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In civil engineering, ground penetrating radar is widely used to assess the roadway structures. This study evaluates the influence of interface roughness. A modified estimation of signal parameters by rotational invariance techniques algorithm is proposed with a spectral smoothing technique for efficiently estimating the time delay, the permittivity of the layers and the interface roughness. To reduce...
This paper proposes an analytical expression of the PSD at the output of a power amplifier in the case of a multicarrier signal. The amplifier is characterized by a polynomial model and is supposed to be memoryless. This expression is validated by experimental measurements.
The purpose of this paper is to evaluate the spectral regrowth at the output of a power amplifier due to the nonlinearities of this component. An analytical expression of the power spectral density of the signal at the power amplifier output, corresponding to the general case of a multicarrier input signal of winite duration, is derived. From this equation, we can easily find the close form of the...
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