Title :
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
fDate :
29 Nov.-3 Dec. 2004
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;
Conference_Titel :
Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Print_ISBN :
0-7803-8794-5
DOI :
10.1109/GLOCOM.2004.1377948
