Title :
A low complexity MMSE-RAKE receiver in a realistic UWB channel and in the presence of NBI
Author :
Boubaker, N. ; Letaief, K.B.
Author_Institution :
Electr. & Electron. Eng. Dept., Hong Kong Univ. of Sci. & Technol., China
Abstract :
Ultra-wideband (UWB) radio systems have attracted a lot of attention during the last few years. These systems are very low transmission power and spread over a bandwidth of several gigahertz. The very low transmission power and the large bandwidth used, enable a UWB system to co-exist with other narrow band systems. Nevertheless, these narrow band systems may cause interference, which may jam the UWB receiver completely. This paper presents a novel narrow band interference suppression technique for UWB radio systems. It consists of selecting the first strongest multipath components and combining them using a RAKE receiver based on the minimum mean square error (MMSE) criterion. Simulation results reveal that this reduced complexity technique can almost completely eliminate the effect of narrow band interference.
Keywords :
broadband networks; interference suppression; least mean squares methods; multipath channels; radio receivers; radiofrequency interference; NBI; low complexity MMSE-RAKE receiver; minimum mean square error criterion; multipath components; narrow band interference suppression technique; realistic UWB channel; reduced complexity technique; ultra-wideband radio systems; Bandwidth; Degradation; Fading; Frequency; Interference suppression; Mean square error methods; Multipath channels; Narrowband; RAKE receivers; Ultra wideband technology;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200351
