On the ARQ protocols over the Z-interference channels: Diversity-multiplexing-delay tradeoff

Mohamed S. Nafea, Doha R. Hamza, Karim G. Seddik, Mohamed Nafie, Hesham El Gamal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


We characterize the achievable three-dimensional tradeoff between diversity, multiplexing, and delay of the single antenna Automatic Retransmission reQuest (ARQ) Z-interference channel. Non-cooperative and cooperative ARQ protocols are adopted under these assumptions. Considering no cooperation exists, we study the achievable tradeoff of the fixed-power split Han-Kobayashi (HK) approach. Interestingly, we demonstrate that if the second user transmits the common part only of its message in the event of its successful decoding and a decoding failure at the first user, communication is improved over that achieved by keeping or stopping the transmission of both the common and private messages. Under cooperation, two special cases of the HK are considered for static and dynamic decoders. The difference between the two decoders lies in the ability of the latter to dynamically choose which HK special-case decoding to apply. Cooperation is shown to dramatically increase the achievable first user diversity. © 2012 IEEE.
Original languageEnglish (US)
Title of host publication2012 IEEE International Symposium on Information Theory Proceedings
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781467325790
StatePublished - Jul 2012

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KAUST Repository Item: Exported on 2020-10-01


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