A MAC Protocol for Multihop RP-CDMA Ad Hoc Wireless Networks

  • Author / Creator
    Mortimer, Richard T
  • RP-CDMA is a wireless multiple access technique that utilizes multiple spreading codes and a multiuser detector to enhance link reliability and performance. We propose a simple MAC protocol on top of the RP-CDMA Phy and apply it to the multihop ad hoc network model. In addition to a MAC, we propose two significant extensions to RP-CDMA aimed at improving throughput and reliability. We test our network device using the ns-3 network simulator and compare its performance to that of the well known 802.11 CSMA model. Our simulations confirm that RP-CDMA can substantially improve link reliability and network performance, but that a link level acknowledgement mechanism is required to ensure packet delivery across the network. We investigate a simple acknowledgement policy and conclude that it enables simultaneous high throughput and packet delivery while maintaining low latency.

  • Subjects / Keywords
  • Graduation date
    Fall 2012
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
  • Institution
    University of Alberta
  • Degree level
  • Department
  • Supervisor / co-supervisor and their department(s)
  • Examining committee members and their departments
    • Harms, Janelle (Computing Science)
    • Fair, Ivan (Electrical and Computer Engineering)
    • Nikolaidis, Ioanis (Computing Science)