Focusing gain model of time reversed signals in dense multipath channels

Autor: Martine Lienard, I. Vin, Virginie Degardin, Pierre Degauque
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:
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