Results 221 to 230 of about 38,225 (268)
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2008 42nd Asilomar Conference on Signals, Systems and Computers, 2008
We study the security of communication between a single transmitter and multiple receivers in a broadcast channel in the presence of an eavesdropper. We consider several special classes of channels. As the first model, we consider the degraded multi-receiver wiretap channel where the legitimate receivers exhibit a degradedness order while the ...
Ersen Ekrem, Sennur Ulukus
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We study the security of communication between a single transmitter and multiple receivers in a broadcast channel in the presence of an eavesdropper. We consider several special classes of channels. As the first model, we consider the degraded multi-receiver wiretap channel where the legitimate receivers exhibit a degradedness order while the ...
Ersen Ekrem, Sennur Ulukus
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Broadcast-relay-broadcast channels
2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers, 2010In this paper, we study the achievable rate regions of broadcast-relay-broadcast channels. The source broadcasts information to the users. A number of parallel relays are used to assist users. Each relay receives information from the source and forwards information to users. The relays also broadcast the forwarded information to all users.
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1993
[Pra91, Pra92] develop CBS, a CCS-like calculus [Mil89] where processes communicate by broadcasting values along a single channel. These values are hidden or restricted by translation to noise. This paper types CBS and restricts it to processes with a unique response to each input.
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[Pra91, Pra92] develop CBS, a CCS-like calculus [Mil89] where processes communicate by broadcasting values along a single channel. These values are hidden or restricted by translation to noise. This paper types CBS and restricts it to processes with a unique response to each input.
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Broadcast Authentication and Broadcast Encryption
2014Broadcast authentication schemes that employ only symmetric PRFs include certificates-based schemes like one-time-signatures (OTS), and timed efficient stream loss tolerant authentication (TESLA), and identity-based schemes based on probabilistic subset allocation.
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IEEE Transactions on Information Theory, 1972
We introduce the problem of a single source attempting to communicate information simultaneously to several receivers. The intent is to model the situation of a broadcaster with multiple receivers or a lecturer with many listeners. Thus several different channels with a common input alphabet are specified.
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We introduce the problem of a single source attempting to communicate information simultaneously to several receivers. The intent is to model the situation of a broadcaster with multiple receivers or a lecturer with many listeners. Thus several different channels with a common input alphabet are specified.
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1996
In the calculus of broadcasting systems (CBS), speech is autonomous, but hearing takes place only when the environment speaks. This paper develops a timed CBS (TCBS) where no time may pass if there is speech pending. A process wishing to speak can be forced, by attaching a time-out to it, to first listen for a specified length of time.
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In the calculus of broadcasting systems (CBS), speech is autonomous, but hearing takes place only when the environment speaks. This paper develops a timed CBS (TCBS) where no time may pass if there is speech pending. A process wishing to speak can be forced, by attaching a time-out to it, to first listen for a specified length of time.
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On Reversibility and Broadcast
2018Causally consistent reversibility relates reversibility in a concurrent system with causality. Broadcast is a powerful primitive of communication used to model several distributed systems from local area networks, including wireless systems and lately multi-agent systems. In this paper, we study the interplay between reversibility and broadcast, in the
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Data Broadcasting Solutions for Broadcasters
142nd Technical Conference and Exhibition, 2000With the advent of digital television in the U.S. and worldwide, broadcasters are searching for new opportunities to enhance programming. In addition, many in the industry believe that potential new sources of revenue can be unlocked by providing consumers rich digital content.
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International Journal of Food Sciences and Nutrition, 1980
The use of radio by the dietitians of the Whittington Hospital and their guest speakers to advise and educate hospital patients on varying aspects of human nutrition, reaching a much larger section of the local population than they could in their usual work, is described.
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The use of radio by the dietitians of the Whittington Hospital and their guest speakers to advise and educate hospital patients on varying aspects of human nutrition, reaching a much larger section of the local population than they could in their usual work, is described.
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