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Books > Computing & IT > Applications of computing > Signal processing
This monograph is motivated by a number of recent developments that
appear to define a possible new role for researchers with an
engineering profile. First, there are now several software
libraries - such as IBM's Qiskit, Google's Cirq, and Xanadu's
PennyLane - that make programming quantum algorithms more
accessible, while also providing cloud-based access to actual
quantum computers. Second, a new framework is emerging for
programming quantum algorithms to be run on current quantum
hardware: quantum machine learning. In the current noisy
intermediate-scale quantum (NISQ) era, quantum machine learning is
emerging as a dominant paradigm to program gate-based quantum
computers. In quantum machine learning, the gates of a quantum
circuit are parametrized, and the parameters are tuned via
classical optimization based on data and on measurements of the
outputs of the circuit. Parametrized quantum circuits (PQCs) can
efficiently address combinatorial optimization problems, implement
probabilistic generative models, and carry out inference
(classification and regression).This monograph provides a
self-contained introduction to quantum machine learning for an
audience of engineers with a background in probability and linear
algebra. It first describes the background, concepts, and tools
necessary to describe quantum operations and measurements. Then, it
covers parametrized quantum circuits, the variational quantum
eigensolver, as well as unsupervised and supervised quantum machine
learning formulations.
Arduino 101 houses an Intel Curie module which offers a better
performance at a lower power footprint. The module has two 32-bit
MCUs - an x86 Intel Quark processor and an ARC EM4 processor along
with 384kB flash memory and 80kB SRAM. These onboard MCUs combine a
variety of new technologies including wireless communication via
Bluetooth Low Energy, 6 axis motion sensor with an accelerometer,
and a gyroscope. With this book, you will: Explore neural net
pattern matching Have the Arduino learn gesture recognition Perfect
for students, teachers, and hobbyists who need just enough
information to get started with the Arduino 101.
This monograph covers the topic of Wireless for Machine Learning
(ML). Although the general intersection of ML and wireless
communications is currently a prolific field of research that has
already generated multiple publications, there is little review
work on Wireless for ML. As data generation increasingly takes
place on devices without a wired connection, ML related traffic
will be ubiquitous in wireless networks. Research has shown that
traditional wireless protocols are highly inefficient or
unsustainable to support ML, which creates the need for new
wireless communication methods. This monograph gives an exhaustive
review of the state-of-the-art wireless methods that are
specifically designed to support ML services over distributed
datasets. Currently, there are two clear themes within the
literature, analog over-the-air computation and digital radio
resource management optimized for ML. A comprehensive introduction
to these methods is presented, reviews are made of the most
important works, open problems are highlighted and application
scenarios are discussed.
Binary decisions guide our everyday lives in situations both
critical and trivial. The choices made by politicians and
physicians may have consequential implications on a global or
individual scale. Perhaps less consequential is whether or not we
choose to carry an umbrella on a cloudy day. Any choice made
inherently involves a conscious, subconscious, or formal tradeoff
between benefits and detriments.This monograph develops and
presents a framework for binary hypothesis testing as it applies to
both the classical and quantum mechanical environments. The authors
set the scene by first describing separately the operating
characteristics associated with classical binary hypothesis testing
and those within quantum mechanics. They proceed to describe in
detail in subsequent chapters how quantum measurements that employ
redundant, or overcomplete, representations of the state of the
system being measured can be used.Written in a tutorial style,
readers from both classical and quantum backgrounds will find this
an enlightening treatise on the topic. Examples and problems are
used throughout to enable the reader to readily grasp the new
concepts and to further their own understanding. This monograph is
a comprehensive and accessible overview of a complex problem for
students and researchers in signal processing.
In view of the extensive development of CCS 7 and fast-paced growth
of ISDN in telecommunication networks throughout the world, this
valuable resource serves as a timely reference and guide. Practical
and up-to-date, ENGINEERING NETWORKS FOR SYNCHRONIZATION, CCS 7,
AND ISDN provides in-depth instruction on three important and
closely related elements of the modern digital network: network
synchronization, CCITT Common Channel Signaling System No. 7 (CCS
7), and Narrowband ISDN. Sponsored by: IEEE Communications Society.
Modern day cellular mobile networks use Massive MIMO technology to
extend range and service multiple devices within a cell. This has
brought tremendous improvements in the high peak data rates that
can be handled. Nevertheless, one of the characteristics of this
technology is large variations in the quality of service dependent
on where the end user is located in any given cell. This becomes
increasingly problematic when we are creating a society where
wireless access is supposed to be ubiquitous. When payments,
navigation, entertainment, and control of autonomous vehicles are
all relying on wireless connectivity the primary goal for future
mobile networks should not be to increase the peak rates, but the
rates that can be guaranteed to the vast majority of the locations
in the geographical coverage area. The cellular network
architecture was not designed for high-rate data services but for
low-rate voice services, thus it is time to look beyond the
cellular paradigm and make a clean-slate network design that can
reach the performance requirements of the future. This monograph
considers the cell-free network architecture that is designed to
reach the aforementioned goal of uniformly high data rates
everywhere. The authors introduce the concept of a cell-free
network before laying out the foundations of what is required to
design and build such a network. They cover the foundations of
channel estimation, signal processing, pilot assignment, dynamic
cooperation cluster formation, power optimization, front-haul
signalling, and spectral efficiency evaluation in uplink and
downlink under different degrees of cooperation among the access
points and arbitrary linear combining and precoding. This monograph
provides the reader with all the fundamental information required
to design and build the next generation mobile networks without
being hindered by the inherent restrictions of modern
cellular-based technology.
Acoustic source localization is an essential component in many
modern day audio applications. For example, smart speakers require
localization capabilities in order to determine the speakers in the
scene and their role. Based on the location information, they can
enhance a speaker or carry out location specific tasks, such as
switching the lights on and off, steering a camera, etc.
Localization has often been based on creating physical models which
become extremely intricate in real-world applications. Recently,
researchers have started using learning techniques to address
localization problems.This monograph introduces the reader to the
research and practical aspects behind the approach of learning the
characteristics of the acoustic environment directly from the data
rather than using a predefined physical model. Written by the
experts in the field who have developed many of these techniques,
it provides a comprehensive overview and insights into this
burgeoning area of acoustic developments. The reader is introduced
to the underlying mathematics before being introduced to the
localization problem in depth. The core paradigm of using manifolds
for diffusion mapping and distance is then described. Building on
these concepts, the authors address both single and multiple
manifold localization. Finally, manifold-based tracking is covered.
Data-Driven Multi-Microphone Speaker Localization on Manifolds is
an illuminating introduction to designing and building acoustic
systems where localization of multi-microphone and speakers forms
an essential part of the system.
The book addresses the current demand for a scientific approach to
advanced wireless technology and its future developments, including
the current move from 4G to 5G wireless systems (2020), and the
future to 6G wireless systems (2030). It gives a clear and in-depth
presentation of both antennas and the adaptive signal processing
that makes antennas powerful, maneuverable, and necessary for
advanced wireless technology. Moving towards the increasing demand
for a scientific approach to smart antennas, the book presents
electromagnetic signal processing techniques to both control the
antenna beam and to track the moving station, which is required for
effective, fast, dynamic beamforming. In addition to presenting
new, memory efficient and fast algorithms for smart antennas,
another helpful feature of the book is the inclusion of complete
listings of MATLABTM codes for powerful techniques such as
Artificial Intelligence (AI) beamforming, Analytical Phase Shift
technique and the traditional Least Mean Square method, The
student, researcher or engineer may readily use these codes to gain
confidence in understanding, as well as to develop and deploy
powerful, new smart antenna techniques. The first part of the book
presents a comprehensive description and analysis of basic antenna
theory, starting from short dipole antennas to array antennas. This
section also includes important concepts related to antenna
parameters, electromagnetic wave propagation, the Friis equation,
the radar equation and wave reflection and transmission through
media. The second part of the book focuses on smart antennas,
commencing from a look at traditional approach to beam forming
before getting into the details of smart antennas. Complete
derivation and description of the techniques for electromagnetic
field signal processing techniques for adaptive beam forming are
presented. Many new and research ideas are included in this
section. A novel method for fast, low memory and accurate,
maneuverable single beam generation is presented, as well as other
methods for beamforming with fewer elements with a simple method
for tracking the mobile antenna and station. In this section, for
completeness, the use of antenna signal processing for synthetic
aperture techniques for imaging are also presented, specifically
the Inverse Synthetic Aperture Imaging technique. Some computer
codes are given for the student and researcher to get started with
new areas to explore. The third part of the book presents
technological aspects of advanced wireless technology, including
Artificial Intelligence driven steerable single beams, the 5G
wireless system and the various devices needed to construct the
system. While the books' main emphasis is theoretical understanding
and design with the basic tools needed to develop powerful computer
code for the smart antennas, it also provides the algorithms or
codes in a number of important cases to show how the smart antenna
computer codes may be developed using electromagnetic signal
processing. Artificial Intelligence (AI) driven beam forming is
presented using computationally fast and low-memory demanding
technique for AI beam forming is presented with the different
excitation functions available. The final chapter outlines certain
techniques to develop smart antenna algorithms and computer codes
for beginners, researchers, and engineers, and furthermore, to
implement a part of what was learnt, including AI techniques.
Clock synchronization is a mechanism for providing a standard
reference time to various devices across a distributed network. It
is critical in modern computer networks because every aspect of
managing, securing, planning, and debugging a network involves
determining when particular events happen. Global Positioning
Systems (GPS) are a popular mechanism for achieving
synchronization, but these are not always practical in network
systems. This monograph concentrates on a technique called Network
Time Distribution which is often more cost-effective than GPS-based
timing, as it does not require any dedicated hardware and can often
make use of the existing network resources for synchronizing
devices across the network. The technique uses a master/slave
construction to synchronize the time throughout devices on a
network. To do this, two-way message exchange is required which can
be subject to network delays. The authors present recent
developments to combat the degrading effects of stochastic delays
for clock synchronization protocols based on two-way message
exchange. While the techniques presented in the monograph apply to
many applications and any clock synchronization protocol based on
two-way message exchanges, the authors mainly discuss the
applications in the context of IEEE 1588 PTP standard applied to
telecommunication networks. Recent Advances in Clock
Synchronization for Packet-Switched Networks is of interest to
telecommunication engineers designing and building a broad range of
telecommunication systems. It provides an introduction to the
theory as well as practical results for implementation in
real-world systems.
Biomedical imaging is a vast and diverse field. There are a
plethora of imaging devices using light, X-rays, sound waves,
magnetic fields, electrons, or protons, to measure structures
ranging from nano to macroscale. In many cases, computer software
is needed to turn the signals collected by the hardware into a
meaningful image. These computer algorithms are similarly diverse
and numerous.This survey presents a wide swath of biomedical image
reconstruction algorithms under a single framework. It is a
coherent, yet brief survey of some six decades of research. The
underpinning theory of the techniques are described and practical
considerations for designing reconstruction algorithms for use in
biomedical systems form the central theme of each chapter. The
unifying framework deployed throughout the monograph models imaging
modalities as combinations of a small set of building blocks, which
identify connections between modalities. Thus, the user can quickly
port ideas and computer code from one to the next. Furthermore,
reconstruction algorithms can treat the imaging model as a black.
box, meaning that one algorithm can work for many modalities. This
provides a pragmatic approach to designing effective reconstruction
algorithms.This monograph is written in a tutorial style that
concisely introduces students, researchers and practitioners to the
development and design of effective biomedical image reconstruction
algorithms.
Many natural signals possess only a few degrees of freedom. For
instance, the occupied radio spectrum may be intermittently
concentrated to only a few frequency bands of the system bandwidth.
This special structural feature - signal sparsity - is conducive in
designing efficient signal processing techniques for wireless
networks. In particular, the signal sparsity can be leveraged by
the recently emerged joint sampling and compression paradigm,
compressed sensing (CS). This monograph reviews several recent CS
advancements in wireless networks with an aim to improve the
quality of signal reconstruction or detection while reducing the
use of energy, radio, and computation resources. The monograph
covers a diversity of compressive data reconstruction, gathering,
and detection frameworks in cellular, cognitive, and wireless
sensor networking systems. The monograph first gives an overview of
the principles of CS for the readers unfamiliar with the topic. For
the researchers knowledgeable in CS, the monograph provides
in-depth reviews of several interesting CS advancements in
designing tailored CS reconstruction techniques for wireless
applications. The monograph can serve as a basis for the
researchers intended to start working in the field, and altogether,
lays a foundation for further research in the covered areas.
Electromagnetic imaging has been a powerful technique in various
civil and military applications across medical imaging, geophysics,
and space exploration. The Nyquist-Shannon theory has formed the
basis for processing the signals in such systems. The advent of
Compressive Sensing techniques has enabled
low-dimension-model-based techniques to be used to break many of
the bottlenecks of the earlier technologies.
Low-dimensional-model-based electromagnetic imaging remains at its
early stage, and many important issues relevant to practical
applications need to be carefully investigated. In particular, this
is the era of big data with booming electromagnetic sensing, by
which massive data are being collected for retrieving very detailed
information of probed objects. This monograph gives an overview of
the low-dimensional models of structure signals, along with its
relevant theories and low-complexity algorithms of signal recovery.
It further reviews the recent advancements of
low-dimensional-model-based electromagnetic imaging in various
applied areas. It is a comprehensive introduction for researchers
and engineers wishing to understand the state-of-the-art of
electromagnetic imaging.
Modern day networking and computing systems rely increasingly on
knowing the location of the user. These include state-of-the art
technologies such as navigation of vehicles and robots, traffic
planning, or light control in smart home environments. In the
future, even more services will appear. The predominant
localization technology currently uses satellite signals but this
only works outdoors, is expensive, and consumes considerable power.
Alternative localization technologies have been recently developed
using optical, ultra-sound, or radar techniques. All of these
require additional hardware components to work effectively.
Radio-frequency (RF) localization is a technique that uses
communication signals to perform the task without the need for any
extra hardware. This monograph addresses the role of
synchronization in radio localization and provides a comprehensive
overview of recent developments suitable for current and future
practical implementations. The material is intended for both
theoreticians and practitioners and is written to be accessible to
novices while covering state-of-the-art topics of interest to
advanced researchers of localization and synchronization systems.
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