NDLI: Performance evaluation of T-transform based OFDM in underwater acoustic communications

Content Provider	IEEE Xplore Digital Library
Author	Hengda Ding Neasham, J.A. Boussakta, S. Tsimenidis, C.C.
Copyright Year	2015
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK (Hengda Ding; Neasham, J.A.; Boussakta, S.; Tsimenidis, C.C.)
Abstract	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.
Starting Page	1
Ending Page	7
File Size	644335
Page Count	7
File Format	PDF
e-ISBN	9781479987368
DOI	10.1109/OCEANS-Genova.2015.7271510
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Discrete cosine transforms Channel estimation Bit error rate Doppler effect Receivers Doppler estimation and compensation Orthogonal frequency division multiplexing (OFDM) T-transform channel estimation bit interleaved coded modulation with iterative decoding (BICM-ID)
Content Type	Text
Resource Type	Article

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