MAC protocols for ultra-wideband (UWB) wireless networks: impact of channel acquisition time

Jin Ding; Li Zhao; Sirisha R. Medidi; Krishna M. Sivalingam

doi:10.1117/12.455471

12 November 2002 MAC protocols for ultra-wide-band (UWB) wireless networks: impact of channel acquisition time

Jin Ding, Li Zhao, Sirisha R. Medidi, Krishna M. Sivalingam

Proceedings Volume 4869, Emerging Technologies for Future Generation Wireless Communications; (2002) https://doi.org/10.1117/12.455471
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States

Abstract

The upcoming Ultra-wide-band (UWB) radio technology holds great promise for revolutionizing wireless communications. UWB radios transmit using precise, very short (e.g. picosecond) impulses spread over a very large bandwidth (up to a few Ghz). The significant advantages of this technology are low-power operation, mitigated multi-path fading effects, high bit-rates and unique precise position/timing location ability. However, one of the drawbacks of this technology, in its current state, is the high channel acquisition time, i.e. the time for a transmitter and receiver to achieve bit synchronization. This tends to be quite high, of the order of a few milli-seconds. Hence, it is important for current medium access control (MAC) protocol design to consider the impact of acquisition time. In this paper, we study the performance of two standard MAC protocols - the distributed CSMA/CA protocol and the centralized TDM protocol in the context of UWB wireless local area networks. We study effects of varying packet frame sizes and packet arrival rates and present a quantification of the impact of acquisition time on overall performance.

Citation Download Citation

Jin Ding, Li Zhao, Sirisha R. Medidi, and Krishna M. Sivalingam "MAC protocols for ultra-wide-band (UWB) wireless networks: impact of channel acquisition time", Proc. SPIE 4869, Emerging Technologies for Future Generation Wireless Communications, (12 November 2002); https://doi.org/10.1117/12.455471

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