Performance of Hybrid ARQ for Network Diversity Multiple Access Schemes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


Traditionally, a packet with errors, either due to channel noise or collisions, is discarded and needs to be retransmitted, leading to performance losses. Network Diversity Multiple Access (NDMA) handles collisions by combining a multipacket detection scheme with time diversity. In NDMA, the base station (BS) forces mobile terminals (MTs) to transmit J copies of each packet when J MTs collide. Diversity combining is limited to J copies of the packets, not allowing it to adapt to severe errors due to channel noise. This paper considers a multipacket detection scheme recently proposed, which reduces the packet error rate (PER) when more than J copies of the packets are available. In this paper, an Hybrid-ARQ NDMA access mechanism is proposed. The access mechanisms forces MTs with reception errors during a collision resolution epoch to transmit more than J times. Analytical models are proposed for the goodput and delay, considering Poisson traffic. The proposed system's performance is evaluated for a Single-Carrier with Frequency Domain Equalization (SC-FDE) scheme, and compared to classical NDMA.
Original languageUnknown
Title of host publicationIEEE International Conference onComputer Communications and Networks (ICCCN)
Publication statusPublished - 1 Jan 2011
Event20th IEEE International Conference onComputer Communications and Networks (ICCCN) -
Duration: 1 Jan 2011 → …


Conference20th IEEE International Conference onComputer Communications and Networks (ICCCN)
Period1/01/11 → …

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