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On the exact bit error probability for Viterbi decoding of convolutional codes

Forty years ago, Viterbi published upper bounds on both the first error event (burst error) and bit error probabilities for Viterbi decoding of convolutional codes. These bounds were derived using a signal flow chart technique for convolutional encoders. In 1995, Best et al. published a formula for the exact bit error probability for Viterbi decoding of the rate R=1/2, memory m=1 convolutional enc

Jensen measures, duality and pluricomplex Green functions

This thesis conceptually consists of two parts. The fist part---the first half of paper I and papers II--IV---is a study of Jensen measures and their role in pluripotential theory. Lately, there have been a great interest in new methods for constructing plurisubharmonic functions as lower envelopes of disc functionals in the spirit of Poletsky. In this context, Jensen measures of various types pla

On the physiological location of otoacoustic emissions

During recent years, much attention has been paid otoacoustic emissions in the clinical audiological practice. The received view locates their origin in the cochlea, more precisely in the outer hair cells. It is, however, still uncertain if there is an interaction between the ears regarding otoacoustic emissions. Earlier findings suggest an interaction at the level of the olivocochlear bundle. The

A gravitomagnetic thought experiment for undergraduates

The gravitomagnetic force is the gravitational counterpart to the Lorentz force in electromagnetics. This paper presents a thought experiment from which the gravitomagnetic force is obtained using the Newton theory of gravitation and elementary knowledge in the special theory of relativity. The example is suitable to present in an undergraduate course on basic electromagnetic theory.