Field of telecommunications has evolved from crudest form of communications to electrical, radio and electro-optical communications. From manual exchange like local battery, central battery exchange, to crossbar switching, director system and to common control systems, telephone communications had started evolving to cater to better and better specifications and needs. Touch tone dial telephone opened a new horizon in the field of end to end signalling. Then came computerised stored program control systems, various multiplexing techniques. With increase in traffic there was a need to study traffic and blocking capabilities....
Field of telecommunications has evolved from crudest form of communications to electrical, radio and electro-optical communications. From manual exchange like local battery, central battery exchange, to crossbar switching, director system and to common control systems, telephone communications had started evolving to cater to better and better specifications and needs. Touch tone dial telephone opened a new horizon in the field of end to end signalling. Then came computerised stored program control systems, various multiplexing techniques. With increase in traffic there was a need to study traffic and blocking capabilities....
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
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Hello everyone. This is a short presentation on path loss and shadowing. I have not covered all the topics but a brief idea is given on path loss and wireless channel propagation models.
Hope you find it useful.
Thanks
Introduction to basics of wireless networks such as
• Radio waves & wireless signal encoding techniques
• Wireless networking issues & constraints
• Wireless internetworking devices
This presentation will explain about the need for modulation in communication system. We made this presentation as our group assignment in Analog and Digital Communication System course in MIIT.
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
We connect Students who have an understanding of course material with Students who need help.
Benefits:-
# Students can catch up on notes they missed because of an absence.
# Underachievers can find peer developed notes that break down lecture and study material in a way that they can understand
# Students can earn better grades, save time and study effectively
Our Vision & Mission – Simplifying Students Life
Our Belief – “The great breakthrough in your life comes when you realize it, that you can learn anything you need to learn; to accomplish any goal that you have set for yourself. This means there are no limits on what you can be, have or do.”
Like Us - https://www.facebook.com/FellowBuddycom
Hello everyone. This is a short presentation on path loss and shadowing. I have not covered all the topics but a brief idea is given on path loss and wireless channel propagation models.
Hope you find it useful.
Thanks
Introduction to basics of wireless networks such as
• Radio waves & wireless signal encoding techniques
• Wireless networking issues & constraints
• Wireless internetworking devices
This presentation will explain about the need for modulation in communication system. We made this presentation as our group assignment in Analog and Digital Communication System course in MIIT.
I prepared these slides for FSC BSC BS Computer science students. it is very simple in understanding and reading.
a complete guide to network and protocols
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
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Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
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I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
DevOps and Testing slides at DASA ConnectKari Kakkonen
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My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
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The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
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Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
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The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
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In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
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Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
2. Definitions of Communication
ď‚— The word itself is derived from the Latin verb communicare,
which means "to share" or "to make common".
ď‚— Communication is the transfer of information from one place
to another.
ď‚— Simply: To connect source & destination.
3. Definitions of Communication
ď‚— For a best communication, connection should be:
o As efficiently as possible
o With as much fidelity/reliability as possible
o As securely as possible
4. Communication System
ď‚— Communication Systems became essential, and gained an
important position in our lives, we can touch its effect in
every aspects of life.
ď‚— Examples: Networks, internet, satellites, mobile phone
system, GPS, Radar ….. etc).
5. Parts of Communication System
ď‚— Communication systems consist of five parts:
Source, Transmitter, Channel, Receiver, and Destination.
Shannons Model of Communication
6. Parts of Communication System
ď‚— Source (input signal):
o The source originates a message, such as (human voice, the
television picture, data).
o If the data is non-electrical (analogue) it must be converted by an
input transducer (microphone, camera…) into an electrical
waveform (baseband modulation) referred to as the baseband
signal or message signal.
7. Parts of Communication System
ď‚— Transmitter (TX):
o The transmitter modifies the base-band signal for efficient
transmission.
o Characteristics: Modulation, amplification, transmission frequency
(TX), transmission power, coding...
o MW modem,WiFi Card, Bluetooth Card, RF transmitter..
8. Parts of Communication System
ď‚— Channel:
o The Channel is a medium, such as wire, coaxial cable, a
waveguide, an optical fiber or a radio link (air interface), through
which the transmitter output is sent.
o Channel characteristics, ability for transmission, noise,
interference, power needed, fading, multipath...
9. Parts of Communication System
ď‚— Receiver (RX):
o The receiver reprocesses the signal received from the channel by
undoing the signal modifications made at the transmitter and the
channel.
o Characteristics: Demodulation, receiver frequency (RX),
receiving power (threshold), decoding...
o MW modem,WiFi Card, Bluetooth Card, RF receiver..
10. Parts of Communication System
ď‚— Destination (output signal):
The destination is the unit to which the message is communicated.
The receiver output is fed to the output transducer (Monitor,
Speaker…), which converts the electrical signal to its original form.
11. Parts of Communication System
ď‚— Transmitted/Received Signal
o Modulated signal or encapsulated signal.
This signal is modified by the transmitter/receiver
o Examples:
Ethernet frame:
MW frame:
12. Parts of Communication System
ď‚— Transceiver
Is a One devices (transmitter/receiver) that do the role of
the two devices.
o Bidirectional communication.
o Higher Cost!
13. Modes of Channel Operation
ď‚— Simplex:
o Simplex is one direction of communication, it requires only one line of communication.
o Simplex channels are not often used in communication systems because it is not possible to send back
error or control signals to the transmit end.
o A good example would be TV or Radio
ď‚— Half-Duplex:
o Two directions of communication (can send & receive) but only one direction is allowed through at a time.
o Only one end transmits at a time, the other end receives. In addition, it is possible to send feedbacks.
o An advantage is that the single lane is cheaper then the double lane (less connecters).
o Example of half-duplex is talk-back radio, and CB Radio (Citizens Band).
ď‚— Full Duplex:
o Two ways of communication with data can travel in both directions simultaneously. This is the most
common channel operation in communication systems and networking.
o It can perform feedbacks.
o The most expensive (special devices and more connecters, as in case of fiber optics SFPs)
o Example, is mobile phone line.
18. Our Course
Data Transmission
RF, Bluetooth,
XBEE, Wi-Fi,
GSM
19. Transmission
Technology
RF
Bluetooth
XBEE
Wi-Fi
GSM
o All transmission methods are using TX/RX modules.
o GSM, is not P-t-P directly connected channel (over existing mobile network)
24. Transmission
How to Transmit?
Radio Link (Microwave)
+ Rapid installation
+ No "right of way" required
-limited capacity Up to 1,2 GB/s IP capacity
- Sensitive to ambient disturbance
(rain and multipath fading)
- Radio license fees
Fiber Optics
+ High transmission capacity
+ High transmission quality
+ Resistant to ambient disturbance
+Maximum distances 100 up 150 km
between repeaters
-Long implementation time
28. Signal Bandwidth
The bandwidth of a composite signal is the difference between the highest and the
lowest frequencies contained in that signal.
29. History of communication systems
Advanced electrical and electronic signals::
1893: Wireless telegraphy
1896: Radio
1927: Television
1927: First commercial radio-telephone service, U.K.–U.S.
1936: World's first public videophone network
1946: Limited capacity Mobile Telephone Service for automobiles
1962: Commercial telecommunications satellite
1964: Fiber optical telecommunications
1969: Computer networking
1973: First modern-era mobile (cellular) phone
1981: First mobile (cellular) phone network
1982: SMTP email
1983: Internet
1998: Mobile satellite hand-held phones
2003: Skype Internet telephony