New blind, adaptive channel shortening TEQ for multicarrier modulation systems

Boubakeur Berriah; Merahi Bouziani; Sid Ahmed Elahmar

New blind, adaptive channel shortening TEQ for multicarrier modulation systems

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Author(s): Boubakeur Berriah ¹ ; Merahi Bouziani ¹ ; Sid Ahmed Elahmar ¹
- Affiliations: 1: Telecommunications and Digital Signal Processing Laboratory, Djillali Liabès University of Sidi Bel Abbès, BP 89, 22000 Sidi Bel Abbes, Algeria
Source: Volume 8, Issue 2, 23 January 2014, p. 210 – 216
DOI: 10.1049/iet-com.2013.0147 , Print ISSN 1751-8628, Online ISSN 1751-8636

Received 19/09/2012, Accepted 09/09/2013, Revised 06/09/2013, Published 05/12/2013

Channel shortening is a necessary equalisation for mitigation of inter-symbol and inter-carrier interferences in multicarrier transceivers. Its purpose is to reduce the length of the impulse response of the channel. In this study, the authors present a new algorithm with low complexity for updating the coefficients of time-domain equalisation (TEQ) to shorten the effective channel in multicarrier transmission systems. Based on the orthogonality between adjacent subcarriers and cyclic prefix, a new cost function is defined to create a blind and adaptive TEQ. Simulation results are provided to demonstrate the performance of the algorithm.

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