Path specific Doppler compensation in time-reversal communications | Zendy

S. M. Jesus | Zendy; Salman I. Siddiqui | Zendy; António Silva | Zendy

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Path specific Doppler compensation in time-reversal communications

Author(s) -

S. M. Jesus,

Salman I. Siddiqui,

António Silva

Publication year - 2015

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4915005

Subject(s) - compensation (psychology) , doppler effect , channel (broadcasting) , computer science , signal (programming language) , interference (communication) , path (computing) , acoustics , angle of arrival , arrival time , algorithm , telecommunications , physics , psychology , astronomy , transport engineering , psychoanalysis , antenna (radio) , engineering , programming language

Passive time reversal (pTR) is a low complexity receiver scheme that uses multichannel probing for time signal refocusing, thus reducing time spreading and improving inter-symbol interference. Recognizing that signals traveling through different paths are subject to arrival-angle-related Doppler displacements, this letter proposes a further improvement to pTR that applies correcting frequency shifts optimized for beams formed along each specific path arrival angle. The proposed channel equalizer is tested with real data, and the results show that the proposed approach outperforms both pTR and the modified pTR channel combiners providing an MSE gain of 4.9 and 4.2 dB, respectively.

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