A MAC protocol for multihop RP-CDMA ad hoc wireless networks

Todd Mortimer, Janelle Harms
2012 2012 IEEE International Conference on Communications (ICC)  
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
more » ... 02.11 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. Foremost I would like to thank Dr. Janelle Harms for her guidance and patience, particularly when I was indulging my impulses. Thanks for letting me disappear into the MAC layer -I know we started out up higher. I would also like to thank Dr. Christian Schlegel for his feedback and suggestions as I recast RP-CDMA for my purposes. My conversations with Dr. Ivan Fair and Majid Ghanbarinejad were invaluable for understanding what's actually going on in a radio, and I am grateful for their time and assistance. Of course, I must also thank my wife, Erin, whose endless support in everything outside academics has made the academics themselves so much more manageable. Finally, I would like to thank the Department of National Defence and the Canadian Forces, whose sponsorship has made all of this possible. I hope the investment in me proves fruitful when I return to service.
doi:10.1109/icc.2012.6364359 dblp:conf/icc/MortimerH12 fatcat:uhqcdd63dfeghdty3cjzai3j4i