This paper studies the design of quadrature mirror lter (QMF) banks via frequency domain optimizations. A direct approach is adopted that gives the necessary and suucient condition for perfect reconstruction (PR). While analysis lter banks are designed to achieve frequency domain speciications required for subband coding, synthesis lter banks are designed to minimize the reconstruction error in...

The performance and complexity of blind algorithms in a digital receiver is dependent on the pre lter prior to discretization of the received continuous time signal and the sampling rate. This paper shows that symbol spaced blind equalization algorithms are in general sub-optimal, since a matched lter cannot be used. We show that, for fractionally spaced equalizers, the prelter can be a general...

Symmetric -Stable (S S) processes are used to model impulsive noise. Wiener lter theory is generally not meaningful in S S environments because the expectations may be unbounded. To develop a lter theory for linear nite impulse response systems with independent identically distributed S S inputs, we propose median orthogonality as a linear lter criterion, present a generalized Wiener-Hopf solut...

This paper introduces a new structure for stack lter-ing, where the lter adapts to the local characteristics encountered in data. Both supervised and unsupervised techniques for optimal design are investigated. We split the image into small regions and select the stack lter to process each region according to the spatial domain or threshold level domain characteristics of the input signal. This...

We detail the design of multiresolution analog lter banks, linear models of cochlear function, with power dissipation being a prime engineering constraint. We propose that a reasonable goodness criterion is the information rate through the system, per Watt of power dissipated. Speech applications requiring lter banks with a wide frequency tuning range, from 20 Hz to 20 kHz, and low power consum...

This technical report presents a cardinalized probability hypothesis density (CPHD) lter for extended targets that can result in multiple measurements at each scan. The probability hypothesis density (PHD) lter for such targets has already been derived by Mahler and a Gaussian mixture implementation has been proposed recently. This work relaxes the Poisson assumptions of the extended target PHD...

Correlation-based matching methods are known to be very expensive when used on large image databases. In this paper, we will examine ways of speeding up correlation matching by phase-coded ltering. Phase coded ltering is a technique to combine multiple patterns in one lter by assigning complex weights of unit magnitude to the individual patterns and summing them up in a composite lter. Several ...

This paper is concerned with the optimal design and performance analysis of the linear phase paraunitary (LPPU) M band lter banks in the frame of the vector quantized image coding. First, we derive an uni ed coding gain for VQ in terms of the intra-band correlation, as well as the inter-band energy compaction. Hence, by maximizing the coding gain, the LPPU M band lter banks for the general fact...

To assess the importance of occult atrial disorder with possible embolization as a cause of non-hemorrhagic stroke, 68 patients with neurologic symptoms lasting 24 hours or more and 18 patients with transient ischemic attacks were examined by long-term electrocardiographic recording (LTER). Lacking matched controls we used a reference population of 103 elderly subjects selected at random from t...

Image and video signals are sometimes corrupted by Gaussian noise. Wiener ltering could reduce noise eeectively. Wiener lter is the best linear restoration lter in the sense of mean square error (MSE). In this project, Wiener lters were implemented to reduce noise in noisy images and video sequences. The lter taps of Wiener lter adapt with local signal and noise statistics. This report has four...