July 2010
Intermediate to advanced
350 pages
14h 19m
English
Content preview from Smart Phone and Next Generation Mobile Computing
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176 Smart Phone and Next-Generation Mobile Computing
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Resilient to multi-path fading and distortions — Because the signal
is transmitted over a wide bandwidth with sufficient redundancy,
fading and distortion are significantly reduced.
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Security — UWB is inherently secure. Like other spread spectrum
technologies, the signal appears to be random noise to outsiders.
3.12.1 UWB Standards
The first standard for UWB was IEEE 802.15.3, which was released
in 2002. This standard does not offer many advantages for wireless
services and applications, as the data rate can be easily obtained in
a wireless LAN (See Table 3.8). A new workgroup, IEEE 802.15.3a,
was formed ...