Impact of TH-UWB interference on MB-OFDM UWB systems: interference modeling and performance analysis
| Autor: | Farshad Sarabchi, Chahe Nerguizian |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Computer Networks and Communications
Computer science Orthogonal frequency-division multiplexing Gaussian 020302 automobile design & engineering 020206 networking & telecommunications Context (language use) 02 engineering and technology Interference (wave propagation) Multiplexing symbols.namesake 0203 mechanical engineering Interference (communication) Statistics 0202 electrical engineering electronic engineering information engineering symbols Electrical and Electronic Engineering Algorithm Computer Science::Information Theory Information Systems Communication channel |
| Zdroj: | Wireless Communications and Mobile Computing. 16:960-976 |
| ISSN: | 1530-8669 |
| DOI: | 10.1002/wcm.2580 |
| Popis: | In this paper, the coexistence issue between multiband-orthogonal frequency-division multiplexing MB-OFDM and time-hopping ultra-wideband TH-UWB networks is widely analyzed. For this purpose, to study and model the TH-UWB interference, an analytical framework which describes key features of the interference distribution is provided. The interference distribution is studied in the context of TH-UWB's signaling parameters. Our results reveal that the interference distribution highly depends on its time-hopping parameters. Therefore, choosing proper time-hopping parameters leads to less destructive interferences. The Generalized Gaussian and the Symmetric-α-Stable SαS distributions are used to model the interference-plus-noise signal. The maximum likelihood and a characteristic function-based regression-type methods are adopted to estimate parameters of Generalized Gaussian and SαS distributions, respectively. Moreover, the interference channel effects on the impulsive behavior of the TH-UWB signal is studied. It is shown that impulsive behavior of the faded interference signals highly depends on the channel time-dispersiveness. Furthermore, an exact performance of a multiband-orthogonal frequency-division multiplexing system impaired by a TH-UWB system is derived. The comparison of the analytical performance, the empirical simulation, and the approximation results show that both approximation methods are valid for low interference-to-noise-ratio, while SαS provides a more accurate approximation for high interference-to-noise-ratio. Copyright © 2015John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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