Noncoherent Equalizer for DECT System

Examensarbete för masterexamen

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Type: Examensarbete för masterexamen
Master Thesis
Title: Noncoherent Equalizer for DECT System
Authors: Teng, Xiaoyu
Zhang, Weichao
Abstract: Digital European Cordless Telecommunication (DECT), as a standard for cordless indoor wireless communication in Europe, is widely used in hospitals, offices and factories. But its performance can be constrained by channel dispersion, and this can limit the use of DECT system in reflective environments. In this master thesis project, non-coherent equalization schemes are investigated. Different equalization algorithms are simulated in Matlab and a least mean square (LMS) algorithm based baseband equalizer is implemented in a field programmable gate array (FPGA). But this method is proved insufficient to solve the severe multipath fading problem. Another type of equalizer called passband equalizer is stated afterwards, and a required bit error rate (BER) can be achieved in multipath fading channels up to 500 ns delay spread. This project includes both simulation and hardware implementation. In this thesis, simulations of two types of equalization methods (LMS baseband and passband equalizer) and implementation of the LMS baseband equalizer in FPGA are introduced. The challenge of future work and its possible refinement are also analyzed.
Keywords: Datorteknik;Computer Engineering
Issue Date: 2010
Publisher: Chalmers tekniska högskola / Institutionen för data- och informationsteknik (Chalmers)
Chalmers University of Technology / Department of Computer Science and Engineering (Chalmers)
Collection:Examensarbeten för masterexamen // Master Theses

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