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25 October 2013Information theory: two theories in one
The goal of the paper is a discussion of benefits and fields of application of the optimal analog feedback communication
systems (AFCS) and comparison of the approaches to their and digital communication systems (DCS) optimization.
There is shown a deep difference between the mathematical tools used for the analysis and optimization of AFCS and
DCS which permits to consider the approaches to their optimization as independent directions of research in information
theory. The main reason of differences is qualitative difference of the sources of signals transmitted by the systems. Both
analog and digital systems solve similar task but in completely different way. The results of analysis show that digital CS
are irreplaceable for digital signals transmission. However, in all cases, where optimal AFCS can be applied, they
transmit analog signals with the greater power-bandwidth efficiency than DCS designed for the same applications. The
paper is based on previous author’s research and researches in AFCS theory carried out in the 1950-1960s.
A. Platonov
"Information theory: two theories in one", Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89032G (25 October 2013); https://doi.org/10.1117/12.2040233
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A. Platonov, "Information theory: two theories in one," Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89032G (25 October 2013); https://doi.org/10.1117/12.2040233