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The capacity of asynchronous M-ary time hopping PPM UWB multiple access communication systems

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4 Author(s)
R. Pasand ; Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada ; S. Khaleshosseini ; J. Nielsen ; A. Sesay

Scholtz in (Proc. Military Comms. Conf., vol.2, p.447-450, 1993) introduced an ultra-wide bandwidth (UWB) time-hopping spread-spectrum code division multiple-access system employing a binary PPM signaling with performance analysis based on multiple-access interference represented by a Gaussian process. In this paper, the symbol error rate and the capacity of asynchronous M-ary PPM UWB are evaluated with a more precise statistical analysis of the multiuser interference which avoids the Gaussian approximation. It is shown that there is a significant error in using the Gaussian approximation as it over estimates the capacity of the M-ary PPM modulation.

Published in:

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th  (Volume:7 )

Date of Conference:

26-29 Sept. 2004