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The term wireless communication was introduced in the 19th century and wireless communication technology has developed over the subsequent years. It is one of the most important mediums of transmission of information from one device to other devices. In this technology, the information can be transmitted through the air without requiring any cable or wires or other electronic conductors, by using electromagnetic waves like IR, RF, satellite, etc. In the present days, the wireless communication technology refers to a variety of wireless communication devices and technologies ranging from smart phones to computers, tabs, laptops, Bluetooth Technology, printers. This article gives an overview of wireless communication and types of wireless communications.
Wireless communication is among technology s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television s remote control) and thousands of kilometres (for example, radio communication).
Some of the devices used for wireless communication are cordless telephones, mobiles, GPS units, wireless computer parts, and satellite television.
Advantages
Wireless communication has the following advantages:
i. Communication has enhanced to convey the information quickly to the consumers.
ii. Working professionals can work and access Internet anywhere and anytime without carrying cables or wires wherever they go. This also helps to complete the work anywhere on time and improves the productivity.
ii. Doctors, workers and other professionals working in remote areas can be in touch with medical centres through wireless communication.
iv. Urgent situation can be alerted through wireless communication. The affected regions can be provided help and support with the help of these alerts through wireless communication.
v. Wireless networks are cheaper to install and maintain.
Disadvantages
The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.
Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air. It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.
Types of wireless communication
The different types of wireless communication technologies include:
i. Infrared (IR) wireless communication:
IR wireless communication communicates data or information in devices or systems through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength that is longer than that of red light.
Working:
IR wireless is used for short and medium-range communications and security control. For IR communication to work, the systems mostly operate in line-of-sight mode which means that there must be no obstruction between the transmitter (source) and receiver (destination).
Infrared is used in television remote controls and security systems.
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Wireless communication is among technology s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television s remote control) and thousands of kilometres (for example, radio communication).
Some of the devices used for wireless communication are cordless telephones, mobiles, GPS units, wireless computer parts, and satellite television.
Advantages
Wireless communication has the following advantages:
i. Communication has enhanced to convey the information quickly to the consumers.
ii. Working professionals can work and access Internet anywhere and anytime without carrying cables or wires wherever they go. This also helps to complete the work anywhere on time and improves the productivity.
ii. Doctors, workers and other professionals working in remote areas can be in touch with medical centres through wireless communication.
iv. Urgent situation can be alerted through wireless communication. The affected regions can be provided help and support with the help of these alerts through wireless communication.
v. Wireless networks are cheaper to install and maintain.
Disadvantages
The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.
Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air. It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.
Types of wireless communication
The different types of wireless communication technologies include:
i. Infrared (IR) wireless communication:
IR wireless communication communicates data or information in devices or systems through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength that is longer than that of red light.
Working:
IR wireless is used for short and medium-range communications and security control. For IR communication to work, the systems mostly operate in line-of-sight mode which means that there must be no obstruction between the transmitter (source) and receiver (destination).
Infrared is used in television remote controls and security systems.
In the electromagnetic spectrum, infrared radiation lies between microwaves and visible light, therefore, they can be used as a source of communication.
A photo LED transmitter and a photodiode receptor are required for successful IR communication. The LED transmitter transmits the infrared signal in the form of non-visible light, which is captured and retrieved as information by the photo receptor. In this way, the information between the source and the target is transferred.
The source and/or destination can be laptops, mobile phones, televisions, security systems and any other device that supports wireless communication.
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Wireless communication is among technology s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television s remote control) and thousands of kilometres (for example, radio communication).
Some of the devices used for wireless communication are cordless telephones, mobiles, GPS units, wireless computer parts, and satellite television.
Advantages
Wireless communication has the following advantages:
i. Communication has enhanced to convey the information quickly to the consumers.
ii. Working professionals can work and access Internet anywhere and anytime without carrying cables or wires wherever they go. This also helps to complete the work anywhere on time and improves the productivity.
ii. Doctors, workers and other professionals working in remote areas can be in touch with medical centres through wireless communication.
iv. Urgent situation can be alerted through wireless communication. The affected regions can be provided help and support with the help of these alerts through wireless communication.
v. Wireless networks are cheaper to install and maintain.
Disadvantages
The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.
Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air. It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.
Types of wireless communication
The different types of wireless communication technologies include:
i. Infrared (IR) wireless communication:
IR wireless communication communicates data or information in devices or systems through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength that is longer than that of red light.
Working:
IR wireless is used for short and medium-range communications and security control. For IR communication to work, the systems mostly operate in line-of-sight mode which means that there must be no obstruction between the transmitter (source) and receiver (destination).
Infrared is used in television remote controls and security systems.
In the electromagnetic spectrum, infrared radiation lies between microwaves and visible light, therefore, they can be used as a source of communication.
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Abstract
Wireless communication is among technology s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television s remote control) and thousands of kilometres (for example, radio communication).
Some of the devices used for wireless communication are cordless telephones, mobiles, GPS units, wireless computer parts, and satellite television.
Advantages
Wireless communication has the following advantages:
i. Communication has enhanced to convey the information quickly to the consumers.
ii. Working professionals can work and access Internet anywhere and anytime without carrying cables or wires wherever they go. This also helps to complete the work anywhere on time and improves the productivity.
ii. Doctors, workers and other professionals working in remote areas can be in touch with medical centres through wireless communication.
iv. Urgent situation can be alerted through wireless communication. The affected regions can be provided help and support with the help of these alerts through wireless communication.
v. Wireless networks are cheaper to install and maintain.
Disadvantages
The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.
Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air. It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.
Types of wireless communication
The different types of wireless communication technologies include:
i. Infrared (IR) wireless communication:
IR wireless communication communicates data or information in devices or systems through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength that is longer than that of red light.
Working:
IR wireless is used for short and medium-range communications and security control. For IR communication to work, the systems mostly operate in line-of-sight mode which means that there must be no obstruction between the transmitter (source) and receiver (destination).
Infrared is used in television remote controls and security systems.
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Wireless communication is among technology s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters (for example, a television s remote control) and thousands of kilometres (for example, radio communication).
Some of the devices used for wireless communication are cordless telephones, mobiles, GPS units, wireless computer parts, and satellite television.
Advantages
Wireless communication has the following advantages:
i. Communication has enhanced to convey the information quickly to the consumers.
ii. Working professionals can work and access Internet anywhere and anytime without carrying cables or wires wherever they go. This also helps to complete the work anywhere on time and improves the productivity.
ii. Doctors, workers and other professionals working in remote areas can be in touch with medical centres through wireless communication.
iv. Urgent situation can be alerted through wireless communication. The affected regions can be provided help and support with the help of these alerts through wireless communication.
v. Wireless networks are cheaper to install and maintain.
Disadvantages
The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.
Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air. It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.
Types of wireless communication
The different types of wireless communication technologies include:
i. Infrared (IR) wireless communication:
IR wireless communication communicates data or information in devices or systems through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength that is longer than that of red light.
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The following topics are covered in these notes & ebook:
UNIT I PRINCIPLES OF WIRELESS COMMUNICATION - Digital modulation techniques Linear modulation techniques Spread spectrum modulation Performance of modulation Multiple access techniques TDMA FDMA CDMA SDMA Overview of cellular networks Cellular concept Handoff strategies Path loss Fading and Doppler effect.
UNIT II WIRELESS PROTOCOLS - Issues and challenges of wireless networks Location management Resource management Routing Power management Security Wireless media access techniques ALOHA CSMA Wireless LAN MAN IEE 802.11 (a b e f g h i) Bluetooth. Wireless routing protocols Mobile IP IPv4 IPv6 Wireless TCP.Protocols for 3G & 4G cellular networks IMT 2000 UMTS CDMA2000 Mobility management and handover technologies All-IP based cellular network
UNIT II TYPES OF WIRELESS NETWORKS - Mobile networks Ad-hoc networks Ad-hoc routing Sensor networks Peer-Peer networks Mobile routing protocols DSR AODV Reactive routing Location aided routing Mobility models Entity based Group mobility Random way Point mobility model.
UNIT IV ISSUES AND CHALLENGES - Issues and challenges of mobile networks Security issues Authentication in mobile applications Privacy issues Power management Energy awareness computing.Mobile IP and Ad-hoc networks VoIP applications.
UNIT V SIMULATION - Study of various network simulators (GloMoSim NS2 Opnet) Designing and evaluating the performance of various transport and routing protocols of mobile and wireless networks using network simulator (any one).
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wireless communication notes by arun kumar pdf
Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor.
The most common wireless technologies use radio. With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio wireless technology include GPS units, garage door openers, wireless computer mice, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones.
Somewhat less common methods of achieving wireless communications include the use of other electromagnetic wireless technologies, such as light, magnetic, or electric fields or the use of sound.
The term wireless has been used twice in communications history, with slightly different meaning. It was initially used from about 1890 for the first radio transmitting and receiving technology, as in wireless telegraphy, until the new word radio replaced it around 1920. The term was revived in the 1980s and 1990s mainly to distinguish digital devices that communicate without wires, such as the examples listed in the previous paragraph, from those that require wires. This is its primary usage today.
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To get full information or details of wireless communication notes by arun kumar pdf please have a look on the pages
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sir i hv need wireless communication system notes and telecommunication n switching if u cn help me n guide me from where i hv to study den plz help me n provide me d notes plz [/b][/size][/font]
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