Lookup NU author(s): Hengda Ding,
Professor Said Boussakta,
Dr Charalampos Tsimenidis
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This paper dresses the implementation of an orthogonal frequency division multiplexing (OFDM) based multicarrier UWA communication system adopting a novel transform called T-transform. It combines the Walsh-Hadamard transform (WHT) and the discrete Fourier transform (DFT) into a single fast orthogonal unitary transform which increases channel diversity order without sacrificing any throughput. The proposed system uses pilot subcarriers for channel estimation and bit-interleaved coded modulation with iterative decoding (BICM-ID) as forward error correction (FEC) code for better bust error correction. Performance of the T-transform is compared to discrete cosine transform (DCT) based OFDM systems and conventional OFDM systems. Both tank test results and sea trial results reveal that the proposed T-OFDM system achieves significant performance improvement over DCT based OFDM and conventional OFDM in a frequency selective fading channel.
Author(s): Ding HD, Neasham JA, Boussakta S, Tsimenidis CC
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: OCEANS 2015 - Genova
Year of Conference: 2015
Print publication date: 01/01/2015
Online publication date: 21/09/2015
Acceptance date: 01/01/1900
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