This document summarizes a seminar presentation on Ultra Wide Band (UWB) technology. UWB uses extremely short pulses and a wide spectrum to achieve high bandwidth wireless connections with low power. It was defined by the FCC as any technology that has a fractional bandwidth greater than 20% of the center frequency or a bandwidth greater than 500 MHz. UWB offers advantages like high data transfer rates over short ranges, low power consumption, and ability to reuse spectrum by coexisting with other wireless technologies. Potential applications include wireless video, accurate ranging, imaging, and replacing cables like USB with wireless connectivity. The future scope of UWB includes uses in wireless personal area networks and possibly becoming the next mainstream wireless network technology.

1. A Seminar On
Ultra Wide Band
(UWB)
Presented By:
Ghanshyam Yadav
CSE 3rd Year
Roll no: 1204210022
MMMUT GKP

2. Contents
 What is UWB?
 Principles of UWB
 How it work?
 Why UWB?
 Application
 Future Scope

3. Definition – What is UWB?
 Ultra Wide Band is communication technology used
in wireless networking to achieve high Bandwidth
connection with low power spectral density.
 UWB is a form of extremely wide spread spectrum
where RF energy is spread over gigahertz of
spectrum
• Wider than any narrowband system by orders of
magnitude
• Power seen by a narrowband system is a fraction
of the total UWB power

4. FCC Definition
Fractional Bandwidth > 20% of fc
𝐵𝑓 = 2
𝑓𝐻 − 𝑓𝐿
𝑓𝐻 + 𝑓𝐿
> 0.2
fH : higher 10dB down point
fL : lower 10db down point
fc : central frequency
Bandwidth > 500 MHz
Example:
fL=1GHz and fH=3GHz → FB = 1
GHz

5. Principles of UWB
Time Domain
 Extremely short pulses
 Very low duty cycle
Frequency Domain
 Ultra wide spectrum
 Low power spectral
density

6. How UWB works
• Generation of extremely short digital pulses in the
subnanosecond range.
• Uses and extremely wide band of RF spectrum to
transmit data

7. Effectiveness of Ultra Wide
Band• Shannon showed that the system capacity, C, of a channel perturbed
by AWGN ---
Where:
C = Max Channel Capacity (bits/sec)
B = Channel Bandwidth (Hz)
S = Signal Power (watts)
N = Noise Power (watts)
Capacity per channel (bps)  B
Capacity per channel (bps)  log(1+S/N)
1. Increase B
2. Increase S/N, use higher order modulation

8. Throughput
Low Power UWB Comparable to High Power Wireless Systems

9. Why UWB - Advantages
 Spectrum reuse
 Use frequencies from 3.1
to 10.6 GHz
 coexist with other users
(sharing spectrum)
 High data rate in short range,
high throughput
 500 Mbps at 10 feet
 Low power
 Baseband modulation (no
carrier)
 Long battery life of portable
devices

10. Comparison with other technologies
• Faster than Bluetooth, Wi Fi
• Data rate of 450Mbps instead of 1Mbps
• Complementary to existing radio technologies like 802.11

11. UWB Applications
• Replacing IEEE 1394 cables with wireless
connectivity
• No. 1 High quality wireless video
• Accurate Ranging information
• Radar and Imaging

12. Future Scope
WIRELESS USB
• The next step for USB technology is wireless USB.
• WUSB will be high speed wireless interconnect technology to take advantage
of 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.

13. • 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.
CONCLUSION

14. THANK YOU
Queries ??