Transmission latency and reliability trade-off in path-time coded cognitive radio ad hoc networks

Yi Chi Chen, I. Wei Lai, Kwang Cheng Chen, Wen Tsuen Chen, Chia Han Lee

    研究成果: 書貢獻/報告類型會議貢獻

    4 引文 斯高帕斯(Scopus)

    摘要

    Cognitive radio ad hoc network (CRAHN) is considered as a key technology to enhance the spectrum efficiency for diverse applications. However, due to the opportunistic links, the intrinsic randomness of the CRAHN makes the traditional precise control of the end-to-end transmission unscalable and generally infeasible. The recently-proposed virtual multiple-input multiple-output (MIMO) framework exploits the multipath routing to create the diversity at the network layer. With only local information and no feedback control channel, the path-time code (PTC) of the virtual MIMO system is able to efficiently provide the error resilient end-to-end transmission. In particular, while the transmission latency should be minimized, more attempts for accessing the opportunistic links can be made if a larger latency is allowed, which improves the error rate performance of the end-to-end transmission. By theoretically analyzing the error rate performance and erasure statistics, we propose a design guideline to determine the waiting period as the limit of the transmission latency. This designed waiting period not only preserves the diversity gained by the PTC but also provides a low transmission latency, resulting in a good balance of the reliability-latency trade-off of the end-to-end PTC transmission in CRAHNs.

    原文英語
    主出版物標題2014 IEEE Global Communications Conference, GLOBECOM 2014
    發行者Institute of Electrical and Electronics Engineers Inc.
    頁面1084-1089
    頁數6
    ISBN(電子)9781479935116
    DOIs
    出版狀態已發佈 - 2014 二月 9
    事件2014 IEEE Global Communications Conference, GLOBECOM 2014 - Austin, 美国
    持續時間: 2014 十二月 82014 十二月 12

    出版系列

    名字2014 IEEE Global Communications Conference, GLOBECOM 2014

    會議

    會議2014 IEEE Global Communications Conference, GLOBECOM 2014
    國家美国
    城市Austin
    期間2014/12/082014/12/12

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Networks and Communications
    • Communication

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