Title :
Multiple-Access Performance of Transmitted Reference UWB Communications with M-ary PPM
Author :
Li, Liping ; Townsend, J. Keith ; Ulman, Robert J.
Author_Institution :
Dept. of Electr. & Comput. Eng., NC State Univ., Raleigh, NC
Abstract :
To increase the data rate for transmitted reference (TR) ultra-wideband (UWB) systems, M-ary pulse position modulation (PPM) is used in this paper. The multiple-access performance of such systems is investigated in a multipath environment. A new method to derive the variance of the Gaussian random variable resulted from multiple-access interference (MAI) is developed using the power delay profile (PDP) of the channel. By applying an upper bound, a general relationship is reached for system parameters such as the number of supported users, the bit error probability, the required Eb/No, and the data rate. Tradeoffs between system parameters are discussed as well in this paper.
Keywords :
Gaussian processes; error statistics; pulse position modulation; ultra wideband communication; Gaussian random variable; M-ary PPM; bit error probability; multipath environment; multiple-access interference; power delay profile; pulse position modulation; transmitted reference UWB communications; ultra-wideband systems; Delay; Fading; Military computing; Multipath channels; Multiple access interference; Pulse modulation; RAKE receivers; Random variables; Ultra wideband communication; Ultra wideband technology;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.752
