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Journal of Electrical and Computer Engineering
Volume 2012, Article ID 452402, 9 pages
Research Article

Improved Maximum Likelihood S-FSK Receiver for PLC Modem in AMR

GRESCOM Research Laboratory, SUPCOM, University of Carthage, City of Communications Technologies, 2083 El Ghazala Ariana Tunis, Tunisia

Received 3 August 2012; Accepted 26 October 2012

Academic Editor: Justinian Anatory

Copyright © 2012 Mohamed Chaker Bali and Chiheb Rebai. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with an optimized software implementation of a narrowband power line modem. The modem is a node in automatic meter reading (AMR) system compliant to IEC 61334-5-1 profile and operates in the CENELEC-A band. Because of the hostile communication environments of power line channel, a new design approach is carried out for an S-FSK demodulator capable of providing lower bit error rate (BER) than standard specifications. The best compromise between efficiency and architecture complexity is investigated in this paper. Some implementation results are presented to show that a communication throughput of 9.6 kbps is reachable with the designed S-FSK modem.