Author(s):
Jesus, S.M. 
; Ijaz, S. ; Silva, A.
Date: 2014
Persistent ID: http://hdl.handle.net/10400.1/5168
Origin: Sapientia - Universidade do Algarve
Document details
Accounting for source depth variations in time-reversal communications
Description
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 travelling 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 path arrival angle. The proposed 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 dB and 4.2 dB, respectively.
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 travelling 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 path arrival angle. The proposed 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 dB and 4.2 dB, respectively.
Document Type
Article
Language English
Language English
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