-
If you would like to follow along with some of the steps outlined in this book, we recommend that you
deploy Live Communications Server 2005 SP1 on a physical or virtual server running Microsoft
Windows Server 2003. To run Communicator 2005, you will need a physical or virtual PC running
Windows XP or Windows Server 2003. To fully test Microsoft Office integration with Communicator
2005, you need to be running Microsoft Office 2003 with Service Pack 2.
標簽：
Communications
Professional
Server
Live
上傳時間：
2020-05-31
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The investigation of the propagation channel is becoming more and more important in mod-
ern wireless communication. The demand for spectral efficiency motivates exploitation of
all channels that can possibly be used for communications. Nowadays, a common trend for
designing physical layer algorithms is to adapt the transceiving strategy, either by maximizing
the diversity gains or by utilizing the coherence of the channels to improve the signal-to-noise
power ratio.
標簽：
Characterization
Propagation
Channel
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2020-05-31
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Wireless means different things to different people. For this book, it refers
to the radio systems that provide point-to-point, point-to-multipoint, and
Earth-space communications over transmission links that propagate outside
buildings through the lower atmosphere. Wireless systems are being built
that provide data transmission between computers and other devices on
one’s own desk. These are part of the wireless world but not the part where,
except for interference perhaps, the atmosphere has any influence. The intent
of this book is to provide a description of the physical phenomena that can
affect propagation through the atmosphere, present sample measurements
and statistics, and provide models that system designers can use to calculate
their link budgets and estimate the limitations the atmosphere may place on
their design.
標簽：
Communication
Propagation
Handbook
Wireless
for
上傳時間：
2020-05-31
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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.
標簽：
Telecommunications
Essentials
上傳時間：
2020-06-01
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Wireless communications has become a field of enormous scientific and economic interest. Recent
success stories include 2G and 3G cellular voice and data services (e.g., GSM and UMTS), wireless
local area networks (WiFi/IEEE 802.11x), wireless broadband access (WiMAX/IEEE 802.16x), and
digital broadcast systems (DVB, DAB, DRM). On the physical layer side, traditional designs typically
assume that the radio channel remains constant for the duration of a data block. However, researchers
and system designers are increasingly shifting their attention to channels that may vary within a block.
In addition to time dispersion caused by multipath propagation, these rapidly time-varying channels
feature frequency dispersion resulting from the Doppler effect. They are, thus, often referred to as
being “doubly dispersive.”
標簽：
Time-Varying
Channels
上傳時間：
2020-06-01
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-
The field of cyber security, or information security, or information
assurance, depending on your preference, is an interdisciplinary one.
It is part computer science, part statistics, part psychology, part law,
and a part of many other fields. Moreover, any cyber security practi-
tioner needs to know what he or she is protecting and where to pri-
oritize. Just as someone should not spend $100 to protect something
worth $10, one cannot be blind to the other disciplines.
標簽：
Security
Smart
Grid
上傳時間：
2020-06-07
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-
Sensors are points ofcontact betweenthe material world ofatoms, mass, andenergy
and the seemingly immaterial world of information, computation, and cognition.
Linking these two domains more tightly yields all sorts of practical benefits, such as
improvedinputdevicesforcomputers,moreeffectivemedicaldevices(implantedor
worn), more precise agricultural operations, better monitored buildings or bridges,
more secure payment systems, and more reliable sensor–actuator control systems.
There are many settings in which tighter coupling between digital and physical
planes can enhance safety, security, performance, and reliability.
標簽：
Computational
RFID
上傳時間：
2020-06-08
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The next avatar of the Internet will revolutionize our world. In time, it will
provide us a universal remote control, enabling us to monitor and control
physical objects located anywhere on the planet, using a smart phone. It will
make the universe around us programmable, allowing us to script the behav-
ior of physical objects with electronic commands. This book is about such
an emerging new version of the Internet.
標簽：
Infrastructure
Construction
Design
RFID
and
an
of
上傳時間：
2020-06-08
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-
Radio frequency identification (RFID) is a type of automatic identification systems
which has gained popularity in recent years for being fast and reliable in keeping
track of the individual objects. In RFID systems, contactless object identification
is achieved using radio signals without the need for physical contact as the case
with other existing identification technologies such as barcodes. Therefore, a huge
number of items can be identified in a short amount of time with high reliability
and low cost which makes the RFID technology very attractive for a wide range of
applications such as supply chain management, e-health, monitoring humans, pets,
animals, and many other objects, toll control, and electrical tagging. Furthermore,
RFID technology eliminates the human error and reduces the total cost of the
products.
標簽：
Security
RFID
上傳時間：
2020-06-08
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Radio frequency identification (RFID) and Wireless sensor networks (WSN) are
the two key wireless technologies that have diversified applications in the present
and the upcoming systems in this area. RFID is a wireless automated recognition
technology which is primarily used to recognize objects or to follow their posi-
tion without providing any sign about the physical form of the substance. On the
other hand, WSN not only offers information about the state of the substance
and environment but also enables multi-hop wireless communications.
標簽：
Architecture
Integrated
RFID-WSN
上傳時間：
2020-06-08
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