Focusing gain model of time reversed signals in dense multipath channels
Autor: | Martine Lienard, I. Vin, Virginie Degardin, Pierre Degauque |
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Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF) |
Jazyk: | angličtina |
Rok vydání: | 2012 |
Předmět: |
Physics
Acoustics 020208 electrical & electronic engineering 020206 networking & telecommunications 02 engineering and technology Signal Delay spread Distribution function 0202 electrical engineering electronic engineering information engineering Electronic engineering Waveform Transient response Electrical and Electronic Engineering Multipath propagation Pulse-width modulation Computer Science::Information Theory Communication channel |
Zdroj: | IEEE Antennas and Wireless Propagation Letters IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, 2012, 11, pp.1064-1067. ⟨10.1109/LAWP.2012.2215002⟩ IEEE Antennas and Wireless Propagation Letters, 2012, 11, pp.1064-1067. ⟨10.1109/LAWP.2012.2215002⟩ |
ISSN: | 1536-1225 |
DOI: | 10.1109/LAWP.2012.2215002⟩ |
Popis: | The time reversal (TR) technique consists of transmitting in the channel a signal filtered by the time-reversed channel impulse response. To assess the performance of a TR system using impulse radio ultrawideband signals, one interesting parameter is the focusing gain defined as the ratio of the maxima in the time waveforms of the received signal with and without the time-reversal operation. We propose a heuristic approach to get an approximate analytical expression for the distribution function of this gain, as a function of the channel delay spread normalized to the pulse width and assuming a dense multipath environment. Predicted results are compared to experimental values obtained in reverberating chambers. |
Databáze: | OpenAIRE |
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