Topics in Digital Communications Digital communication system advantages and disadvantages Digital communication system classification Digitization of analog signals Digital transmission systems Data communication systems Integrated Services Digital Network and other advanced digital communication systems.
A couple of years ago, my then eleven-year-old son ran his first marathon. I watched from the
curb as he crossed mile twenty-four. Together we jogged the last few miles of the race, and when
he finally saw the finish line, he sprinted toward it, leaving me behind. He made it look so easy.
“Next year, Mom,” he shouted over his shoulder, “we cross this line together.”
I am now training to run my second marathon and my son will be running his third.
You just never know where inspiration will come from.
The new digital radio system DAB (Digital Audio Broadcasting, nowadays often
called Digital Radio) is a very innovative and universal multimedia broadcast system
which will replace the existing AM and FM audio broadcast services in many parts of
the world in the future. It was developed in the 1990s by the Eureka 147/DAB
project. DAB is very well suited for mobile reception and provides very high robustness
against multipath reception. It allows use of single frequency networks (SFNs)
for high frequency efficiency....
There are many occasions when data need to be transmitted over a voice communication network.
Many people use a computer to connect to their Internet Service Provider via the telephone lines to
transmit and receive data, check their email, surf the Web, etc.
Telephone networks were originally built for human speech, not for computer data and is unsuitable for
digital communication in its raw form.
The digital economy—defined by the changing characteristics of information,
computing, and communications—is now the preeminent driver
of economic growth and social change. With a better understanding of
these fundamental transformations, we can make wiser decisions—whether
we are investing in research, products, or services, or are adapting our
laws and policies to the realities of a new age.
This thesis is founded on the global growth of the service sector and its
significance for society as a whole and for the individual human being. In
the last decade, technology has changed the way services are created,
developed and delivered in remarkable ways. The focus of the thesis is
technology in interplay with humans and organisations and the socioeconomic-
technical systems in which digital services play a central role.
Suppose that you'd like to provide a service to the public or to some business
partners: They can send you two strings and you will concatenate them and
return the string. Of course, in the real world you provide a more useful service.
There are several major requirements: First, the users may be using different
languages (Java, C# and etc.) and using different platforms (Windows, Linux
and etc.). Your service must be accessible by different languages and
platforms. Second, they will call your service across the Internet and there may
be firewalls in between.
Featuring a strong emphasis on the fundamentals underlying contemporary logic design using hardware description languages, synthesis, and verification, this book focuses on the ever-evolving applications of basic computer design concepts with strong connections to real-world technology. Treatment of logic design, digital system design, and computer design. Ideal for self-study by engineers and computer scientists.
will consider authentication functions
developed to support application-level authentication & digital signatures
will consider Kerberos – a private-key authentication service
then X.509 directory authentication service
Objectives of Chapter 13: To define a digital signature; to define security services provided by a digital signature; to define attacks on digital signatures; to discuss some digital signature schemes, including RSA, ElGamal, Schnorr, DSS, and elliptic curve; to describe some applications of digital signatures.
(BQ) Part 1 book "Information systems today - Managing in the digital world" has contents: Managing in the digital world, gaining competitive advantage through information systems, managing the information systems infrastructure and services, enabling commerce using the internet, enhancing collaboration using web 2.0.
Digital Signature schemes are commonly used as primitives in cryptographic protocols that provide other services including entity authentication, authenticated key transport, and authenticated key agreement.
Where is "Digital Economil 2000" present on information technology and the new economy, electronic commerce the leading edge of the digital economy, information technology industries, the information technology workforce, trade in information technology goods and services,...
Chapter 5 provides knowledge of internet hardware, software and communications. This chapter includes contents: Structure of the internet, servers, communications media, storage area networks (SANs), digital subscriber lines (DSL), broadband, integrated services digital network (ISDN),...
The advancement of information and communications technology, especially the Internet, has created an opportunity to improve the administrative efficiency and service quality in governments of many nations.
Chapter 13 - News gathering and reporting. This chapter includes contents: Deciding what is news, news reporting in the digital age, categories of news and reporting, the news flow, the wire services, media differences in news coverage, readership and viewership.
GSM (Global System for Mobile Communications), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe technologies for second generation digital cellular networks. Developed as a replacement for first generation analog cellular networks, the GSM standard originally described a digital, circuit switched network optimized for full duplex voice telephony. The standard was expanded over time to include first circuit switched data transport, then packet data transport via GPRS (General Packet Radio Services)....