Performance indicator for DMT systems with non perfect channel estimation

• Published in: European transactions on telecommunications Vol. 17; no. 5; pp. 591 - 597
• Main Authors: Bueche, D., Corlay, P., Gazalet, M. G., Coudoux, F. X., Slachciak, M.
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.09.2006; Wiley
• Subjects: Applied sciences; Detection, estimation, filtering, equalization, prediction; Engineering Sciences; Exact sciences and technology; Information, signal and communications theory; Modulation, demodulation; Signal and communications theory; Signal, noise; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Additive noise; Performance evaluation; Estimation error; Parameter estimation; Error estimation; Bit error rate; Discrete system; Multitone system; Equalization; Mean estimation; Mean square error; Noise level; Multicarrier modulation; Simulation; Channel estimation
• ISSN: 1124-318X; 1541-8251
• DOI: 10.1002/ett.1113

In this letter, we analyse the bit error rate (BER) of a discrete multitone modulation system considering the channel estimation error for the frequency equalisation. After having established an approximate relation for the BER, we propose a simple performance indicator, which accounts for the channel estimation error, the power emitted and the noise level. In order to check the validity of the indicator, simulation has been performed. The results prove that it is more adapted to discrete multi‐tone modulation (DMT) systems than the classical mean squared channel estimation error (MSE), above all when the channel additive noise is coloured. Copyright © 2006 AEIT