NDLI: Underwater communications for moving source using geometry-adapted time reversal and DFE: UAN10 data

Content Provider	IEEE Xplore Digital Library
Author	Vilaipornsawai, U. Silva, A.J. Jesus, S.M.
Copyright Year	2011
Description	Author affiliation: Instituto de Sistemas e Robótica, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal (Vilaipornsawai, U.; Silva, A.J.; Jesus, S.M.)
Abstract	This work presents an improved version of our previously proposed technique, i.e. the combined geometry-adapted passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) for underwater communications between a moving source and a fixed receiver array (implying a range change) [1]. Since the geometry change can be compensated by employing a proper frequency shift on the probe Impulse Response (IR) in the pTR processing, the geometry-adapted pTR is called Frequency Shift pTR (FSpTR). A slot-based FSpTR processing is performed, where frequency shifts applied to the IRs can change over slots to compensate for geometry changes over time. The FSpTR output is the concatenation of slots of the processed signals. With different frequency shifts for consecutive slots, there are phase jumps in the FSpTR output. In this work, we propose a new phase-jump correction method, which is stable with respect to IR time-window selection. After the phase correction, a standard phase synchronization method and the DFE can then be applied subsequently to the FSpTR processing to further improve the performance. The developed technique is named FSpTR-DFE. Experimental data collected off Pianosa island, Italy in September 2010 for Underwater Acoustic Network (UAN) project, is called UAN10 data and used in the evaluation of the FSpTR-DFE performance. An information rate up to 2400 bps and BPSK signaling are considered. The results show that the FSpTR-DFE technique outperforms the FSpTR as well as the technique combining the conventional pTR with DFE when there exist strong range changes.
Starting Page	1
Ending Page	7
File Size	1082507
Page Count	7
File Format	PDF
ISBN	9781457700866
e-ISBN	9781457700880
DOI	10.1109/Oceans-Spain.2011.6003513
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision feedback equalizers Binary phase shift keying Bit error rate Principal component analysis Electrostatic discharge
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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