state Markov process and analyze its throughput performance in time-correlated...
In this paper, we study retransmission strategies for the symmetric relaying scenario when the number of retransmissions for a data packet is limited. We propose a retransmission scheme based on superposition modulation and give the exact packet drop probability expression for it when only one retransmission is allowed. We compare the performance of the proposed retransmission scheme with retransmission...
Transmission Control Protocol (TCP), the almost universally used reliable transport protocol in the Internet, has been engineered to perform well in wired networks. TCP throughput, however, degrades over wireless links. Over such wireless links, the performance achieved by TCP can be improved through the use of cross-layer algorithms. In this paper, a novel cross-layer approach (Link Layer CLAMP -...
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