Multi-user capacity of M-ary PPM ultra-wideband communications

Author

Li Zhao ; Haimovich, A.M.

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

fYear

2002

Firstpage

175

Lastpage

179

Abstract

We study the information theoretic capacity of M-ary pulse position modulation (PPM) ultra-wideband (UWB) communications for the multi-user channels. Under certain assumptions, the multiple-access interference component at the receiver is modeled as Gaussian. An expression for the signal-to-noise ratio is developed for UWB utilizing rectangular pulses. The information theoretic capacity of the UWB system is studied as a function of number of users. A closed form expression and a lower bound are found for the case of binary PPM. An upper bound on the aggregate capacity is found for the case of large number of users.

Keywords

broadband networks; channel capacity; information theory; multiuser channels; pulse position modulation; radio networks; radiofrequency interference; Gaussian interference; M-ary PPM ultra-wideband communications; aggregate capacity; binary PPM; channel capacity; closed form expression; information theoretic capacity; lower bound; multi-user channels; multiple-access interference; multiuser capacity; receiver; rectangular pulses; upper bound; AWGN; Additive white noise; Bandwidth; Gaussian noise; Multiple access interference; Pulse modulation; Signal to noise ratio; Ultra wideband communication; Ultra wideband technology; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra Wideband Systems and Technologies, 2002. Digest of Papers. 2002 IEEE Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

0-7803-7496-7

Type

conf

DOI

10.1109/UWBST.2002.1006341

Filename

1006341