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What is UWB?
Principles of UWB
Advantages of UWB
Applications of UWB
Future Scopes
Challenges
Conclusion
References
Wireless technology for transmitting digital data at very high
rates, using very low power.
UWB is ideally suited for short-range and high-speed data
transmissions for WPAN applications.
Time Domain
Frequency Domain
Sinusoidal signals are narrow in frequency and "wide" over time
A pulse is narrow in time and wideband in frequency
• 3.1-10.6 GHz, coexist with other usersSpectrum reuse
• 480 Mbps up to 1.6 Gbps at distances up to a few meters
High data rate in short range
• Path delay >> pulse widthMultipath immunity
• Baseband modulation (no carrier)Low power
• Unlicensed SpectrumLow cost
• Wireless Personal Area Network
• Military communicationsCommunications
• Ground penetrating radar
• Through-wall radar
• Buried victim rescueRadar
• Telemetry
• Intelligent airbag, driving and parking aids
• Intelligent transport system
Intelligence Sensors
UWB signals provide better security, lower RF health hazards,
and lower interference to other systems
Ground penetrating radar (GPR):-
Detection of unknown objects under the ground.
The UWB GPR is used to draw
a map of gas pipelines buried
under ground by connecting GPS
system to the GPR.
o UWB GPR have been intensively
investigated for mine detection.
Military Communication :-
Attractive for manned and unmanned military vehicles.
o
British engineers from University College London have developed a passive radar system that can see through walls using the WiFi signals generated by wireless routers and access points.
WIRELESS USB
With WUSB, a user can bring a hard disk in proximity to a PC, laptop and, once authentication and authorization are complete, files can be transferred onto the PC.
Interference with other licensed bands
Tradeoffs with noise
Low power operation
Well suited for high speed, short range
WPAN.
Supports multimedia data rates, and offers
inherent data security.
There's a possibility that UWB will become
the "next best" technology for all types of
wireless networks, including wireless LANs.
Rahman,T.A ,Ngah,R,Hall,P.S. Wireless and Optical Communications
Networks, 2009. WOCN '09. 5th IFIP International Conference : 5-7
May 2009
Liuqing Yang; Giannakis, G.B..”Ultra Wideband communications, An
idea whose Time has come.”Signal Processing
Magazine, IEEE.Volume 21, Issue 6, Date: Nov. 2007.
Dr. Jeffrey Reed, Dr. R. Michael Buehrer, Dr. Dong S. Ha,
“Introduction to UWB:Impulse Radio for Radar and Wireless
Communications”.
M.Ghavami,L.B. Michael,R.Kohno, “Ultra wideband signals and
systems in communication engineering”,2nd Edition.
Maria-Gabriella Di Benedetto, Thomas Kaiser, Andreas F. Molisch,
Ian Oppermann, Christian Politano, and Domenico Porcino,”UWB
communication systems”.
