Dmitry Vasilyevich Ageyev (russian: Дмитрий Васильевич Агеев; 21 February 1911 in

Saint Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...

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– 31 July 1997 in

Nizhny Novgorod Nizhny Novgorod ( ; rus, links=no, Нижний Новгород, a=Ru-Nizhny Novgorod.ogg, p=ˈnʲiʐnʲɪj ˈnovɡərət ), colloquially shortened to Nizhny, from the 13th to the 17th century Novgorod of the Lower Land, formerly known as Gork ...

, Russia) was a Soviet and Russian scientist and educator in the field of

radio engineering Broadcast engineering is the field of electrical engineering, and now to some extent computer engineering and information technology, which deals with radio and television broadcasting. Audio engineering and RF engineering are also essential par ...

. He developed the theory of code division of signals during the radio reception, which is the basis for the construction of cellular networks on CDMA technology. Along with Vladimir Kotelnikov, he was one of the founders of the theory of optimum noise immunity that he developed throughout life, starting with a thesis at his institute.

Biography

Dmitry V. Ageyev was admitted to the Radio Engineering Faculty of the Leningrad Electrotechnical Institute of Communications (LEIS) in 1930, where he learnt from the scientists of his time, such as a founder of the national radio engineering and correspondent member of

Academy of Sciences of the Soviet Union The Academy of Sciences of the Soviet Union was the highest scientific institution of the Soviet Union from 1925 to 1991, uniting the country's leading scientists, subordinated directly to the Council of Ministers of the Soviet Union (until 1946 ...

M. A. Bonch-Bruyevich, Professor

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and others. In 1934 he publishes an article with Y. B. Kobzarev “The Transition in the Resonance

Amplifier An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It may increase the power significantly, or its main effect may be to boost the v ...

”, which opened a new direction, the study of

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. In 1935 he defended his dissertation “The Methods of Dealing with Noise in the Radio Reception”, which he wrote under the direction of M. A. Bonch-Bruyevich. The State Examination Commission appreciated the thesis. The results of his research paper became the basis for an article “The Fundamentals of the Linear Selection Theory”, which was used for his thesis “The Linear Methods of Selection and the Problem of the Ether’s Bandwidth”. The LEIS Scientific Council had no right to take the defense of doctoral dissertations, but they conferred a PhD degree on D. V. Ageyev, giving him the right to defend the dissertation as a doctoral. However, he did not want to use this work twice. He wrote and defended his doctoral dissertation “A New Method of Multi-Channel Wiring” in just one year. Ageyev proposed and investigated a new principle of multicast signals and their processing, which allowed reducing the influence of impulse noise.

References

{{DEFAULTSORT:Ageev, Dmitry 1911 births 1997 deaths Engineers from Saint Petersburg Recipients of the Order of the Red Banner of Labour Communication theorists Soviet engineers