06-04-2012, 03:09 PM
ultra wide band technology
SEMINAR ON UWB TECHNOLOGY.pptx (Size: 1.15 MB / Downloads: 51)
DEFINITION OF UWB :
UWB or Ultra-wideband is a radio technology that uses very low energy levels for short-range high-bandwidth communications by using a large portion of the radio spectrum.
FCC and ITU-R define UWB as a modulated transmission with :
- more than 20% fractional bandwidth
or,
- at least 500 MHz of bandwidth.
History of UWB :
Gerry’s pioneering insight into the value and applications of this technology over 30 years ago has been instrumental in shaping UWB technology to the point it has reached today – with applications ready to meet market demands for high-speed wireless and precision radar/positioning applications.
On Feb 14 ,2002 UWB approved byFCC for commercialization
Why uwb is attractive
CAPICITY:
UWB can go upto 2GHz in bandwidth
Spread Spectrum uses several frequencies one at a time but UWB uses every frequency of its spectrum at the same time.
SIMPLICITY :
Its front end complexity is far less than the traditional sinusoidal radio.
LOW POWER
LOW COST
Characteristics of UWB
UWB has a number of features which make it attractive for consumer communications applications. In particular, UWB systems
have potentially low complexity and low cost;
have a noise-like signal spectrum;
are resistant to severe multipath and jamming;
have very good time-domain resolution allowing for location and tracking applications.
UWB & MIMO
Combination of UWB and MIMO offers the following advantages:
Greater coverage
Highest data rate
Interference rejection
SEMINAR ON UWB TECHNOLOGY.pptx (Size: 1.15 MB / Downloads: 51)
DEFINITION OF UWB :
UWB or Ultra-wideband is a radio technology that uses very low energy levels for short-range high-bandwidth communications by using a large portion of the radio spectrum.
FCC and ITU-R define UWB as a modulated transmission with :
- more than 20% fractional bandwidth
or,
- at least 500 MHz of bandwidth.
History of UWB :
Gerry’s pioneering insight into the value and applications of this technology over 30 years ago has been instrumental in shaping UWB technology to the point it has reached today – with applications ready to meet market demands for high-speed wireless and precision radar/positioning applications.
On Feb 14 ,2002 UWB approved byFCC for commercialization
Why uwb is attractive
CAPICITY:
UWB can go upto 2GHz in bandwidth
Spread Spectrum uses several frequencies one at a time but UWB uses every frequency of its spectrum at the same time.
SIMPLICITY :
Its front end complexity is far less than the traditional sinusoidal radio.
LOW POWER
LOW COST
Characteristics of UWB
UWB has a number of features which make it attractive for consumer communications applications. In particular, UWB systems
have potentially low complexity and low cost;
have a noise-like signal spectrum;
are resistant to severe multipath and jamming;
have very good time-domain resolution allowing for location and tracking applications.
UWB & MIMO
Combination of UWB and MIMO offers the following advantages:
Greater coverage
Highest data rate
Interference rejection