Performance of DS/CDMA UWB communication systems in the presence of narrow-band interference and imperfect channel estimation

Author

Silva, Claudio R C M da ; Milstein, Laurence B.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

Volume

1

fYear

2004

fDate

29 Nov.-3 Dec. 2004

Firstpage

247

Abstract

This work considers the performance of a DS/CDMA system in the presence of narrow-band interference and imperfect channel estimation. A receiver based on MMSE channel estimation and maximum-likelihood data detection is assumed. An adaptive MMSE receiver, based on the LMS algorithm, is also explored. The performance of the DS/CDMA system is compared with that of a recently proposed UWB spectral-encoded system. The formulation and numerical results presented allow for a better understanding of the spectral overlay effects for UWB communication systems.

Keywords

channel estimation; code division multiple access; interference (signal); least mean squares methods; spread spectrum communication; ultra wideband communication; DS/CDMA system; LMS algorithm; UWB communication systems; UWB spectral-encoded system; adaptive MMSE receiver; imperfect channel estimation; maximum-likelihood data detection; narrow-band interference; spectral overlay effects; Channel estimation; Filters; Interference suppression; Least squares approximation; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Narrowband; Proposals; Ultra wideband communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE

Print_ISBN

0-7803-8794-5

Type

conf

DOI

10.1109/GLOCOM.2004.1377948

Filename

1377948