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Claude Berrou
Claude Berrou (; born 23 September 1951 in Penmarch) is a French professor in electrical engineering at École Nationale Supérieure des Télécommunications de Bretagne, now IMT Atlantique. He is the sole inventor of a groundbreaking quasi-optimal error-correcting coding scheme called turbo codes as evidenced by the sole inventorship credit given on the fundamental patent for turbo codes. The original patent filing for turbo codes issued in the US aUS Patent 5,446,747 A 1993 paper entitled "''Near Shannon Limit Error-correcting Coding and Decoding: Turbo-codes''" published in the Proceedings of IEEE International Communications Conference was the first public disclosure of turbo codes. This 1993 paper listed three authors because it was formed from three separate submissions that were combined due to space constraints. The three authors listed on the 1993 paper are: Berrou, Glavieux, and Thitimajshima. Because the 1993 paper was the first public introduction of turbo code ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penmarch
Penmarch (, ) is a commune in the Finistère department of Brittany, northwestern France.Commune de Penmarch (29158) INSEE It lies 18 km south-west of by road. Geography Penmarch is the southwest-most township of Pays Bigouden, at the southern end of the Bay of Audierne. It is part of the canton of Pont-l'Abbé, and of the ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convolution Code
In telecommunication, a convolutional code is a type of error-correcting code that generates parity symbols via the sliding application of a boolean polynomial function to a data stream. The sliding application represents the 'convolution' of the encoder over the data, which gives rise to the term 'convolutional coding'. The sliding nature of the convolutional codes facilitates trellis decoding using a time-invariant trellis. Time invariant trellis decoding allows convolutional codes to be maximum-likelihood soft-decision decoded with reasonable complexity. The ability to perform economical maximum likelihood soft decision decoding is one of the major benefits of convolutional codes. This is in contrast to classic block codes, which are generally represented by a time-variant trellis and therefore are typically hard-decision decoded. Convolutional codes are often characterized by the base code rate and the depth (or memory) of the encoder ,k,K/math>. The base code rate is ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-density Parity-check Code
Low-density parity-check (LDPC) codes are a class of error correction codes which (together with the closely-related turbo codes) have gained prominence in coding theory and information theory since the late 1990s. The codes today are widely used in applications ranging from wireless communications to flash-memory storage. Together with turbo codes, they sparked a revolution in coding theory, achieving order-of-magnitude improvements in performance compared to traditional error correction codes. Central to the performance of LDPC codes is their adaptability to the iterative belief propagation decoding algorithm. Under this algorithm, they can be designed to approach theoretical limits (Channel capacity, capacities) of many channels at low computation costs. Theoretically, analysis of LDPC codes focuses on sequences of codes of fixed code rate and increasing block length. These sequences are typically tailored to a set of channels. For appropriately designed sequences, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marconi Electronic Systems
Marconi Electronic Systems Limited (MES), or GEC-Marconi as it was until 1998, was the defence arm of General Electric Company (GEC). It was split off from GEC and bought by British Aerospace (BAe) on 30 November 1999 to form BAE Systems. GEC then renamed itself Marconi plc. MES exists today as BAE Systems Electronics Limited, a subsidiary of BAE Systems, but the assets were rearranged elsewhere within that company. MES-related businesses include BAE Systems Submarine Solutions, BAE Systems Surface Ships, BAE Systems Insyte and Selex ES (now a part of Leonardo). History The Marconi Company had been formed by Guglielmo Marconi in 1897 in Britain, originally under the name of The Wireless Telegraph & Signal Company. Following GEC's acquisition of Marconi as part of English Electric in 1968, the Marconi brand was used for its defence businesses, e.g. Marconi Space & Defence Systems (MSDS), Marconi Underwater Systems Ltd (MUSL). When it was bought by General Electric, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Academy Of Sciences
The French Academy of Sciences (, ) is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French Scientific method, scientific research. It was at the forefront of scientific developments in Europe in the 17th and 18th centuries, and is one of the earliest Academy of Sciences, Academies of Sciences. Currently headed by Patrick Flandrin (President of the academy), it is one of the five Academies of the . __TOC__ History The Academy of Sciences traces its origin to Colbert's plan to create a general academy. He chose a small group of scholars who met on 22 December 1666 in the King's library, near the present-day Bibliothèque nationale de France, Bibliothèque Nationale, and thereafter held twice-weekly working meetings there in the two rooms assigned to the group. The first 30 years of the academy's existence were relatively informal, since no statutes had as yet been laid down for the ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France Télécom
Orange S.A. (; formerly , stylised as france telecom) is a French multinational corporation, multinational telecommunications corporation founded in 1988 and headquartered in Issy-les-Moulineaux, near Paris. ''Orange'' has been the corporation's main brand for mobile phone, mobile, landline, internet and Internet Protocol television (IPTV) services since 2006. It traces its origins back to Hutchison Whampoa acquiring a controlling stake in Orange UK, Microtel Communications in 1994 in the United Kingdom. Microtel Communications became a subsidiary of Mannesmann in 1999 and then was acquired by ''France Télécom'' in 2000. The former French public telecoms monopoly thus became internationalized following this takeover and has pursued an expansionist policy since. The group now operates in many countries in Europe, Africa and in the French West Indies. Since February 2012, as a result of the company's decision to transfer its fixed-line telephony operations to its ''Orange'' brand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office in New York City and an operations center in Piscataway, New Jersey. The IEEE was formed in 1963 as an amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. History The IEEE traces its founding to 1884 and the American Institute of Electrical Engineers. In 1912, the rival Institute of Radio Engineers was formed. Although the AIEE was initially larger, the IRE attracted more students and was larger by the mid-1950s. The AIEE and IRE merged in 1963. The IEEE is headquartered in New York City, but most business is done at the IEEE Operations Center in Piscataway, New Jersey, opened in 1975. The Australian Section of the IEEE existed between 1972 and 1985, after which it s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Richard W
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office in New York City and an operations center in Piscataway, New Jersey. The IEEE was formed in 1963 as an amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. History The IEEE traces its founding to 1884 and the American Institute of Electrical Engineers. In 1912, the rival Institute of Radio Engineers was formed. Although the AIEE was initially larger, the IRE attracted more students and was larger by the mid-1950s. The AIEE and IRE merged in 1963. The IEEE is headquartered in New York City, but most business is done at the IEEE Operations Center in Piscataway, New Jersey, opened in 1975. The Australian Section of the IEEE existed between 1972 and 1985, after which it split into state- and te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Information Theory Society
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office in New York City and an operations center in Piscataway, New Jersey. The IEEE was formed in 1963 as an amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. History The IEEE traces its founding to 1884 and the American Institute of Electrical Engineers. In 1912, the rival Institute of Radio Engineers was formed. Although the AIEE was initially larger, the IRE attracted more students and was larger by the mid-1950s. The AIEE and IRE merged in 1963. The IEEE is headquartered in New York City, but most business is done at the IEEE Operations Center in Piscataway, New Jersey, opened in 1975. The Australian Section of the IEEE existed between 1972 and 1985, after which it s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André-Marie Ampère
André-Marie Ampère (, ; ; 20 January 177510 June 1836) was a French physicist and mathematician who was one of the founders of the science of classical electromagnetism, which he referred to as ''electrodynamics''. He is also the inventor of numerous applications, such as the solenoid (a term coined by him) and the electrical telegraph. As an autodidact, Ampère was a member of the French Academy of Sciences and professor at the École polytechnique and the Collège de France. The SI unit of electric current, the ampere (A), is named after him. His name is also one of the 72 names inscribed on the Eiffel Tower. The term ''kinematic'' is the English version of his ''cinématique'', which he constructed from the Greek ''kinema'' ("movement, motion"), itself derived from ''kinein'' ("to move"). Biography Early life André-Marie Ampère was born on 20 January 1775 in Lyon to Jean-Jacques Ampère, a prosperous businessman, and Jeanne Antoinette Desutières-Sarcey Ampè ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TDF Group
TDF (which stands for ''Télédiffusion de France'' officially renamed ''TDF'' in 2004) is a French company which provides radio and television transmission services, services for telecommunications operators, and other multimedia services – digitization of content, encoding, storage, etc. Its headquarters are located in Paris. It is the dominant partner in the HDRR WiMAX consortium and is also part of Digital Radio Mondiale. Arkena Arkena was European company that regroups four entities: Cognacq-Jay Image (France), PSN (Poland), Qbrick (Sweden) and SmartJog (France). These entities were all part of the Media Services division of the TDF Group. http://www.broadbandtvnews.com/2014/01/20/arkena-joins-together-all-tdf-media-subsidiaries/ - Broadband TV News, 20 January 2014 Arkena provides f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France Telecom
Orange S.A. (; formerly , stylised as france telecom) is a French multinational telecommunications corporation founded in 1988 and headquartered in Issy-les-Moulineaux, near Paris. ''Orange'' has been the corporation's main brand for mobile, landline, internet and Internet Protocol television (IPTV) services since 2006. It traces its origins back to Hutchison Whampoa acquiring a controlling stake in Microtel Communications in 1994 in the United Kingdom. Microtel Communications became a subsidiary of Mannesmann in 1999 and then was acquired by ''France Télécom'' in 2000. The former French public telecoms monopoly thus became internationalized following this takeover and has pursued an expansionist policy since. The group now operates in many countries in Europe, Africa and in the French West Indies. Since February 2012, as a result of the company's decision to transfer its fixed-line telephony operations to its ''Orange'' brand, all offers marketed by France Télécom are ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
