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Telecommunication Systems
Published in: Telecommunication Systems 2/2013

01-06-2013

Performance of multiuser detectors based on EM-like method for ultra-wideband communications systems in multipath fading channel

Authors: Ho-Lung Hung, Yung-Fa Huang

Published in: Telecommunication Systems | Issue 2/2013

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Abstract

An adaptive multiuser detector (MUD) is proposed for direct-sequence ultra-wideband (DS-UWB) multiple access communication systems to suppress both multiple access interference (MAI) and inter-symbol interference (ISI). In this contribution, considering the MUD from a combination viewpoint, we proposed a MUD based on electromagnetism-like (EM) method, which applied the concept of EM search to Hopfield neural network (EMHNN) for solving optimization problems. We analyze the performance of the EMHNN MUD in multipath fading channel, and compare it with the optimum detector and several suboptimum schemes such as conventional, decorrelator detector (DD), minimum-mean-squared error (MMSE) and HNN MUD. Simulation results will demonstrate that the proposed EMHNN MUD, which alleviates the detrimental effects of the MAI problem, can significantly improve the system performance.
previous article Joint subcarrier and power allocation for downlink cellular OFDMA systems by intercell interference limitation
next article A WLAN design problem with known mobile device locations: a global optimization approach

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Metadata
Title
Performance of multiuser detectors based on EM-like method for ultra-wideband communications systems in multipath fading channel
Authors
Ho-Lung Hung
Yung-Fa Huang
Publication date
01-06-2013
Publisher
Springer US
Published in
Telecommunication Systems / Issue 2/2013
Print ISSN: 1018-4864
Electronic ISSN: 1572-9451
DOI
https://doi.org/10.1007/s11235-013-9694-1

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