This paper considers the problem of optimal filtering for several channels of observations occurring at different sampling rates. The problem is formulated in general terms with arbitrary sampling rates for the observations. The set of observation sequences (channels) are jointly cyclostationary and the resulting optimal filters are linear and periodically timevarying (LPTV). A formula for the ...

Decimator is an important sampling device used for multi-rate signal processing in wireless communication systems. In this paper optimized decimator has been presented to improve the implementation complexity. The proposed decimator is implemented using Matlab as standard FIR, Half Band FIR and Nyquist FIR by using the multistage design techniques. The performance of different decimator designs...

This contribution deals with a fully digital multirate radio receiver suitable for vehicular applications. Timing correction and sample rate conversion are performed by a polynomial interpolator. Three different receiver configurations are considered in terms of computational complexity and BER performance. Careful selection of the intermediate frequency turns out to play a crucial role. System...

Haptic interaction is an increasingly common form of interaction in virtual environment (VE) simulations. This medium introduces some new challenges. In this paper we study the problem arising from the difference between the sampling rate requirements of haptic interfaces and the signi cantly lower update rates of the physical models being manipulated. We propose a multirate simulation approach...

In this paper, an approach is proposed to the fault detection in multirate sampled-data (MSD) systems with multiple time-delays in both input and output channels. The background of our study is the increasing demands for fault detection in complex, distributed process control systems, where the plant, controllers, sensors and actuators are networked by standardized bus systems. The core of the ...

In this paper, novel multirate controllers are proposed for digital control systems, where it is restricted that the sampling period of plant output is comparatively longer than the control period of plant input. The proposed controllers can assure perfect disturbance rejection at M intersample points in the steady state. Moreover, the novel scheme of repetitive control is proposed based on the...

Finite Impulse Response (FIR) filter model emulates the Inter Symbol Interference (ISI) in a wireless communication channel. An equalizer, typically an Infinite (IIR) filter, behaves as inverse to FIR remove effects of ISI. IIR filters are generally avoided due tractability issues, and with adaptive signal processing algorithm minimize error ISI, is deployed at receiver. However, observed quick...

A state-space solution to the H 1 control problem for periodic multirate systems is presented. The solution is based on the lifting method, where an equivalent time-invariant system description is derived for the original periodic multirate problem. The H 1-optimal controller for the multirate system is expressed in terms of two algebraic Riccati equations. The so-called causality constraints a...