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vii Part 1. ULTIMATE PHYSICAL LIMITS IN ELEcrRONIC CCM1UNICATION
Breaking the Recursive Bottleneck Professor David G. Messerschmitt
3 Optimum Scales and Limits of Integration Professor Daniel V.
McCaughan . . * . 21 On Ultimate Thermodynamic Limitations in
Communication and canputation Professor Jerome Rothstein 43 Part 2.
STATISTICAL, INFORMATIONAL, COMPUTATIONAL AND CRYPI'OGRAPHIC LIMITS
On the Capacity of Peak Power Constrained Gaussian Channels
Professor I. Bar-David *...***. 61 Complexity Issues for Public Key
Cryptography Professor Ian F. Blake, Dr. Paul C. van Oorschot and
Dr. Scott A. Vanstone . . *...*. *...75 Collaborative Coding for
Optical Fibre Multi-User Channels Dr. P. Bridge . **. . ***...*. 99
What Happened with Knapsack Cryptographic Schemes? Professor Y. G.
Desmedt . **...****. 113 Optical Logic for Computers Dr. Robert W.
Keyes ...* 135 Limitations of Queueing Models in Communication
Networks 143 Professor Anthony Ephremides . * * . . * * * * * . *
Limits to Network Reliability Dr. GUnter G. Weber . *...1 55 Two
Non-Standard Paradigms for Computation: Analog Machines and
Cellular Automata Professor Kenneth Steiglitz ******** 173 The
Capacity Region of the Binary Multiplying Channel - A Converse
Professor J. Pieter M. Schalkwijk ...*. * 193 Recent Developments
in Cryptography Dr. Fred Piper . * * * . * * * 207 vi The Role of
Feedback in Communication Professor Thomas M. Cover * . * . . * 225
The Complexities of Information Transfer with Reference to a
Genetic Code Model Mr. G. A. Karpel . . *...
This volume contains almost complete proceedings of the NATO
Advanced Study Institute (ASI) organised in 1979 to bring together
principal innovators and numerous users of mathematical techniques
for analysing the interaction of electromagnetic waves with
engineering and biological structures. The mathematical disciplines
which can be brought to bear on these problems necessitate
examination of effectiveness, convergence and robustness of the
derived analytic and num~rical algorithms. The aim of this ASI was
to give a clear and up-to-date tutorial presentation of available
techniques, and to bring together interested scientists, engineers
and mathematiciaris, to discuss together their experience and to
ensure wider familiarity with the subject. Our programme consists
of three distinct yet related parts. The first two of these reflect
two somewhat different methods applicable for different ranges of
L/A, where L represents a characteristic dimension of a structure
and A is a representative wavelength-of radiation. The third part
deals with the specific problem of biological interaction. In the
first part (Low and Intermediate Frequency Applications) we offer
tutorial texts and user-oriented discussions on main techniques and
problems concerning: radiation, scattering, aperture penetration,
inverse scattering, using moment methods and their developments.
The approach to the high frequency applications forms the subject
of the second part of this volume, concentrating mainly on the
geometrical theory of diffraction (GTD). There are three main
variants of the GTD: uniform theory of diffraction (UTD), uniform
asymptotic theory (liAT) , spectral theory of diffraction (STD).
This volu e contains the complete proceedings of the second NATO
Advanced Study Institute organised to relate co uni cation theory
with allied subjects, and thus to single out themes which, though
peripheral at present, are gaining in importance because of recent
developments in theoretical investi gations by communication
experts. In 1974 we attempted to promote an interchange of ideas
between specialists in Signal Processing and in Control and System
Sciences *. This time we tried to concentrate on probabilistic
aspects of communication theory and practice and of the allied
science of random process theory, with its novel and exciting
approach to the mathematical foundations of noise phenomena. The
topics presented here have been chosen with the above in view, to
enlarge ideas and to diffuse results in the two allied subjects, by
providing the opportunity for gaining insight in depth into new
developments. These topics fall broadly into 10 distinct parts.
Each starts with two or more basic presentations of a tutorial
nature, followed by one or more detailed exa inations of particular
aspects of the subject. In addition, some parts are concluded with
reports of panel dis cuss ons organised to consider a particularly
pertinent issue."
This volume contains the complete proceedings of a NATO Advanced
Study Institute on various aspects of the reliability of electronic
and other systems. The aim of the Insti~ute was to bring together
specialists in this subject. An important outcome of this
Conference, as many of the delegates have pointed out to me, was
complementing theoretical concepts and practical applications in
both software and hardware. The reader will find papers on the
mathematical background, on reliability problems in establishments
where system failure may be hazardous, on reliability assessment in
mechanical systems, and also on life cycle cost models and spares
allocation. The proceedings contain the texts of all the lectures
delivered and also verbatim accounts of panel discussions on
subjects chosen from a wide range of important issues. In this
introduction I will give a short account of each contribution,
stressing what I feel are the most interesting topics introduced by
a lecturer or a panel member. To visualise better the extent and
structure. of the Institute, I present a tree-like diagram showing
the subjects which my co-directors and I would have wished to
include in our deliberations (Figures 1 and 2). The names of our
lecturers appear underlined under suitable headings. It can be seen
that we have managed to cover most of the issues which seemed
important to us. VI SYSTEM EFFECTIVENESS _---~-I~--_- Performance
Safety Reliability ~intenance ~istic Lethality Hazards Support
S.N.R. JARDINE Max. Vel. etc.
vii Part 1. ULTIMATE PHYSICAL LIMITS IN ELEcrRONIC CCM1UNICATION
Breaking the Recursive Bottleneck Professor David G. Messerschmitt
3 Optimum Scales and Limits of Integration Professor Daniel V.
McCaughan . . * . 21 On Ultimate Thermodynamic Limitations in
Communication and canputation Professor Jerome Rothstein 43 Part 2.
STATISTICAL, INFORMATIONAL, COMPUTATIONAL AND CRYPI'OGRAPHIC LIMITS
On the Capacity of Peak Power Constrained Gaussian Channels
Professor I. Bar-David *...***. 61 Complexity Issues for Public Key
Cryptography Professor Ian F. Blake, Dr. Paul C. van Oorschot and
Dr. Scott A. Vanstone . . *...*. *...75 Collaborative Coding for
Optical Fibre Multi-User Channels Dr. P. Bridge . **. . ***...*. 99
What Happened with Knapsack Cryptographic Schemes? Professor Y. G.
Desmedt . **...****. 113 Optical Logic for Computers Dr. Robert W.
Keyes ...* 135 Limitations of Queueing Models in Communication
Networks 143 Professor Anthony Ephremides . * * . . * * * * * . *
Limits to Network Reliability Dr. GUnter G. Weber . *...1 55 Two
Non-Standard Paradigms for Computation: Analog Machines and
Cellular Automata Professor Kenneth Steiglitz ******** 173 The
Capacity Region of the Binary Multiplying Channel - A Converse
Professor J. Pieter M. Schalkwijk ...*. * 193 Recent Developments
in Cryptography Dr. Fred Piper . * * * . * * * 207 vi The Role of
Feedback in Communication Professor Thomas M. Cover * . * . . * 225
The Complexities of Information Transfer with Reference to a
Genetic Code Model Mr. G. A. Karpel . . *...
This volume contains the full proceedings of the Fourth Advanced
Study Institute organised by myself and my colleagues in . * the
field of Communication Theory and Allied Subjects. In the first
Institute we associated the subject of signal processing in
communication with that in control engineering. Then we
concentrated on noise and random phenomena by bringing in as well
the subject of stochastic calculus. The third time our subject was
multi-user communication and associated with it, the important
problem of assessing algorithmic complexity. This time we are
concerned with the vast increase of computational power that is now
available in communication systems processors and controllers. This
forces a mathematical, algorithmic and structural approach to the
solution of computational requirements and design problems, in
contrast to previous heuristic and intuitive methods. We are also
concerned with the interactions and trade-offs between the
structure, speed, and complexity of a process, and between software
and hardware implementations. At the previous Advanced Study
Institute in this series, on Multi-User Communications, there was a
session on computational complexity, applied particularly to
network routing problems. It was the aim of this Institute to
expand this topic and to link it with information theory, random
processes, pattern analysis, and implementation aspects of
communication processors. The first part of these proceedings
concentrates on pattern and structure in communications processing.
In organising this session I was greatly helped and guided by
Professor P. G. Farrell and Professor J. L. Massey.
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