Title :
The capacity of asynchronous M-ary time hopping PPM UWB multiple access communication systems
Author :
Pasand, Reza ; Khaleshosseini, Saeed ; Nielsen, John ; Sesay, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
Abstract :
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.
Keywords :
channel capacity; code division multiple access; error statistics; interference (signal); multiuser channels; pulse position modulation; radio access networks; spread spectrum communication; statistical analysis; ultra wideband communication; CDMA; UWB channel capacity; asynchronous M-ary time hopping; binary PPM signaling; multiple access communication systems; multiple-access interference; multiuser interference; spread-spectrum code division multiple-access system; statistical analysis; symbol error rate; Bandwidth; Error analysis; Gaussian approximation; Gaussian processes; Multiaccess communication; Multiple access interference; Performance analysis; Signal processing; Spread spectrum communication; Statistical analysis;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1404993
