On the physical and communication properties of a thermodynamical communication channel
On the suitability of the internet multimedia storage for steganographic information transfer in MP4 files
The aim of this work is to analyze suitability of existing internet multimedia storage services to use as a covert (steganographic) transmission channel. After general overview we focus specifically on the YouTube service. In particular, we study the feasibility of the recently proposed new steganographic technique [6] of hiding information directly in the structure of the mp4-encoded video file. Our statistical analysis of the set of 1000 video files stored by this service show the practical limitations...
Optimal transmission of Gaussian signals through a feedback channel.
Output-based estimation of communication channels
Performance of multichannel multiaccess protocols with receiver collisions
Simultaneous channels decomposable into memoryless components. I
Simultaneous channels decomposable into memoryless components. II
Stability and throughput improvement for multichannel CSMA and CSMA/CD protocols with optimal bandwidth allocation
This paper examines appropriate protocols for high speed multiple access communication systems where the bandwidth is divided into two separate asymmetric channels. Both channels operate using slotted non-persistent CSMA or CSMA/CD techniques. Free stations access the first channel while all retransmissions occur in the second channel. We define the stability regions and the rules for optimal bandwidth allocation among the two channels for improvement of the system performance in case of infinite...
Statistical data reduction via construction of sample space partitions
Stochastic signal codification and sigma transform.
In the last years, a relation between bounded real functions of one variable and two-valued probabilistic functions defined on the complex plane has been established through the introduction of the Sigma-Transform concept.The paper presents an extension of the concept of Sigma-Transform, giving rise to the diagonal Sigma-Transform and the Striped Sigma-Transform which, when combined, allow a formal treatment of the Multichannel Stochastic Signal Codification. An application of the method to error...
The Collatz-Wielandt quotient for pairs of nonnegative operators
In this paper we consider two versions of the Collatz-Wielandt quotient for a pair of nonnegative operators that map a given pointed generating cone in the first space into a given pointed generating cone in the second space. If the two spaces and two cones are identical, and is the identity operator, then one version of this quotient is the spectral radius of . In some applications, as commodity pricing, power control in wireless networks and quantum information theory, one needs to deal with...
Асимптотическое решение одной задачи поиска сигнала в многоканальной системе
Критерий асинхронной конечной автоматности многотактных каналов