In this work, the idea of using the channel eigenvectors as the basis for a block based signaling scheme over a fading multipath channel is introduced. This basis minimizes the product of the average fading attenuations along different dimensions. The IS1 from the preceding blocks (intra-block ISI) is modeled by an additive Gaussian noise. To reduce the effect of the intra-block ISI, a number o...

In this paper we formulate a training framework and present a method for task independent utterance verification. Verification-specific HMMs are defined and discriminatively trained using minimum verification error training. Task independence is accomplished by performing the verification on the subword level and training the verification models using a general phonetically balanced database th...

In this paper, we propose a novel algorithm for constructing an Unequal Error Protection (UEP) FEC code targeted towards video streaming applications. A concatenation of a set of parallel outer block codes followed by a packet interleaver and an inner block code is presented. The algorithm calculates on the fly the optimal allocation of the code rates of the inner and outer codes. When applied ...

An adaptive joint power allocation (JPA) and linear receiver design algorithm using the minimum bit error rate (MBER) criterion for a cooperative Multiple-Input MultipleOutput (MIMO) network is proposed. The system employs multiple relays with Distributed Space-Time Coding (DSTC) schemes and an Amplify-and-Forward (AF) strategy. It is designed according to a joint constrained optimization algor...

We derive a new upper bound on the rate distortion function for arbitrary memoryless sources, which is based on the relation between mutual information and minimum mean-square error discovered by Guo et al. This upper bound is in general tighter than the well known upper bound given by the rate distortion function of a Gaussian source with an equal variance found by Shannon and becomes tight fo...

Respiratory rate is a sensitive clinical parameter in a multitude of pulmonary diseases, especially in the critical care setting. In order to validate the routine recording of the respiratory rate in the intensive care unit, we compared the values obtained from the nursing records with the breathing frequency continuously recorded by a prototype microprocessor system using respiratory inductive...

One of the most important requirements on a biometric verification system, beside others (e.g. biometric template protection), is a high user authentication performance. During the last years a lot of research is done in different domains to improve user authentication performance. In this work we suggest a user specific feature mask vector MV applied on a biometric hash algorithm for dynamic h...