Time Reversal (TR) is a prefiltering scheme mostly analyzed in the context of centralized and synchronous IR-UWB networks, in order to leverage the trade-off between communication performance and device complexity, in particular in presence of multiuser interference. Several strong assumptions have been typically adopted in the analysis of TR, such as the absence of Inter-Symbol / Inter-Frame Interference (ISI/IFI) and multipath dispersion due to complex signal propagation. This work has the main goal of comparing the performance of TR-based systems with traditional non-prefiltered schemes, in the novel context of a distributed and uncoordinated IR-UWB network, under more realistic assumptions including the presence of ISI/IFI and multipath dispersion. Results show that, lack of power control and imperfect channel knowledge affect the performance of both non-prefiltered and TR systems; in these conditions, TR prefiltering still guarantees a performance improvement in sparse/low-loaded and overloaded network scenarios, while the opposite is true for less extreme scenarios, calling for the developement of an adaptive scheme that enables/disables TR prefiltering depending on network conditions.

Performance evaluation of non-prefiltering vs. time reversal prefiltering in distributed and uncoordinated IR-UWB ad-hoc networks / Caso, Giuseppe; DE NARDIS, Luca; Le, THI PHUONG MAI; Maschietti, Flavio; Fiorina, Jocelyn; DI BENEDETTO, Maria Gabriella. - In: MOBILE NETWORKS AND APPLICATIONS. - ISSN 1383-469X. - STAMPA. - 22:5(2017), pp. 796-805. [10.1007/s11036-017-0829-6]

Performance evaluation of non-prefiltering vs. time reversal prefiltering in distributed and uncoordinated IR-UWB ad-hoc networks

CASO, GIUSEPPE;DE NARDIS, LUCA;LE, THI PHUONG MAI;DI BENEDETTO, Maria Gabriella
2017

Abstract

Time Reversal (TR) is a prefiltering scheme mostly analyzed in the context of centralized and synchronous IR-UWB networks, in order to leverage the trade-off between communication performance and device complexity, in particular in presence of multiuser interference. Several strong assumptions have been typically adopted in the analysis of TR, such as the absence of Inter-Symbol / Inter-Frame Interference (ISI/IFI) and multipath dispersion due to complex signal propagation. This work has the main goal of comparing the performance of TR-based systems with traditional non-prefiltered schemes, in the novel context of a distributed and uncoordinated IR-UWB network, under more realistic assumptions including the presence of ISI/IFI and multipath dispersion. Results show that, lack of power control and imperfect channel knowledge affect the performance of both non-prefiltered and TR systems; in these conditions, TR prefiltering still guarantees a performance improvement in sparse/low-loaded and overloaded network scenarios, while the opposite is true for less extreme scenarios, calling for the developement of an adaptive scheme that enables/disables TR prefiltering depending on network conditions.
2017
ad-hoc distributed networks; inter-symbol interference; IR-UWB; multiuser interference; time hopping; time reversal; software; information systems; hardware and architecture; computer networks and communications
01 Pubblicazione su rivista::01a Articolo in rivista
Performance evaluation of non-prefiltering vs. time reversal prefiltering in distributed and uncoordinated IR-UWB ad-hoc networks / Caso, Giuseppe; DE NARDIS, Luca; Le, THI PHUONG MAI; Maschietti, Flavio; Fiorina, Jocelyn; DI BENEDETTO, Maria Gabriella. - In: MOBILE NETWORKS AND APPLICATIONS. - ISSN 1383-469X. - STAMPA. - 22:5(2017), pp. 796-805. [10.1007/s11036-017-0829-6]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/952699
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