This document provides an overview of wireless communication technologies. It discusses why wireless communication is useful by allowing freedom from wires and global coverage. It defines wireless communication as transmitting voice and data using electromagnetic waves. It then covers typical frequency ranges used, how communication takes place, types of wireless communication including radio transmission and infrared waves. Current wireless systems like cellular, wireless LANs, and satellite systems are described along with Bluetooth, NFC, Wi-Fi and Li-Fi technologies.
Global system for mobile communication(GSM)Jay Nagar
~Introduction
~GSM Architecture
~GSM Entities
~SMS Service In GSM
~Call Routing In GSM
~PLMN Interfaces
~GSM Addresses and Identifiers
~Network aspects in GSM
~Handover
~Mobility Management
~GSM Frequency Allocation
~Authentication and Security In GSM
Global system for mobile communication(GSM)Jay Nagar
~Introduction
~GSM Architecture
~GSM Entities
~SMS Service In GSM
~Call Routing In GSM
~PLMN Interfaces
~GSM Addresses and Identifiers
~Network aspects in GSM
~Handover
~Mobility Management
~GSM Frequency Allocation
~Authentication and Security In GSM
Examples of wireless communication systems, paging systems, cordless telephone systems, cellular telephone systems,evolution of mobile phone, MSC, MTSO, PSTN, Mobile communication, wireless link, subscriber,
This presentation would clear your basic concept on cellular network/communication....although it is recommend to read about various multiplexing techniques as prerequisites....For further knowledge please read more from books. I hope its useful in someway.
Examples of wireless communication systems, paging systems, cordless telephone systems, cellular telephone systems,evolution of mobile phone, MSC, MTSO, PSTN, Mobile communication, wireless link, subscriber,
This presentation would clear your basic concept on cellular network/communication....although it is recommend to read about various multiplexing techniques as prerequisites....For further knowledge please read more from books. I hope its useful in someway.
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
History, Basic concepts of wireless communication, challenges in wireless communication, cellular communication, performance criteria, wireless communication standars, how call is made?
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
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Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Quality defects in TMT Bars, Possible causes and Potential Solutions.
Wireless communication by abhishek mmahajan
1. SHREEJEE INSTITUTE OF
TECHNOLOGY AND MANAGEMENT
Wireless Communication
• Guided By:- Mr.Prakash
Singh Panwar
• By:- Krishna Rathor
• EC BRANCH 1ST YEAR
2. WHY WIRELESS COMMUNICATION?
Freedom from wires.
No bunch of wires running from here and there.
“Auto Magical” instantaneous communication without
physical connection setup e.g.- Bluetooth, Wi-Fi.
Global coverage
Communication can reach where wiring is infeasible
or costly
E.g.- rural areas ,buildings,battlefield,outerspace.
Stay connected , flexiblity to connect multiple devices.
3. WHAT IS WIRELESS COMMUNICATION?
• Transmitting/receiving voice and data using
electromagnetic waves in open space.
• 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.
4. TYPICAL FREQUENCIES
• FM RADIO 88 MHZ
• TV BROADCAST 200 MHZ
• GSM PHONES 900 MHZ
• GPS 1.2 GHZ
• PCS PHONES 1.8 GHZ
• BLUETOOTH 2.4 GHZ
• Wi-Fi 2.4 GHZ
5. How communication takes place?
Transmitting Signal
Received Signal
Satellite
Transmitting
Antenna
Receiving
Antenna
6. TYPES OF WIRELESS COMMUNICATION?
RADIO TRANSMISSION:- easily generated, Omni-directional ,
travel long distance , easily penetrates buildings.
• PROBLEMS:- frequency dependent , relatively low
bandwidth for data communication , tightly licensed by
government.
MICROWAVE TRANSMISSION:- widely used for long distance
communication , relatively inexpensive.
• PROBLEMS:- don’t pass through buildings , weather and
frequency dependent.
7. TYPES CONTINUED….
INFRARED AND MILIMETER WAVES:-
Widely used for short range communication , unable to
pass through solid objects , used for indoor wireless
LANs , not for outdoors.
LIGHT WAVE TRANSMISSION:- unguided optical signal
such as laser , unidirectional , easy to install , no license
required.
PROBLEMS:- unable to penetrate rain or thick fog , laser
beam can be easily diverted by air.
8. CURRENT WIRELESS SYSTEMS
• CELLULAR SYSTEM
• WIRELESS LANs
• SATELLITE SYSTEM
• PAGING SYSTEM
• PANs(BLUETOOTH)
9. What is cellular system?
• Definition
Wireless communication technology in
which several small exchanges (called cells)
equipped with low-power radio antennas
(strategically located over a wide
geographical area) are interconnected
through a central exchange. As
a receiver (cell phone) moves from one
place to the next, its identity, location, and
radio frequency is handed-over by one cell
to another without interrupting a call.
10. Cont.…
• Communication between the base station and mobiles is defined by the standard
common air interface (CAI)
– Forward voice channel (FVC): voice transmission
from base station to mobile
– Reverse voice channel (RVC): voice transmission
from mobile to base station
– Forward control channels (FCC): initiating mobile
call from base station to mobile
– Reverse control channel (RCC): initiating mobile
call from mobile to base station
11. Cellular Telephone Systems
• Provide connection to the PSTN for any user location within the radio
range of the system.
• Characteristic
– Large number of users
– Large Geographic area
– Limited frequency spectrum
– Reuse of the radio frequency by the concept of “cell’’.
• Basic cellular system: mobile stations, base stations, and mobile switching
center.
12. Cordless Telephone System
• Cordless telephone systems are full duplex communication systems.
• First generation cordless phone
– in-home use
– communication to dedicated base unit
– few tens of meters
• Second generation cordless phone
– outdoor
– combine with paging system
– few hundred meters per station
13. Evolution of Mobile Radio Communications
• Major Mobile Radio Systems
– 1934 - Police Radio uses conventional AM mobile communication system.
– 1935 - Edwin Armstrong demonstrate FM
– 1946 - First public mobile telephone service - push-to-talk
– 1960 - Improved Mobile Telephone Service, IMTS - full duplex
– 1960 - Bell Lab introduce the concept of Cellular mobile system
– 1968 - AT&T propose the concept of Cellular mobile system to FCC.
– 1976 - Bell Mobile Phone service, poor service due to call blocking
– 1983 - Advanced Mobile Phone System (AMPS), FDMA, FM
– 1991 - Global System for Mobile (GSM), TDMA, GMSK
– 1991 - U.S. Digital Cellular (USDC) IS-54, TDMA, DQPSK
– 1993 - IS-95, CDMA, QPSK, BPSK
14. Example of Mobile Radio Systems
• Examples
– Cordless phone
– Remote controller
– Hand-held walkie-talkies
– Pagers
– Cellular telephone
– Wireless LAN
• Mobile - any radio terminal that could be moves during operation
• Portable - hand-held and used at walking speed
• Subscriber - mobile or portable user
15. a
• Classification of mobile radio transmission system
– Simplex: communication in only one direction
– Half-duplex: same radio channel for both transmission and reception (push-to-
talk)
– Full-duplex: simultaneous radio transmission and reception (FDD, TDD)
• Frequency division duplexing uses two radio channel
– Forward channel: base station to mobile user
– Reverse channel: mobile user to base station
• Time division duplexing shares a single radio channel in time.
Forward Channel
Reverse Channel
16. Wireless local area
network(WLAN)
• WLAN connect local computers
• Range (100 m) confined region
• Break data into packets
• Channel access is shared
• Backbone internet provides best service
• Poor performance in some application like
videos
• Low mobility
17. Satellite system ?
• Global coverage
• Optimized for good transmission
• Expensive base stations.
• Voice and data transmission
• Telecommunication application
• GPS , global telephone connection
• TV broadcasting , military , weather
broadcasting
18. Paging system ?
• Broad coverage for short messages
• Message broadcast from all base stations
• Simple terminals
• Optimized for one way transmission
• Answer back hard
• Overtaken by cellular
19. Paging Systems
• Conventional paging system send brief
messages to a subscriber
• Modern paging system: news headline, stock
quotations, faxes, etc.
• Simultaneously broadcast paging message
from each base station.
• Large transmission power to cover wide area.
20. Modes of wireless communication!
• Bluetooth
• NFC (Near Field Communication)
• Wi-Fi
• Lifi
21. What is Bluetooth?
• Bluetooth is a method for data
communication that used short range radio
links to replace cables between computers
and their connected units.
• Named on – Danish king harald Bluetooth
• Developed in Scandinavia.
22. How does Bluetooth works?
• Bluetooth networking transmits data via low-
power radio waves. It communicates on a
frequency of 2.45 gigahertz.
• Bluetooth doesn't require line of sight
between communicating devices.
• Bluetooth can connect up to eight
devices simultaneously.
• Bluetooth uses a technique called spread-
spectrum frequency hopping
23. Bluetooth is essentially a networking
standard that works at two levels:
• It provides agreement at the physical level --
Bluetooth is a radio-frequency standard.
• It provides agreement at the protocol level,
where products have to agree on when bits
are sent, how many will be sent at a time, and
how the parties in a conversation can be sure
that the message received is the same as the
message sent.
24. Applications of Bluetooth!
• Bluetooth speakers
• Bluetooth headphones
• Cable less connections to the printers
• Bluetooth keyboard
25. What is NFC?
• NFC is a short-range high frequency wireless
communication technology that enables the
exchange of data between devices over about
a 10 cm distance.
• It allows devices to establish peer-to-peer
radio communications, passing data from one
device to another by touching them or putting
them very close together.
26. How NFC works?
• NFC came out of RFID. RFID, or radio-frequency
identification, is the technology used by superstores to
keep track of goods, it uses electromagnetic induction
in order to transmit information. NFC is similar
technology, but standardized for consumer
smartphones.
• NFC is a means of sending data over radio waves. In
that sense it is similar to Wi-Fi or Bluetooth, but unlike
those protocols (and like RFID) NFC can be used to
induce electric currents within passive components as
well as just send data. And it is faster than Bluetooth.
27. Benefits over Bluetooth..
• The significant advantage of NFC over
Bluetooth is the shorter set-up time.
• Due to its shorter range, NFC provides a
higher degree of security than Bluetooth and
makes NFC suitable for crowded areas.
• NFC can also work when one of the devices is
not powered by a battery.
• Unlike Bluetooth, no pairing code is needed.
28. Applications…
• NFC chips or tags are very small in size, it can
be embedded in the movie posters, real estate
agent posters etc.
• Health care department.
• NFC will replace car keys, ID badges and
credit/debit cards.
• Implementation in food packaging, flyers and
merchandisers as well.
29. What is Wi-Fi?
Wi-Fi or wireless fidelity, allows you to access the internet
while on the move; you can remain online while moving
from one area to another in a wireless mode.
Wi-Fi enabled computers send and receive data indoors
and out ;anywhere within the range of a base station.
Its just as fast as cable modem connection.
Wi-Fi is a generic term that refers to the IEEE 80211
communications standard for wireless local area
networks(WLANs)
30.
31.
32.
33. Lifi? (light fidelity)
lifi is transmission of data through illumination
by taking the fiber out of fiber optics by
sending data through LED light bulb.
This varies in intensity faster than human eye
can follow.
It is the fast and cheap wireless
communication system which is optical
version of Wi-Fi.
34. Applications
• In vehicles and traffic lights.
• In aircrafts and underwater.
• Hospitals
• Street lamps
• Petroleum and Chemical industries
35. Advantages of wireless communication
• Wireless
• Speed
• Cost
• Durability
• Flexibility
• Place of device