-
The objective of this book is to allow the reader to predict the received
signal power produced by a particular radio transmitter. The first two
chapters examine propagation in free space for point-to-point and
point-to-area transmission, respectively. This is combined with a dis-
cussion regarding the characteristics of antennas for various purposes. In
chapter 3, the effect of obstacles, whether buildings or mountains, is
discussed and analytical methods, whereby the strength of a signal is the
shadow of an obstacle can be predicted, are presented.
標(biāo)簽：
Propagation
ESSENTIALS
Radio
Wave
of
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2020-05-27
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-
Over the past ten years there has been a revolution in the devel-
opment and acceptance of mobile products. In that period, cel-
lular telephony and consumer electronics have moved from the
realm of science fiction to everyday reality. Much of that revolu-
tion is unremarkable – we use wireless, in its broadest sense, for
TV remote controls, car keyfobs, travel tickets and credit card
transactions every day. At the same time, we have increased the
number of mobile devices that we carry around with us. However,
in many cases the design and function of these and other static
products are still constrained by the wired connections that they
use to transfer and share data.
標(biāo)簽：
Short-Range
ESSENTIALS
Wireless
of
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2020-05-27
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-
Wirelessmeshnetworkingisahotandgrowingtopic,stillinitsinfancyin
some ways, whilst already shown to be capable in others. From a military
beginning, mesh networks moved to civilian use and are now being
deployed worldwide as both local area networks (LANs) and metro-
politan area networks (MANs). However, these deployments are still
‘leading edge’ and it is not yet clear what the most enduring applications
of mesh will be – particularly as the market moves from early adopters
towards widespread take up.
標(biāo)簽：
ESSENTIALS
Networking
Wireless
Mesh
of
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2020-05-27
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This book is an entry-level text on the technology of telecommunications. It has been
crafted with the newcomer in mind. The eighteen chapters of text have been prepared
for high-school graduates who understand algebra, logarithms, and basic electrical prin-
ciples such as Ohm’s law. However, many users require support in these areas so Appen-
dices A and B review the ESSENTIALS of electricity and mathematics through logarithms.
標(biāo)簽：
Telecommunications
Fundamentals
1st
of
ed
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2020-05-27
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This book is an entry-level text on the technology of telecommunications. It has been
crafted with the newcomer in mind. The twenty-one chapters of text have been prepared
for high-school graduates who understand algebra, logarithms, and the basic principles of
electricity such as Ohm’s law. However, it is appreciated that many readers require support
in these areas. Appendices A and B review the ESSENTIALS of electricity and mathematics
up through logarithms. This material was placed in the appendices so as not to distract
from the main theme, the technology of telecommunication systems. Another topic that
many in the industry find difficult is the use of decibels and derived units. Appendix C
provides the reader a basic understanding of decibels and their applications. The only
mathematics necessary is an understanding of the powers of ten
標(biāo)簽：
Telecommunications
Fundamentals
2nd
of
ed
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2020-05-27
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-
Mobile and wireless application development has come a long way in the past few
years. It has progressed beyond the hype of wireless Web applications for consumers
to the reality of high-value mobile applications for corporate users. Opportunities
abound for creating new mobile and wireless applications that provide vital benefits to
any business. A sampling of these benefits includes increased worker productivity,
reduced processing costs, heightened accuracy, and competitive advantage. In contrast
is the concern that developing mobile and wireless applications will involve many new
technologies and concepts that many corporate developers are still learning to use.
標(biāo)簽：
ESSENTIALS
Wireless
Mobile
Design
and
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2020-05-30
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-
Ever since ancient times, people continuously have devised new techniques and
technologies for communicating their ideas, needs, and desires to others. Thus,
many forms of increasingly complex communication systems have appeared
over the years. The basic motivations behind each new one were to improve the
transmission fidelity so that fewer errors occur in the received message, to
increase the transmission capacity of a communication link so that more infor-
mation could be sent, or to increase the transmission distance between relay sta-
tions so that messages can be sent farther without the need to restore the signal
fidelity periodically along its path.
標(biāo)簽：
Communications
ESSENTIALS
Optical
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2020-05-31
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-
In this updated and expanded edition of her excellent telecommunications primer,
Lili explains in just the right detail everything you need to know to become
fluent in this most important and fascinating industry. Besides including a
satisfying amount of expert technical detail, the book also discusses equally
crucial aspects of how communications technology affects society, culture, and
politics. Electronic communications is changing the world for the better; learn
from Lili's expertise how you, too, can participate in the revolution." Steve Riley, senior security strategist, Microsoft
Corporation
標(biāo)簽：
Telecommunications
ESSENTIALS
Global
Source
上傳時(shí)間：
2020-06-01
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-
I love telecommunications. It is powerful and it empowers, with
far-reaching consequences. It has demonstrated the potential to transform
society and business, and the revolution has only just begun. With the invention
of the telephone, human communications and commerce were forever changed: Time
and distance began to melt away as a barrier to doing business, keeping in touch
with loved ones, and being able to immediately respond to major world events.
Through the use of computers and telecommunications networks, humans have been
able to extend their powers of thinking, influence, and productivity, just as
those in the Industrial Age were able to extend the power of their muscles, or
physical self, through use of heavy machinery.
標(biāo)簽：
Telecommunications
ESSENTIALS
上傳時(shí)間：
2020-06-01
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-
The information age is exploding around us,
giving us access to dizzying amounts of data the instant it becomes available.
Smart phones and tablets provide an untethered experience that offers stream-
ing video, audio, and other media formats to just about any place on the planet.
Even people who are not “computer literate” use Facebook to catch up with
friends and family, use Google to research a new restaurant choice and print
directions to get there, or Tweet their reactions once they have sampled the
fare. The budding Internet-of-things will only catalyze this data eruption.
The infrastructure supporting these services is also growing exponentially,
and the technology that facilitates this rapid growth is virtualization.
標(biāo)簽：
Virtualization
ESSENTIALS
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2020-06-01
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