logging in or signing up Wireless Communication jesudass Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2539 Category: Science & Tech.. License: All Rights Reserved Like it (6) Dislike it (0) Added: December 23, 2009 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: bilawalsingh (15 month(s) ago) pls mail this presentation to my id singh.bilawal@yahoo.in it is really very useful Saving..... Post Reply Close Saving..... Edit Comment Close By: roxx162 (15 month(s) ago) This ppt is really superb and useful.Please allow me to download this or mail it to tanujkathuria@yahoo.com please. Saving..... Post Reply Close Saving..... Edit Comment Close By: ras90it (21 month(s) ago) hello sir let me allow to download thi ppt or sent to my mail ras90it@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: jaga101 (22 month(s) ago) hello sir let me allow to download thi ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: sunilrinku (28 month(s) ago) how should i download this..! I like this Presentation Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript COIMBATORE INSTITUTE OF TECHNOLOGY,COIMBATORE-14 : COIMBATORE INSTITUTE OF TECHNOLOGY,COIMBATORE-14 PROJECT REPORT WIRELESS COMMUNICATION Submitted By : Mamalaivasan. C Roll No : 09ME26 Section : “B” Submitted To : Santhi. P INTRODUCTION : INTRODUCTION Wireless operations permits services, such as long range communications, that are impossible or impractical to implement with the use of wires . Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires “. It encompasses various types of fixed, mobile, and portable two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking History : History Photophone Radio Photophone The world's first wireless telephone conversation occurred in 1880, when Alexander Graham Bell and Charles Sumner Tainter invented and patented the photophone, a telephone that conducted audio conversations wirelessly over modulated light beams (which are narrow projections of electromagnetic waves). In that distant era when utilities did not yet exist to provide electricity, and lasers had not even been conceived of in science fiction, there were no practical applications for their invention, which was highly limited by the availability of both sunlight and good weather. Slide 4: Similar to free space optical communication, the photophone also required a clear line of sight between its transmitter and its receiver. Radio It would be several decades before the photophone's principals found their first practical applications in military communications and later in fiber-optic communications. The term "wireless" came into public use to refer to a radio receiver or transceiver (a dual purpose receiver and transmitter device), establishing its usage in the field of wireless telegraphy early on; now the term is used to describe modern wireless connections such as in cellular networks and wireless broadband Internet. Slide 5: It is also used in a general sense to refer to any type of operation that is implemented without the use of wires, such as "wireless remote control" or "wireless energy transfer", regardless of the specific technology (e.g. radio, infrared, ultrasonic) that is used to accomplish the operation. Guglielmo Marconi and Karl Ferdinand Braun were awarded the 1909 Nobel Prize for Physics for their contribution to wireless telegraphy. The electromagnetic spectrum : The electromagnetic spectrum Light, colors, AM and FM radio, and electronic devices make use of the electromagnetic spectrum. In the US the frequencies that are available for use for communication are treated as a public resource and are regulated by the Federal Communications Commission. This determines which frequency ranges can be used for what purpose and by whom. In the absence of such control or alternative arrangements such as a privatized electromagnetic spectrum, chaos might result if, for example, airlines didn't have specific frequencies to work under and an amateur radio operator was interfering with the pilot's ability to land an airplane. Wireless communication spans the spectrum from 9 kHz to 300 GHz. (Also see Spectrum management) WiFi : WiFi Wi-Fi (for wireless fidelity) is a wireless LAN technology that enables laptop PC’s, PDA’s, and other devices to connect easily to the internet. Technically known as IEEE 802.11 a,b,g,n, Wi-Fi is less expensive and nearing the speeds of standard Ethernet and other common wire-based LAN technologies. Several Wi-Fi hot spots have been popular over the past few years. Some businesses charge customers a monthly fee for service, while others have begun offering it for free in an effort to increase the sales of their goods. Computer Interface Devices : Computer Interface Devices Answering the call of customers frustrated with cord clutter, many manufactures of computer peripherals turned to wireless technology to satisfy their consumer base. Originally these units used bulky, highly limited transceivers to mediate between a computer and a keyboard and mouse, however more recent generations have used small, high quality devices, some even incorporating Bluetooth. These systems have become so ubiquitous that some users have begun complaining about a lack of wired peripherals. Wireless devices tend to have a slightly slower response time than their wired counterparts, however the gap is decreasing. Slide 9: Initial concerns about the security of wireless keyboards have also been addressed with the maturation of the technology Application of Wireless Communication Security systems:Wireless technology may supplement or replace hard wired implementations in security systems for homes or office buildings. Television remote control:Modern televisions use wireless (generally infrared) remote control units. Now radio waves are also used. Slide 10: Cellular telephony (phones and modems):Perhaps the best known example of wireless technology is the cellular telephone and modems. These instruments use radio waves to enable the operator to make phone calls from many locations worldwide. They can be used anywhere that there is a cellular telephone site to house the equipment that is required to transmit and receive the signal that is used to transfer both voice and data to and from these instruments. Thank You\\***// : Thank You\\***// You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Wireless Communication jesudass Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2539 Category: Science & Tech.. License: All Rights Reserved Like it (6) Dislike it (0) Added: December 23, 2009 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: bilawalsingh (15 month(s) ago) pls mail this presentation to my id singh.bilawal@yahoo.in it is really very useful Saving..... Post Reply Close Saving..... Edit Comment Close By: roxx162 (15 month(s) ago) This ppt is really superb and useful.Please allow me to download this or mail it to tanujkathuria@yahoo.com please. Saving..... Post Reply Close Saving..... Edit Comment Close By: ras90it (21 month(s) ago) hello sir let me allow to download thi ppt or sent to my mail ras90it@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: jaga101 (22 month(s) ago) hello sir let me allow to download thi ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: sunilrinku (28 month(s) ago) how should i download this..! I like this Presentation Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript COIMBATORE INSTITUTE OF TECHNOLOGY,COIMBATORE-14 : COIMBATORE INSTITUTE OF TECHNOLOGY,COIMBATORE-14 PROJECT REPORT WIRELESS COMMUNICATION Submitted By : Mamalaivasan. C Roll No : 09ME26 Section : “B” Submitted To : Santhi. P INTRODUCTION : INTRODUCTION Wireless operations permits services, such as long range communications, that are impossible or impractical to implement with the use of wires . Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires “. It encompasses various types of fixed, mobile, and portable two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking History : History Photophone Radio Photophone The world's first wireless telephone conversation occurred in 1880, when Alexander Graham Bell and Charles Sumner Tainter invented and patented the photophone, a telephone that conducted audio conversations wirelessly over modulated light beams (which are narrow projections of electromagnetic waves). In that distant era when utilities did not yet exist to provide electricity, and lasers had not even been conceived of in science fiction, there were no practical applications for their invention, which was highly limited by the availability of both sunlight and good weather. Slide 4: Similar to free space optical communication, the photophone also required a clear line of sight between its transmitter and its receiver. Radio It would be several decades before the photophone's principals found their first practical applications in military communications and later in fiber-optic communications. The term "wireless" came into public use to refer to a radio receiver or transceiver (a dual purpose receiver and transmitter device), establishing its usage in the field of wireless telegraphy early on; now the term is used to describe modern wireless connections such as in cellular networks and wireless broadband Internet. Slide 5: It is also used in a general sense to refer to any type of operation that is implemented without the use of wires, such as "wireless remote control" or "wireless energy transfer", regardless of the specific technology (e.g. radio, infrared, ultrasonic) that is used to accomplish the operation. Guglielmo Marconi and Karl Ferdinand Braun were awarded the 1909 Nobel Prize for Physics for their contribution to wireless telegraphy. The electromagnetic spectrum : The electromagnetic spectrum Light, colors, AM and FM radio, and electronic devices make use of the electromagnetic spectrum. In the US the frequencies that are available for use for communication are treated as a public resource and are regulated by the Federal Communications Commission. This determines which frequency ranges can be used for what purpose and by whom. In the absence of such control or alternative arrangements such as a privatized electromagnetic spectrum, chaos might result if, for example, airlines didn't have specific frequencies to work under and an amateur radio operator was interfering with the pilot's ability to land an airplane. Wireless communication spans the spectrum from 9 kHz to 300 GHz. (Also see Spectrum management) WiFi : WiFi Wi-Fi (for wireless fidelity) is a wireless LAN technology that enables laptop PC’s, PDA’s, and other devices to connect easily to the internet. Technically known as IEEE 802.11 a,b,g,n, Wi-Fi is less expensive and nearing the speeds of standard Ethernet and other common wire-based LAN technologies. Several Wi-Fi hot spots have been popular over the past few years. Some businesses charge customers a monthly fee for service, while others have begun offering it for free in an effort to increase the sales of their goods. Computer Interface Devices : Computer Interface Devices Answering the call of customers frustrated with cord clutter, many manufactures of computer peripherals turned to wireless technology to satisfy their consumer base. Originally these units used bulky, highly limited transceivers to mediate between a computer and a keyboard and mouse, however more recent generations have used small, high quality devices, some even incorporating Bluetooth. These systems have become so ubiquitous that some users have begun complaining about a lack of wired peripherals. Wireless devices tend to have a slightly slower response time than their wired counterparts, however the gap is decreasing. Slide 9: Initial concerns about the security of wireless keyboards have also been addressed with the maturation of the technology Application of Wireless Communication Security systems:Wireless technology may supplement or replace hard wired implementations in security systems for homes or office buildings. Television remote control:Modern televisions use wireless (generally infrared) remote control units. Now radio waves are also used. Slide 10: Cellular telephony (phones and modems):Perhaps the best known example of wireless technology is the cellular telephone and modems. These instruments use radio waves to enable the operator to make phone calls from many locations worldwide. They can be used anywhere that there is a cellular telephone site to house the equipment that is required to transmit and receive the signal that is used to transfer both voice and data to and from these instruments. Thank You\\***// : Thank You\\***//