Title :
Energy efficient methods of increasing data rate for ultrawideband (UWB) communications systems
Author :
August, Nathaniel J. ; Chung, Woo Cheol ; Ha, Dong Sam
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA, USA
Abstract :
This paper investigates energy efficient methods of increasing data rate for m-ary pulse position modulation (PPM) of impulse-based ultra wideband (UWB) systems in a multipath environment. The data rate of m-ary PPM can be increased by decreasing the pulse repetition interval (PRI) and/or increasing the number of bits transmitted per symbol. However, increasing the data rate beyond a certain limit degrades energy efficiency in a multipath environment. We investigate the relationship between data rate and energy efficiency and seek suitable bounds on the number of bits per symbol and the PRI.
Keywords :
broadband networks; energy conservation; fading channels; intersymbol interference; multipath channels; pulse position modulation; radiofrequency interference; UWB communications systems; data rate; energy efficient methods; intersymbol interference; intrasymbol interference; m-ary pulse position modulation; multipath fading; pulse repetition interval; ultrawideband; AWGN; Bandwidth; Energy efficiency; FCC; Fading; Interference; Pulse modulation; Pulse shaping methods; Shape; Ultra wideband technology;
Conference_Titel :
Ultra Wideband Systems and Technologies, 2003 IEEE Conference on
Print_ISBN :
0-7803-8187-4
DOI :
10.1109/UWBST.2003.1267848
