-
The PAST two decades have witnessed the introduction and unprecedented growth of cellular
mobile telephony and wireless communications. Numerous wireless access technologies
have been introduced in the mobile communications market. While some have flourished
and formed the basis of successful manufacturing and network operator businesses, many
have lived only for a short time and disappeared.
標簽：
Communications
Broadband
Wireless
Business
上傳時間：
2020-05-26
上傳用戶：shancjb
-
During the PAST two decades, technological development related to telecommuni-
cation technologies has allowed organizations of all types and size to be able to de-
velop effective networking applications in support of information management. Fur-
thermore, telecommunication technologies combined with computer technology have
created the foundation of modern information technology which has affected all as-
pects of societal and organizational functions in our modern world.
標簽：
Telecommunications
Cases
on
上傳時間：
2020-05-26
上傳用戶：shancjb
-
Over the PAST few decades, wireless communications and networking have witnessed an
unprecedented growth, and have become pervasive much sooner than anyone could have
predicted. For example, cellular wireless networks are expected to become the dominant
and ubiquitous telecommunication means in the next few decades. The widespread
success of cellular and WLAN systems prompts the development of advanced wireless
systems to provide access to information services beyond voice such as telecommuting,
video conferencing, interactive media, real-time internet gaming, and so on, anytime
and anywhere.
標簽：
Compressive
Networks
Wireless
Sensing
for
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Communication today is not as easy as it was in the PAST. Protecting numerous com-
munication services, which are operating in the same or adjacent communication
channels, has become increasingly challenging. Communication systems have to be
protected from both natural and manmade interference. Electromagnetic interfer-
ence can be radiated or conducted, intentional or unintentional.
標簽：
Communication
Protection
Systems
EMI
for
上傳時間：
2020-05-27
上傳用戶：shancjb
-
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.
標簽：
Short-Range
Essentials
Wireless
of
上傳時間：
2020-05-27
上傳用戶：shancjb
-
During the PAST two decades there has been a substantial growth in research in
wireless communications. The number of journals published from various parts of
the world catering to the research community has grown exponentially. Despite
such a growth, the engineering community still needs more information so as to
thoroughly comprehend wireless channel characteristics. What specifically must be
understood are the effects of channel degradation brought on by statistical fluctua-
tions in the channel.
標簽：
Shadowing
Wireless
Systems
Fading
and
in
上傳時間：
2020-05-27
上傳用戶：shancjb
-
During the PAST decade, many wireless communication techniques have been
developedto achievevariousgoals suchas higherdata rate,morerobustlink quality,
and higher number of users in a given bandwidth. For wireless communication
systems, depending on the availability of a feedback link, two approaches can be
considered: namely open and closed loop. Open loop communication system that
does not exploit the channel knowledge at the transmitter is now well understood
from both a theoretical and practical point of view.
標簽：
Communication
Strategies
Feedback
Wireless
for
上傳時間：
2020-05-27
上傳用戶：shancjb
-
The field of digital communication has evolved rapidly in the PAST few
decades, with commercial applications proliferating in wireline communi-
cation networks (e.g., digital subscriber loop, cable, fiber optics), wireless
communication (e.g., cell phones and wireless local area networks), and stor-
age media (e.g., compact discs, hard drives). The typical undergraduate and
graduate student is drawn to the field because of these applications, but is
often intimidated by the mathematical background necessary to understand
communication theory.
標簽：
Communication
Fundamentals
Digital
of
上傳時間：
2020-05-27
上傳用戶：shancjb
-
The writing of this book was prompted by two main developments in wireless
communications in the PAST decade. First is the huge surge of research activities in
physical-layer wireless communication theory. While this has been a subject of study
since the 60’s, recent developments in the field, such as opportunistic and multi-input
multi-output (MIMO) communication techniques, have brought completely new per-
spectives on how to communicate over wireless channels.
標簽：
Communication
Fundamentals
Wireless
of
上傳時間：
2020-05-27
上傳用戶：shancjb
-
When digital media is perceived only as a tool to deliver content the potential for
using its affordances to explore meaning is lost. Rather than seeing media only as
an access point, we can view it as a way to enhance the expressiveness of content.
Today blogs, wikis, messaging, mash-ups, and social media (Facebook, Twitter,
YouTube and others) offer authors ways to create narrative meaning that refl ects
our new media culture. We can look to the PAST for similarities and parallels to
better understand how to use social media as a creative tool with which to
dialogue, collaborate, and create interactive narratives.
標簽：
Interactivity
Social
Media
in
上傳時間：
2020-05-27
上傳用戶：shancjb
