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A Cross-Layer Approach to Multi-Hop Networking with Cognitive Radios

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  • معلومة اضافية
    • Publisher Information:
      2008-11
    • نبذة مختصرة :
      Cognitive radio (CR) is an enabling technology for efficient use of available spectrum and promises unprecedented flexibility in multi-hop wireless networking. This paper explores networking related issues associated with CRs. Specifically, we consider how to maximize the rates of a set of user communication sessions in a multi-hop CR-based wireless network. Due to potential interference at the physical layer, we find that it is essential to follow a cross-layer approach, with joint optimization at physical (power control), link (frequency band scheduling) and network (flow routing) layers. We give a mathematical characterization of this cross-layer optimization problem. We develop a centralized solution procedure based on the branchand- bound framework. Using numerical results, we demonstrate the efficacy of the solution procedure and offer quantitative understanding on the joint optimization at different layers.
      Presented at the IEEE Military Communications Conference (MILCOM) held in San Diego, CA on 17-19 November 2008. Published in the IEEE Military Communications Conference (MILCOM) Proceedings, p7, November 2008. The original document contains color images.
    • الموضوع:
      Radio Communications; COMMUNICATIONS NETWORKS; WIRELESS LINKS; EFFICIENCY; FREQUENCY BANDS; RADIOFREQUENCY; INTERFERENCE; COMMUNICATION AND RADIO SYSTEMS; RADIO EQUIPMENT; OPTIMIZATION; SIGNAL PROCESSING; COGNITIVE RADIO; MULTI-HOP WIRELESS NETWORK; Text
    • Availability:
      Open access content. Open access content
      Approved for public release; distribution is unlimited.
    • Note:
      text/html
      English
    • Other Numbers:
      DTICE ADA536059
      832106694
    • Contributing Source:
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.ocn832106694
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