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Erschienen in:
2007 | OriginalPaper | Buchkapitel
A Communication-Theoretical View on Secret Extraction
verfasst von : Jean-Paul Linnartz, Pim Tuyls, PhD, Boris Skoric, PhD
Erschienen in: Security with Noisy Data
Verlag: Springer London
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The recent achievements in enhanced throughput, efficiency, and reliability of wireless communication systems can largely be contributed to the availability of a versatile mathematical framework for the behavior and performance of digital transmission schemes. The key foundation was Shannon's 1948 paper [251] that introduced the notion of capacity. The term
capacity
is defined as the maximum achievable rate of information exchange, where the maximization is conducted over all possible choices of transmission and detection techniques. The existence of a fundamental limit has acted as an irresistable target for ambitious engineers. However, it was only until the 1990s that the signal processing capabilities allowed a true exploitation of these insights and the throughput of practical systems closely reached the capacity limits. Another important condition was met earlier: the availability of sufficiently realistic statistical models for signals, the noise, and the channel.