logging in or signing up Optical Wireless Networking rrich76 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: Embed: Flash iPad Copy Does not support media & animations WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1393 Category: Education License: All Rights Reserved Like it (4) Dislike it (0) Added: July 02, 2010 This Presentation is Public Favorites: 4 Presentation Description No description available. Comments Posting comment... By: pradheep1991 (20 month(s) ago) Very interesting presentation ! Saving..... Post Reply Close Saving..... Edit Comment Close By: herrerarowelle (31 month(s) ago) i have learn a lot in this presentation Saving..... Post Reply Close Saving..... Edit Comment Close By: raghujiknp (31 month(s) ago) gooddddddddd Saving..... Post Reply Close Saving..... Edit Comment Close By: valter.foresto (32 month(s) ago) Very interesting presentation ! Saving..... Post Reply Close Saving..... Edit Comment Close By: sushant.khot31 (35 month(s) ago) download file Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript OPTICAL WIRELESS NETWORKING : Illuminating the future of LANs Daniel Rich ITEC 2320 OPTICAL WIRELESS NETWORKING BANDWIDTH : BANDWIDTH Every day the demand for more capacity grows AVAILABILITY : AVAILABILITY High speed throughput is limited by the “last mile” THE DIFFERENCE : THE DIFFERENCE FIBER OPTIC BACKBONE LOCAL LOOP Fiber has demonstrated speeds up to 100 Gbps Average download speed for the nation: 5.1 mbps WI-FI : WI-FI TODAY’S ANSWER Wi-Fi is the only real option for wireless connectivity in homes & small businesses. The data transfer rates are less than needed, especially when multiple devices use the same connection. Full multiplexing is not possible for Wi-Fi. WIRES : WIRES To avoid Wi-Fi bottlenecks, this is the alternative: …and it’s not pretty A NEW SOLUTION : A NEW SOLUTION Replace radio waves with beams of light BREAKTHROUGH : BREAKTHROUGH Researchers discovered a way to encode infrared light with data in a way that dramatically improves transmission speed The method delivers speeds more than 1 Gbps RADIO VS. INFRARED : RADIO VS. INFRARED Unlike radio waves used by Wi-Fi, light photons can deliver broader bandwidth that can be used simultaneously by multiple devices. Also, photons do not interfere with each other or pass through walls like radio transmissions HOW IT WORKS : HOW IT WORKS The encoded infrared light is sent through a special holographic grid resulting in multiple beams all carrying the same data THE LIGHT GRID : THE LIGHT GRID The pencil-thin beams of infrared light fill the volume of a room, and devices fitted with infrared receivers pick up data from the beams anywhere within the array Beams reflect off of walls, desktops, even faces THE NEXT STEP : THE NEXT STEP WHITE LED Capable of even higher bandwidth, white LED lamps could replace infrared in future optical wireless systems. White LEDs could light up rooms efficiently while simultaneously providing broadband wireless access. WHITE LED LIGHT : WHITE LED LIGHT Experts believe the cost of white LEDs will drop and they will become the standard light source for homes because of their energy efficiency. Wireless systems based on them would be easy to integrate into existing fixtures MORE ADVANCEMENTS : = + MORE ADVANCEMENTS Combined with other proposed broadband solutions, optical wireless may soon bring amazing speeds REFERENCES : REFERENCES Network+ Guide to Networks www.speedmatters.org/content/2009report http://blogs.techrepublic.com.com/networking/?p=2949 Scientific American: July 2007 issue http://live.psu.edu/story/44147 http://www.nytimes.com/2008/07/28/technology/28led.html?_r=1 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.