Orthogonal time hopping multiple access for UWB impulse radio communications

Chang Yong Jung, Jo Woon Chong, Young Jun Hong, Bang Chul Jung, Dan Keun Sung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Recently, UWB technologies have been Introduced for low rate wireless personal area networks (LR-WPANs). Since the energy level of the UWB impulse radio signals is very low, it is very hard to apply them to a carrier sensing multiple access with collision avoidance (CSMA/CA) scheme, which was adopted as the MAC protocol in IEEE 802.15.4 standard. In this paper, we propose an orthogonal time hopping multiple access (OTHMA) as a multiple access scheme for UWB impulse radio communications, and compare the MAC performance of the proposed scheme with that of CSMA/CA in terms of throughput, success probability, average delay, and user utilization. Simulation results show that the proposed scheme performs better than CSMA/CA as the number of users increases. Therefore, OTHMA can be applied as a multiple access scheme for low power, large scale, and low activity networks in UWB impulse radio communications.

Original languageEnglish
Title of host publication2005 Asia-Pacific Conference on Communications
Number of pages5
StatePublished - 2005
Event2005 Asia-Pacific Conference on Communications - Perth, Western Australia, Australia
Duration: Oct 3 2005Oct 5 2005

Publication series

Name2005 Asia-Pacific Conference on Communications


Conference2005 Asia-Pacific Conference on Communications
CityPerth, Western Australia


  • IEEE 802.15.4 (LR-WPAN)
  • Multiple access
  • Statistical multiplexing
  • UWB


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