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École nationale supérieure des télécommunications de Bretagne (lit. 'Brittany National School of Telecommunications') was a French grande école of engineering, and a research center providing training in information technologies and telecommunications. In 2017, it merged with École des mines de Nantes to form IMT Atlantique, which has consistently been ranked high in French and international rankings, e.g. 98 for Computer Science and 151-200th for Electrical Engineering in the 2023 QS Ranking.As a member of the Institut Mines-Télécom, it had three campuses:
Plouzané, in the Technopôle Brest-Iroise, near Brest (France);
Campus de Beaulieu, in Rennes (France);
SUPAERO campus, in Toulouse (France).Télécom Bretagne had been the source of breakthroughs in the world of telecommunications, notably the turbo codes (first published in Proc. IEEE ICC'93) used extensively in 3G mobile telephony standards.