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Selfish Retransmission Scheme in IR-UWB System  

Kang, Ji-Myung (한국전기연구원 전기정보망연구그룹)
Park, Young-Jin (한국전기연구원 전기정보망연구그룹)
Lee, Soon-Woo (한국전기연구원 전기정보망연구그룹)
Kim, Yong-Hwa (한국전기연구원 전기정보망연구그룹)
Kim, Kwan-Ho (한국전기연구원 전기정보망연구그룹)
Publication Information
Journal of KIISE:Information Networking / v.36, no.5, 2009 , pp. 383-388 More about this Journal
Abstract
In this paper, we focus on the retransmission following transmission failure in impulse radio ultra wideband (IR-UWB). The reasons of transmission failure are classified and a new 'selfish' retransmission protocol is proposed because time hopping can support multiple transmissions at the same time. Selfish retransmission protocol retransmits packets immediately without any kind of timeout or channel observation. Simulation results show that the proposed protocol improves throughput up to 50% and decreases retransmission delay also up to 70%, compared to a conventional retransmission system in IR-UWB.
Keywords
IR-UWB; ARQ; Retransmission; Time Hopping;
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