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DFE for frequency selective PNC channels using AF

Lookup NU author(s): Alaa Ahmed, Professor Harris Tsimenidis, Professor Jeffrey Neasham, Professor Bayan Sharif


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High speed transmission of information suffers inevitably by intersymbol interference (ISI) induced by multipath propagation over frequency selective channels. ISI has been a major obstacle preventing the successful implementation of physical layer network coding (PLNC) systems in these environments. Another major obstacle is the high computational complexity of existing algorithms dealing with ISI, which is a determining factor in the design of relay nodes. In this paper, we propose a novel and computationally efficient decision feedback equalizer structure that is utilized at the end node and in conjunction with a simple amplify and forward (AF) technique employed at the relay. We derive the optimal equations for the decision feedback equalizer (DFE) coefficients and evaluate the end-to-end bit error rate performance in frequency selective channels, and provide both analytical and numerical simulation results that demonstrate the feasibility of the proposed approach under realistic channel conditions. The obtained results show that E2E performance is dominated by the channel with most severe frequency selectivity.

Publication metadata

Author(s): Ahmed AH, Tsimenidis CC, Neasham J, Sharif BS

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Wireless and Mobile Computing, Networking and Communications (WiMob), 2015 IEEE 11th International Conference on

Year of Conference: 2015

Pages: 833-838

Print publication date: 01/01/2015

Online publication date: 07/12/2015

Acceptance date: 01/01/1900

Publisher: IEEE


DOI: 10.1109/WiMOB.2015.7348048

Library holdings: Search Newcastle University Library for this item

ISBN: 9781467377010