Capacity of DS-CDMA versus TH-PPM for Multi-User Ultra-Wideband Systems

Author

Abdel-Hafez, Mohammed ; Alagoz, Fatih

Author_Institution

Dept. of Electr. Eng., United Arab Emirates Univ., Al-Ain

fYear

2006

fDate

11-14 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

This paper focuses on the channel capacity of direct sequence code division multiple access (DS-CDMA) and time-hopping pulse position modulation (TH-PPM) for ultra-wide band (UWB) communication systems over multiple-access and additive white Gaussian noise (AWGN) channel. Based on Gaussian approximation for the multiple access interference, an expression of the signal-to-noise ratio is derived for the UWB system using 2nd derivative Gaussian pulse. The information theoretic capacity of the UWB system is expressed as a function of system parameters. Analytical and simulation results show that the capacity of DS-CDMA outperform the capacity of TH-PPM UWB system for high demand environment

Keywords

AWGN channels; channel capacity; code division multiple access; pulse modulation; spread spectrum communication; ultra wideband communication; 2nd derivative Gaussian pulse; DS-CDMA capacity; Gaussian approximation; TH-PPM capacity; additive white Gaussian noise channel; channel capacity; direct sequence code division multiple access; information theoretic capacity; multi-user ultra-wideband systems; multiple access interference; signal-to-noise ratio; time-hopping pulse position modulation; ultra-wide band communication systems; AWGN; Additive white noise; Channel capacity; Communication systems; Direct-sequence code-division multiple access; Gaussian approximation; Modulation coding; Multiaccess communication; Pulse modulation; Ultra wideband technology; DS-CDMA; FCC; Gaussian Pulse; Information Capacity; Multiple-Access; TH-PPM; Ultra wideband communications (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Conference_Location

Helsinki

Print_ISBN

1-4244-0329-4

Electronic_ISBN

1-4244-0330-8

Type

conf

DOI

10.1109/PIMRC.2006.254420

Filename

4022713