Recently, space-time block coding has emerged as a promising spatial transmit diversity scheme, mainly due to its simple decoding complexity. As it was initially proposed, spacetime block coding was based on the assumption of flat multipath fading channel, where there is no intersymbol interference. In this paper, we investigate the performance of two different receiver proposals using space-ti...

The performance of the ab inito gene prediction approaches mostly depends on the effectiveness of detecting the splice sites. This paper addresses the problem of splice site detection using higher-order Markov models. The tenet of our approach is to brace the higher-order dependencies of a Markov model by a neural network that receives the inputs from low-order Markov chains. The method is able...

An Edgeworth expansion of a Studentized statistic for an ergodic regenerative strong Markov process is validated. A specific nonparametric bootstrap method is proposed and proved to be second-order correct in the light of the Edgeworth expansion, which is a variant of the regenerative block bootstrap designed for discrete-time Markov processes. One-dimensional diffusions and semi-Markov process...

Block Truncation Coding (BTC) is a simple and fast lossy image compression technique for digitized gray scale images. In this paper, a novel idea for further reducing the bit rate is introduced. The BTC and its two other variants, one being the Absolute Moment Block Truncation Coding (AMBTC) are discussed and the proposed idea is incorporated in all the three methods. A bitrate of 2 bpp is achi...

We consider state-aggregation schemes for Markov chains from an information-theoretic perspective. Specifically, we aggregating the states of a chain such that mutual information aggregated separated by $T$ time steps is maximized. show $T=1$ this recovers maximum-likelihood estimator degree-corrected stochastic block model as particular case, which enables us to explain certain features likeli...

This poster contains two contributions to very-low-bitrate video coding. First, we show that in contrast to common practice incremental techniques for rate-distortion optimization such as the generalized BFOS algorithm may clearly outperform the standard technique based on Lagrangian multipliers. This is relevant in cases where the computation of RDpoints has a low complexity. An implementation...

This paper presents a paraunitary filter bank (PUFB) based on a direct lifting structure of a building block and its inverse transform for lossless-to-lossy image coding. Although the conventional liftingbased filter banks (LBFBs), which are constructed by lifting structures with integer coefficients and rounding operations, suffer from degradation of coding performance due to much rounding err...