Performance Evaluation of RAKE Receiver for UWB Systems using Measured Channels in Industrial Environments

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Muhammad Gufran Khan, Jörgen Nordberg, Abbas Mohammed, Ingvar Claesson
Title: Performance Evaluation of RAKE Receiver for UWB Systems using Measured Channels in Industrial Environments
Conference name: International conference on wirless broadband and ultrawideband systems (AusWireless'06)
Year: 2006
City: Sydney, Australia
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: mgk@bth.se
Language: English
Abstract: The industrial environments are an important scenario for ultra wideband (UWB) communication systems. However, due to large number of metallic scatterers in the surroundings, the multipath offered by UWB channels is dense with significant energy. In this paper, the performance of RAKE receivers operating in a non line-of-sight (NLOS) scenario in these environments is evaluated. The channels used for the evaluation are measured in a medium-sized industrial environment. In addition, a standard IEEE 802.15.4a channel model is used for comparison with the results of the measured data. The performance of partial RAKE (PRake) and selective RAKE (SRake)is evaluated in terms of uncoded bit-error-rate (BER) using
different number of fingers. The performance of maximal ratio combining (MRC) and equal gain combining (EGC) is compared for the RAKE receiver assuming perfect knowledge of the channel state. Finally, based on the simulation results, conclusions are
drawn considering the performance and complexity issues for system design in these environments.
Subject: Telecommunications\General
Signal Processing\General
Keywords: UWB, RAKE receiver
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