A systematic evaluation procedure for the choice of sampling rate and anti-alias filter in sampled-data control is presented. It is based on a multi criteria H∞ optimization procedure, where sampled-data measures are introduced to capture the intersample behavior. The optimization scheme is based on linear matrix inequalities (LMIs) formulated in the delta operator, and the result is a low orde...

Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis. To do this, various frequency estimation methods such as MUSIC and ESPRIT can be adopt...

Uniform rectilinear array is commonly used to explain the correspondence relationship between spatial sampling and time sampling, while the characteristics of the spatial sampling is much unfamiliar than rectilinear array for the widely used circular array. In this paper, we pointed out that the circular array sampling sequence has the characteristics of the nonlinear frequency modulation (FM) ...

H. Aboushady, Y. Dumonteix, M. M. Louërat and H. Mehrez Université Paris VI, Laboratoire LIP6/ASIM 4, Place Jussieu, 75252 Paris Cedex 05, France Email: [email protected] , [email protected] Abstract—A power efficient multi-rate multi-stage Comb decimation filter for mono-bit and multi-bit A/D converters is presented. Polyphase decomposition in all stages, with high decimation fa...

A software radio receiver is one which is tuned to receive a transmitted signal on multiple communication standards through software rather than hardware. To incorporate multi-standard radio communications an intermediate frequency of high ranges is used. Such high intermediate frequencies when sampled with Nyquist rate gets oversampled due to the phenomenon of Band Pass sampling depending on t...

The project New Techniques in Time-Frequency Analysis: Adaptive Band, Ultra-Wide Band and Multi-Rate Signal Processing led to the development of new techniques and theories in the analysis of signals. These techniques and theories were extensions of known techniques – sampling, Fourier, Gabor and wavelet analysis, and new approaches to analysis – using combinations of analysis, geometry, group ...

This paper studies the parameter estimation of a general multi-input, multi-output multi-rate system in the frequency-domain. Two methods, named dividing to subsystems and input extension, are introduced for dealing with multi-rate systems and the later method is easily used to convert a multi-input, multi-output multi-rate system to several sub-problems with fast input updating and slow output...

Decimator is an important sampling device used for multi-rate signal processing in wireless communication systems. Multirate systems have traditionally played the important role in compression for contemporary communication application.In this paper it demonstrated that a multistage implementation of sampling rate conversion often provides for a more efficient realization, especially when filte...