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Radio --- Radio wave propagation --- Ondes radioélectriques --- Antennas --- Transmitters and transmission --- Antennes --- Propagation --- Emetteurs et transmission

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Cell phones --- Prison contraband --- Wireless communication systems --- Telephone --- Prison administration --- Management. --- Transmitters and transmission.

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"The commonly accepted history of FM radio is one of the twentieth century's iconic sagas of invention, heroism, and tragedy. Edwin Howard Armstrong created a system of wideband frequency-modulation radio in 1933. The Radio Corporation of America (RCA), convinced that Armstrong's system threatened its AM empire, failed to develop the new technology and refused to pay Armstrong royalties. Armstrong sued the company at great personal cost. He died despondent, exhausted, and broke." "But this account, according to Gary L. Frost, ignores the contributions of scores of other individuals who were involved in the decades-long struggle to realize the potential of FM radio. The first scholar to fully examine recently uncovered evidence from the Armstrong v. RCA lawsuit, Frost offers a thorough revision of the FM story." "Frost's balanced, contextualized approach provides a much-needed corrective to previous accounts. Navigating deftly through the details of a complicated story, he examines the motivations and interactions of the three communities most intimately involved in the development of the technology - Progressive-era amateur radio operators, RCA and Westinghouse engineers, and early FM broadcasters. In the process, Frost demonstrates the tension between competition and collaboration that goes hand in hand with the emergence and refinement of new technologies." "Frost's study reconsiders both the social construction of FM radio and the process of technological evolution. Historians of technology, communication, and media will welcome this important reexamination of the canonic story of early FM radio."--Jacket.

Radio frequency modulation --- Transmitters and transmission --- History. --- FM radio --- Frequency modulation, Radio --- Angle modulation --- Modulation (Electronics) --- Geschichte 1913-1940

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Cooperative and relay communications have recently become the most widely explored topics in communications, whereby users cooperate in transmitting their messages to the destination, instead of conventional networks which operate independently and compete among each other for channel resources. As the field has progressed, cooperative communications have become a design concept rather than a specific transmission technology. This concept has revolutionized the design of wireless networks, allowing increased coverage, throughput, and transmission reliability even as conventional transmission techniques gradually reach their limits. Cooperative and relay technologies have also made their way toward next generation wireless standards, such as IEEE802.16 (WiMAX) or LTE, and have been incorporated into many modern wireless applications, such as cognitive radio and secret communications. Cooperative Communications and Networking: Technologies and System Design provides a systematic introduction to the fundamental concepts of cooperative communications and relays technology to enable engineers, researchers or graduate students to conduct advanced research and development in this area. The contents of the book can be summarized as follows: Introduces the reader to various cooperation and relay techniques along with a survey of its role in next generation wireless standards Reviews basic wireless communication and MIMO techniques for readers new to this field Presents fundamental cooperative communication and relay techniques for a basic cooperative entity that consists of only two users and a common destination Fundamental limits of cooperative and relay channels are described from the information-theoretic standpoint Describes how cooperative and relay technology can be integrated with other advanced wireless technology, such as OFDM and MIMO Introduces several cross-layer and networking issues that may arise in cooperative networks, including routing, QoS, and security considerations Cooperative Communications and Networking: Technologies and System Design provides researchers, graduate students, and practical engineers with sufficient knowledge of both the background of cooperative communications and networking, and potential research directions.

Internetworking (Telecommunication). --- MIMO systems. --- Radio relay systems. --- Wireless communication systems. --- Wireless communication systems --- Internetworking (Telecommunication) --- Radio relay systems --- MIMO systems --- Electrical & Computer Engineering --- Engineering & Applied Sciences --- Telecommunications --- Electrical Engineering --- Multiple input-multiple output systems --- Microwave relay systems --- Relay broadcast stations --- Relay transmitters --- Repeater stations --- Inter-networking (Telecommunication) --- Interoperability in computer networks --- Communication systems, Wireless --- Wireless data communication systems --- Wireless information networks --- Wireless telecommunication systems --- Engineering. --- Computer communication systems. --- Coding theory. --- Complexity, Computational. --- Electrical engineering. --- Communications Engineering, Networks. --- Engineering, general. --- Computer Communication Networks. --- Coding and Information Theory. --- Complexity. --- Electric engineering --- Engineering --- Complexity, Computational --- Electronic data processing --- Machine theory --- Data compression (Telecommunication) --- Digital electronics --- Information theory --- Signal theory (Telecommunication) --- Computer programming --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Construction --- Industrial arts --- Technology --- Distributed processing --- Radio broadcasting --- Radio stations --- Television relay systems --- Computer networks --- Telecommunication systems --- Telecommunication. --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Communication --- Telecommuting --- Information theory. --- Computational complexity. --- Communication theory --- Cybernetics