This document discusses different types of transmission media that can be used to transmit encoded data as energy, including copper wires, glass fibers, radio waves, satellites, and lasers. Copper wire is a mature technology that is inexpensive but has limited transmission speeds. Glass fiber can transmit data at higher speeds over longer distances but is more expensive. Radio waves, microwaves, and infrared can transmit data without a physical connection and are used for mobile and wireless transmissions. Satellites in different types of orbits can transmit data over long distances around the globe. The best transmission medium depends on the needs of speed, distance, mobility, and cost for each application.
What is Wireless Communication or Unguided Transmission MediaAhsan Rahim
What is Wireless Communication or What is Unguided Media | A Complete Introduction to the Wireless Communication Systems
In layman language it is communication in which information is transferred between two or more points without any wire. Transmitting/receiving voice and data using electromagnetic waves in open space. In wireless Communication the information from sender to receiver is carried over a well defined channel. Each channel has a fixed frequency bandwidth & capacity(bit rate) & Different channels can be used to transmit information in parallel and independently.
This video explains what Wireless Communication is & and why it's faster, effective & doesn't eat up our valuable IT resources as compare to Wired Communication or Guided Media
Watch Video Here : https://youtu.be/xs05l4GEbZA
Wireless Communication : https://www.slideshare.net/AhsanRahim1/wireless-communication-or-unguided-transmission-media/
Learn more about Wireless Communication at : https://www.slideshare.net/ahsanrahim1
Cloud Computing in 2017 : https://www.youtube.com/watch?v=1OuaAgvYWQo
Software Development Life Cycle Models : https://www.youtube.com/watch?v=3Lxnn0O3xaM
Subscribe to Science Villa on YouTube for exclusive updates on new videos : https://www.youtube.com/channel/UCKVvceV1RGXLz0GeesbQnVg
In this topic you will see:
Radio Wave System
History
Characteristics
Specifications
Advantages and Disadvantages
Three Devices (Mobile Device, Wi-Fi Device, GPS Device etc.)
What is Wireless Communication or Unguided Transmission MediaAhsan Rahim
What is Wireless Communication or What is Unguided Media | A Complete Introduction to the Wireless Communication Systems
In layman language it is communication in which information is transferred between two or more points without any wire. Transmitting/receiving voice and data using electromagnetic waves in open space. In wireless Communication the information from sender to receiver is carried over a well defined channel. Each channel has a fixed frequency bandwidth & capacity(bit rate) & Different channels can be used to transmit information in parallel and independently.
This video explains what Wireless Communication is & and why it's faster, effective & doesn't eat up our valuable IT resources as compare to Wired Communication or Guided Media
Watch Video Here : https://youtu.be/xs05l4GEbZA
Wireless Communication : https://www.slideshare.net/AhsanRahim1/wireless-communication-or-unguided-transmission-media/
Learn more about Wireless Communication at : https://www.slideshare.net/ahsanrahim1
Cloud Computing in 2017 : https://www.youtube.com/watch?v=1OuaAgvYWQo
Software Development Life Cycle Models : https://www.youtube.com/watch?v=3Lxnn0O3xaM
Subscribe to Science Villa on YouTube for exclusive updates on new videos : https://www.youtube.com/channel/UCKVvceV1RGXLz0GeesbQnVg
In this topic you will see:
Radio Wave System
History
Characteristics
Specifications
Advantages and Disadvantages
Three Devices (Mobile Device, Wi-Fi Device, GPS Device etc.)
A short ppt on unguided aka wireless networks with a follow up in a non technical manner so that it is easy to explain and answer questions upon it is not intended to be used as a ppt for teaching but for rather a student to give explanation on per sem projects .... enjoy
A short ppt on unguided aka wireless networks with a follow up in a non technical manner so that it is easy to explain and answer questions upon it is not intended to be used as a ppt for teaching but for rather a student to give explanation on per sem projects .... enjoy
Content personalisation is becoming more prevalent. A site, it's content and/or it's products, change dynamically according to the specific needs of the user. SEO needs to ensure we do not fall behind of this trend.
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldabaux singapore
How can we take UX and Data Storytelling out of the tech context and use them to change the way government behaves?
Showcasing the truth is the highest goal of data storytelling. Because the design of a chart can affect the interpretation of data in a major way, one must wield visual tools with care and deliberation. Using quantitative facts to evoke an emotional response is best achieved with the combination of UX and data storytelling.
Succession “Losers”: What Happens to Executives Passed Over for the CEO Job?
By David F. Larcker, Stephen A. Miles, and Brian Tayan
Stanford Closer Look Series
Overview:
Shareholders pay considerable attention to the choice of executive selected as the new CEO whenever a change in leadership takes place. However, without an inside look at the leading candidates to assume the CEO role, it is difficult for shareholders to tell whether the board has made the correct choice. In this Closer Look, we examine CEO succession events among the largest 100 companies over a ten-year period to determine what happens to the executives who were not selected (i.e., the “succession losers”) and how they perform relative to those who were selected (the “succession winners”).
We ask:
• Are the executives selected for the CEO role really better than those passed over?
• What are the implications for understanding the labor market for executive talent?
• Are differences in performance due to operating conditions or quality of available talent?
• Are boards better at identifying CEO talent than other research generally suggests?
Unguided (Wireless) Media network communication .pptxamare63
Collaborating with suppliers can help improve inventory management through better communication, information sharing, and coordinated planning. This can lead to reduced lead times, improved quality, and lower costs.
Current Approaches for Extending Range of Wi-Fi Networkijsrd.com
Nowadays, Wi-Fi networks have numerous emerging applications, ranging from backbone Wi-Fi networks, last-mile wireless networks and Wi-Fi direct networks. We can categorize the application into two types: (1) indoor wireless networks and (2) outdoor wireless networks. Indoor Wi-Fi networks include wireless networks and Wi-Fi direct networks, which usually have shorter links than outdoor wireless networks. Compared with indoor wireless networks, outdoor Wi-Fi networks attend as the network backbone or the infrastructure for Internet connection and usually have a longer transmission range. Besides, a data transmission usually traverses through multiple expectancy in outdoor wireless networks while it often takes only one expect in indoor wireless network. The distance limitations and data rates with Wi-Fi networks are more arduous to calculate due to varying data rates, capacity, interference, etc. In this paper, we discuss the various methodologies for increasing range of Wi-Fi network.
number of lines should be included in the last page of the paper aft.pdfsktambifortune
number of lines should be included in the last page of the paper after References.
Assessment- Marks will be awarded for compliance with format specifications, organization and
use of proper section headings and content.
Warning- While you are free to source and use materials from the Internet, you must not copy
these works verbatim. In addition you must not copy your classmate\'s work. The penalty for
copying for the offender and the author of the copied work is severe. Protect your paper from
plagiarism . Investigate modern Digital Satellite Communications Systems. Satellite
communication systems are used to relay radio transmissions between earth terminals. A typical
operational link involves an active satellite and two or more earth terminals. One station
transmits to the satellite on a frequency called the UP-LINK frequency. The Saellite then
amplifies the signal, converts it to the DOWN-LINK frequency, and transmits it back to earth.
Your paper titled Digital Satellite Communication Systems should conform to the specifications
and format gixen below Specifications and Format: Reference Report Size Paper Font
CSC422/2015-16 Not less than 3500 words and not more than 4000 A4 Times New Roman,
(Title: Size 14, Heading: Size 13, Sub heading: Size 12, Text: Size 9) Heading Frt Single
Column Center Justification Title on a new Line Name on a new line Address on a new line
Reference on a new line Double Column, ruil Justitication Left2o5m. Right2.5cm. Top 2.5cm
and Bottom 2.5cm Single Page Format Page Margin Line Spacing A sample of the heading is
shown below Digital Satellite Communication Systems by Kaxade Adeleke Matriculation
Number 120805012) Department ofCompuer Sciences Uhiversity of Lagas (Ref CSC422/2014-
15) Your paper should have the following headings: Abstract, Introduction, Other Sections,
Conclusion, References and Document Statistics. Do not use a separate page for your title. The
coverage of the topic with well thought sections carries the bulk of awarded marks. Therefore,
organize your sections carefully for maximum coverage of topic and good effect Document
statistics - Word count, number of pages, number of paragraphs and
Solution
ANSWER-A communicaton satellite is an artificial satellite that relays and amplifies radio
telecommunications signals via a transponder; it creates acommunication channel between a
source transmitter and a receiver at different locations on Earth. Communications satellites are
used for television, telephone, radio, internet, and military applications. There are over 2,000
communications satellites in Earth’s orbit, used by both private and government
organizationsWireless communication uses electromagnetic waves to carry signals. These waves
require line-of-sight, and are thus obstructed by the curvature of the Earth. The purpose of
communications satellites is to relay the signal around the curve of the Earth allowing
communication between widely separated points.[2] Communications satellites use .
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
2. Transmission: The BasicTransmission: The Basic
Encode data as energy and transmit energyEncode data as energy and transmit energy
Decode energy at destination back into dataDecode energy at destination back into data
Energy can be electrical, light, radio, soundEnergy can be electrical, light, radio, sound
Each form of energy has different propertiesEach form of energy has different properties
and requirements for transmissionand requirements for transmission
3. Transmission MediaTransmission Media
Transmitted energy is carried through someTransmitted energy is carried through some
sort of mediumsort of medium
Transmitter encodes data as energy andTransmitter encodes data as energy and
transmits energy through mediumtransmits energy through medium
Requires special hardware for dataRequires special hardware for data
encodingencoding
4. Copper WiresCopper Wires
Twisted pair uses two wiresTwisted pair uses two wires
Coaxial cable includes shield for improvedCoaxial cable includes shield for improved
performanceperformance
5. Glass FibersGlass Fibers
Thin glass fiber carries light with encodedThin glass fiber carries light with encoded
datadata
Plastic jacket allows fiber to bend (some!)Plastic jacket allows fiber to bend (some!)
without breakingwithout breaking
Fiber is very clear and designed to reflectFiber is very clear and designed to reflect
light internally for efficient transmissionlight internally for efficient transmission
6. Glass FibersGlass Fibers
Light emitting diode (LED) or laser injectsLight emitting diode (LED) or laser injects
light into fiberlight into fiber
Light sensitive receiver at other endLight sensitive receiver at other end
translates light back into datatranslates light back into data
7. RadioRadio
Data transmitted using radio wavesData transmitted using radio waves
Energy travels through the air rather thanEnergy travels through the air rather than
copper or glasscopper or glass
Conceptually similar to radio, TV, cellularConceptually similar to radio, TV, cellular
phonesphones
8. RadioRadio
Can travel through walls and through anCan travel through walls and through an
entire buildingentire building
Can be long distance or short distanceCan be long distance or short distance
Long distanceLong distance
satellite relaysatellite relay
Short distanceShort distance
wireless computer networkwireless computer network
9. SatellitesSatellites
A communication satellite in orbit aroundA communication satellite in orbit around
the earth can provide a network connectionthe earth can provide a network connection
across an oceanacross an ocean
10. SatellitesSatellites
A single satellite usually contains multipleA single satellite usually contains multiple
transponders (typically 6-12)transponders (typically 6-12)
Each transponder consists of a radioEach transponder consists of a radio
receiver and transmitterreceiver and transmitter
Each transponder uses a different radioEach transponder uses a different radio
frequency (I.e., channel)frequency (I.e., channel)
multiple communications can proceedmultiple communications can proceed
simultaneously and independentlysimultaneously and independently
11. Geosynchronous SatellitesGeosynchronous Satellites
Place in an orbit that isPlace in an orbit that is exactlyexactly synchronizedsynchronized
with the rotation of the earthwith the rotation of the earth
Geostationary Earth Orbit (GEO)Geostationary Earth Orbit (GEO)
Distance required for geosynchronous orbitDistance required for geosynchronous orbit
is 36,000 km or 20,000 milesis 36,000 km or 20,000 miles
known as high earth orbitknown as high earth orbit
The entire 360-degree circle above theThe entire 360-degree circle above the
equator can only hold 45-90 satellitesequator can only hold 45-90 satellites
because satellites need to be separated to avoidbecause satellites need to be separated to avoid
interferenceinterference
12. Low Earth Orbit SatellitesLow Earth Orbit Satellites
Orbit a few hundred miles above the earthOrbit a few hundred miles above the earth
(200-400 miles)(200-400 miles)
Period of rotation is faster than the rotationPeriod of rotation is faster than the rotation
of the earthof the earth
DisadvantagesDisadvantages
can only be used during the time its orbit passescan only be used during the time its orbit passes
between two ground stationsbetween two ground stations
continuously moving the ground stations socontinuously moving the ground stations so
they point directly at the satellitesthey point directly at the satellites
13. Low Earth Orbit Satellite ArraysLow Earth Orbit Satellite Arrays
A set of satellites in low earth orbitsA set of satellites in low earth orbits
Allow continuous communications throughAllow continuous communications through
satellites in low earth orbitsatellites in low earth orbit
at least one satellite is available at any timeat least one satellite is available at any time
around 66 satellites are required to providearound 66 satellites are required to provide
service over the entire surface of the earthservice over the entire surface of the earth
14. MicrowaveMicrowave
High frequency radio wavesHigh frequency radio waves
Unidirectional, for point-to-pointUnidirectional, for point-to-point
communicationcommunication
Antennas mounted on towers relayAntennas mounted on towers relay
transmitted datatransmitted data
15. InfraredInfrared
Infrared light transmits data through the airInfrared light transmits data through the air
similar to technology used in TV remotesimilar to technology used in TV remote
controlcontrol
Can propagate throughout a roomCan propagate throughout a room
(bouncing off surfaces)(bouncing off surfaces)
but will not penetrate wallsbut will not penetrate walls
Becoming common in personal digitalBecoming common in personal digital
assistants (PDAs) and portable computersassistants (PDAs) and portable computers
16. LaserLaser
Unidirectional, like microwaveUnidirectional, like microwave
Higher speed than microwaveHigher speed than microwave
Uses laser transmitter and photo-sensitiveUses laser transmitter and photo-sensitive
receiver at each endreceiver at each end
Point-to-point, typically between buildingsPoint-to-point, typically between buildings
17. Choosing a MediumChoosing a Medium
Copper wireCopper wire
mature technologymature technology
rugged and inexpensive;rugged and inexpensive;
maximum transmission speed is limitedmaximum transmission speed is limited
Glass fiberGlass fiber
higher speedhigher speed
spans longer distancesspans longer distances
requires only single fiberrequires only single fiber
more expensive; less ruggedmore expensive; less rugged
18. Choosing a MediumChoosing a Medium
Radio and microwave don't require physicalRadio and microwave don't require physical
connectionconnection
Radio and infrared can be used for mobileRadio and infrared can be used for mobile
connectionsconnections
Laser also does not need physicalLaser also does not need physical
connection and supportsconnection and supports
higher speedshigher speeds