ULTRA-WIDE BAND: W hat is it? How can it be used?
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Transcript of ULTRA-WIDE BAND: W hat is it? How can it be used?
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ULTRA-WIDE BAND:What is it?
How can it be used?
Presented by:
Troy Hayes
Kevin Koelbel
Robert Stewart
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UWB: What is it?
• New radio technology providing high speed data transfer
• Classification of signals that spread over a large bandwidth, specifically those >500 MHz
(A typical telephone modem operates at 12 kHz)
• Short pulses of energy lasting nanoseconds, but bandwidth goes to very large levels
• Transmits over a wider range of the radio spectrum than conventional wireless systems
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What is it? (cont’d)
• Short range radio technology – transmits up to 30 feet
• Composed of pulses of only a few cycles in length
• Supports direct transmission of digital communication as a baseband signal
• Information is not transmitted on a single pulse and the frequency of the signal is unable to be determined
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UWB: History
• Originated in 1962
• Based on work in “time-domain” electromagnets
• Invented by Dr. Gerald F. Ross
• First patent awarded to Dr. Ross in 1973
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History (cont’d)
• 1980’s – UWB was often referred to as “baseband,” “carrier-free,” or “impulse”
• 1989 - The term “UWB” was first used by the U.S. Department of Defense
• Prior to 1994 - most work in UWB was classified by the U.S. government
• Since 1994 - UWB programs were declassified
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UWB: Advantages
• Average transmitted power is low because of the duty cycle, which results in low power consumption
• Higher data rates than conventional wireless technology
• Less chance of interference than narrowband radio designs
• UWB radars allow low probability of interception and detection, high data throughput, precise ranging and localization
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UWB: Disadvantages
• Current FCC regulations limit UWB use to a range of 30 meters
• Typically used indoors due to the limited range
• Equipment not readily available to the general public yet
• Although cheaper to operate, equipment is currently more expensive than conventional wireless equipment
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UWB: Uses• Personal Area Networks (PAN)
• Local Area Networks (LAN)
• “UWB Heart and Respiration Monitor,” and wireless patient location and tracking system (Wireless 2000Technologies)
• Radar systems
• Home entertainment centers
• Remote tracking devices
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Uses (cont’d)
• Transfer digital photos to a printer without a PC
• Send movies / mp3’s from a laptop to a PDA
• Play media on monitors / projectors across the room
• Sync mobile phones and PCs
• Sync laptop computers and PCs
• Quickly back up PCs
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Educational Applications
• Send large files to entire class
• Quickly collect assignments
• Create presentations with imbedded media
• Show videos with less set-up time
• Back-up and restore student files / equipment
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References
• “A Brief History of UWB Communications”http://www.multispectral.com
• “Riding the ultra wideband communications wave” http://www.physorg.com/news9017.html
• UWB Forumhttp://www.uwbforum.org
• UWB Overview, Tutorials/Resources http://www.telecomspace.com/wirelessnw-uwb.html
• Wikipedia article on Ultra-wide bandhttp://en.wikipedia.org/wiki/Ultra-wideband
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