Titlebook: Communications and Cryptography; Two Sides of One Tap Richard E. Blahut,Daniel J. Costello,Thomas Mittel Book 1994 Springer Science+Busines

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Hans Brandt-Pook,Rainer Kollmeierbase station. We discuss detection and the use of stripping in a multiaccess multipath environment. We finally derive a capacity for these systems. It turns out that CDMA type systems are inherently capable (theoretically) of higher rates than systems such as slow frequency hopping that maintain ort

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Softwareentwicklung kompakt und verständlich spectral domain and for representing the solutions of recurrence equations used in stream ciphers. So far, finite field Fourier transforms have only been defined on vectors that have a length which is relatively prime to the characteristic of the field. The aim of the paper is to generalize this de

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Softwareentwicklung kompakt und verständlichues are defined as log-likelihood ratios. The “soft-output”-Viterbi algorithm (SOVA) is described in a compact way, as well as a general rule for “soft-in/soft-out” decoding of binary block codes. An example with a Reed-Muller code in a concatenated scheme shows a coding gain of 3.5 dB at a BER of 1

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Softwareentwicklung kompakt und verständlichAs a measure of complexity we use the number of comparisons of two digits in the sequence. A straightforward exhaustive search would compare the sequences after having delayed one of them each of the . possible delay values. On the average, two bits are compared before a mismatch is discovered. Henc

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Softwareentwicklung kompakt und verständlichoding matrix is minimal but that there exist minimal encoding matrices that are not canonical. Some equivalent conditions for an encoding matrix to be canonical are given. The generalized constraint lengths are defined. They are invariants of equivalent canonical encoding matrices.

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,Arbeitsprioritäten — ein kleines Beispiel,This paper summarizes the results of four separate research topics related to the generation of binary sequences by linear feedback shift registers for applications in crytographic systems.

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https://doi.org/10.1007/978-3-642-55708-8An informal survey of certain aspects of coding for a particular multiaccess channel is given. The situation of particular interest is the two-user binary adder channel in which each user transmits a zero or a one and the channel output is the sum, as integers, of the two inputs. The known results in coding for this channel are discussed.

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