Digital Signal Transmission

Bissell, Chris; Chapman, David

doi:10.1017/cbo9781139172547

Cited by 23 publications

(18 citation statements)

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“…Notice the use of the virtual communication (shown by the dashed lines), where the letter 'a' is communicated in what we might here call a 'text' level, sets of bits are communicated in a 'binary' level but the actual communication is the signal, which might be light in an optical fibre. Standardised sets of levels, such as the seven layers of the ISO's framework for Open Systems Interconnection (OSI, Bissell and Chapman, 1992), have been defined, and this is important for interworking, but more generally engineers use whatever levels are convenient for the task at hand.…”

Section: A Diagrammatic Representation Of Informationmentioning

confidence: 99%

Information is provisional

Chapman

2014

Kybernetes

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Purpose – The purpose of this paper is to contribute to a transdisciplinary understanding of the nature of information. Design/methodology/approach – The work draws from previous work done on information in several disciplines and contexts, and proposes a new framework for describing and understanding information. It applies the framework to several different situations involving information, explores the insights revealed by the use of the framework and discusses some of the implications. Findings – Information is usefully described as a situated event that extracts or generates meaning, with the distinction between extracting or generating meaning corresponding to the distinction between semantic and environmental information. A diagrammatic convention based on communications theory and making use of hierarchies of levels is found to provide a powerful means of conveying many of the aspects of the nature of information, and of understanding the role of information in a wide range of applications. An additional specific finding of the work is that information is inherently provisional. Originality/value – The diagrammatic framework is a new way of presenting, describing and understanding information, and the suggestion that information is inherently provisional is believed to be new.

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Section: A Diagrammatic Representation Of Informationmentioning

confidence: 99%

Information is provisional

Chapman

2014

Kybernetes

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“…So in this case the problem of persistent intersection of delay map images will not occur. We note that the practice of modelling data transmission as the driving of the channel by a sequence of delta functions is a common one in conventional signal processing: see for example Bissell & Chapman 1992. (a) Delay Embedding for Example 2.2 Example 2.2 provides a simple model of a nonlinear channel. The extent to which the nonlinearity affects the behaviour of the channel depends upon the amplitude of the input χ.…”

Section: Delay Embedding Of Nonlinear Systemsmentioning

confidence: 99%

Iterated function system models of digital channels

Broomhead

Huke

Muldoon

et al. 2004

Proc. R. Soc. Lond. A

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This paper introduces a new class of models of digital communications channels. Physically, these models take account of the digital nature of the input. Mathematically, they are iterated function systems. As a consequence of making explicit assumptions about the role of discreteness in the models, it is possible to make general statements about the behaviour of these channels without needing to assume that they are linear. We provide the mathematical background necessary to understand the behaviour of these models and prove a number of results about their observability. We also provide a number of examples intended to demonstrate their connection with linear state space models, and to suggest how the nonlinear theory might be developed towards applications.

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“…Certainly it is possible for noise or distortion to be high enough to generate errors and to require increases in the signal strength. But the theory and science of digital information transmission through noise is highly advanced, and generally threshold values can be selected so that errors regarding whether a sample point is a "1" or a "0" can be kept minimal by the proper applications of the statistical tools used in digital theory (Bissell and Chapman, 1992). More discussion of this property of digital code will follow later.…”

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confidence: 99%

“…Various error-checking and error-correction techniques may further increase the robustness and accuracy of digital signal management (Bissell and Chapman, 1992) and are often used in digital telecommunication algorithms and other applications.…”

Section: System Noise Advantagesmentioning

confidence: 99%

Development of Digital Hearing Aids

Schweitzer¹

1997

Trends in Amplification

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Digital Signal Transmission

Cited by 23 publications

References 0 publications

Information is provisional

Information is provisional

Iterated function system models of digital channels

Development of Digital Hearing Aids

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