Shannon theory. Myths and reality

• Autorzy: Pawelec J.
• Języki publikacji: EN

Abstrakty

EN

The significance of the famous Shannon's publication "A mathematical theory of communication" is discussed. The author states that this theory was a breakthrough for the times it was created. The present-day communications is so highly developed, that some old maxims should be up-dated, particularly the definition of the lower bound of signal reception. The author claims that this bound is no longer a constant value, 1n(2), as the Shannon's theory states, but depends on many factors such, as the ratio of bandwidth-to-information transmission rate, the class of a receiver (adaptive, cognitive, MIMO1) the kind of reception system (on-line or off-line), and - of course on the characteristics of noise, including entropy. Then, an absolute limit (Eb/ No )abs = 0 is suggested. An example of an advanced adaptive system approaching this bound is given.

Słowa kluczowe

EN

communication theory; Shannon's contribution; reception bound; adaptive receiver

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2008
• Tom: Vol. 56, nr 3
• Strony: 247--251
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Pawelec J.

• Defence Communication Institute, Radom University of Technology, 29 Malczewskiego St., 26-600 Radom, Poland,

Bibliografia

• [1] C. Shannon, "A mathematical theory of communication", The Bell System Teem. J. 1-77 (1948).
• [2] C. Shannon, Works on Information Theory and Cybernetics, IIŁ. Moscow, 1963, (in Russian).
• [3] J. Pawelec, "Optimum nonwhite detection. a double-matched digital filter approach", Bull. Pol. Ac.: Tech. 51 (1), 1-12 (2002).
• [4] J. Pawelec and R. Piotrowski, "Optimum filtration of NB interference in DS-CDMA satellite systems", Int. J. Sat. Cam. & Networking 21,119-125 (2003).
• [5] J. Pawelec, "An adaptive non-AWGN spread spectrum multiple access receiver", IEEE Communications Magazine, 126-127 (2002).
• [6] C. Berrou, A. Glavieux, and P. Thitimajshima, "Near Shannon limit error correcting coding and decoding: turbo codes", Int. Communications Conf. (ICC) , 1064-1068 (1993).
• [7] M. Lesniewicz, Private Communications, 2007.
• [8] L. Couch, Digital and Analog Communication Systems, Macmillan, London, 1987.
• [9] B. Sklar, Digital Communications, Prentice Hall, New Jersey, 2002.
• [10] J. Pawelec, "An information-communication system based on MIMO technology", J. Communications 17, (2008), (invited paper - to be published).