An approach to Infinite Impulse Response (IIR) filtering based on genetic algorithms is detailed. This method addresses some of the difficulties encountered with existing methods of adaptation, providing guaranteed filter stability and the ability to search multi-modal error surfaces. Simulation results are presented demonstrating the suitability of this approach to the problem of IIR system id...

This paper presents a real-time, TMS320C40 DSP based implementation of a direct-form adaptive infinite impulse response(IIR) filter using the Least-meansquare(LMS) algorithm. Stability monitoring of the IIR filter during adaptation is discussed. A detailed description of the implementation and hardware platform is also provided.

Radio Frequency Interferences (RFI), such as strong Continuous Wave (CWI), can influence the Quality of Service (QoS) communications, increasing Bit Error Rate (BER) and decreasing Signal-to-Noise Ratio (SNR) in any wireless transmission, including a Digital Video Broadcasting (DVB-S2) receiver. Therefore, this paper presents an algorithm for detecting mitigating Multi-tone Interference (MCWI) ...

A new class of two-channel IIR/FIR filter banks was introduced in [1] with half-band IIR analysis filters and FIR synthesis filters. This type of filter bank features very lowcomplexity analysis filters and simultaneously a low overall complexity. In this paper, we consider finite-wordlength effects of these filter banks.

A novel approach is proposed to blindly identify an unknown IIR system. The methods presented are linear in parameters of the unknown system so that many standard recursive algorithms can readily apply. It is also shown in the paper that under a generic condition, any finite order IIR system is identifiable provided the over-sampling ratio is high enough.

This study was designed to assess unique baseline factors associated with subsequent hospitalizations in a cohort of outpatients with cirrhosis. A cohort of 193 patients with cirrhosis was recruited from an outpatient liver disease clinic at a single, tertiary medical center. Comorbidities, prescription medications, liver disease symptoms and severity, and psychiatric and pain symptoms were ass...

Neurodegeneration is a hallmark of the human disease ataxia-telangiectasia (A-T) that is caused by mutation of the A-T mutated (ATM) gene. We have analyzed Drosophila melanogaster ATM mutants to determine the molecular mechanisms underlying neurodegeneration in A-T. Previously, we found that ATM mutants upregulate the expression of innate immune response (IIR) genes and undergo neurodegeneratio...

An analysis of the local convergence speed of constant gain algorithms for direct form IIR adaptive ̄lters is initially presented, showing the adverse e®ects that result from the proximity of the poles of the modelled system to the unit circle and, for complex poles, to the real axis. A global analysis of the reduced error surface in these cases is also presented, which shows that, away from th...

IMPULSE RESPONSE FILTERING Emrah Acar Dept. of Electrical and Computer Engineering Carnegie Mellon University Pittsburgh, PA 15213 [email protected] Orhan Ar kan Dept. of Electrical Engineering Bilkent University Ankara, Turkey 06533 [email protected] ABSTRACT To take advantage of fast converging multi{channel recursive least squares algorithms, we propose an adaptive IIR system structu...