This document discusses wireless transmission techniques and Bluetooth technology. It describes two common modulation techniques - amplitude modulation and frequency modulation - and how they vary the amplitude or frequency of a carrier signal to transmit information. It then provides details on Bluetooth, including its founding consortium, intended use cases for connecting peripheral devices wirelessly, operating frequency of 2.4 GHz, and range of up to 100 meters. The document aims to explain basic concepts in wireless communication and an important short-range wireless standard, Bluetooth.

1. FIRST YEAR B.TECH
By :-Ganesh Pavane

2. WIRELESS TRANSMISSION
TECHNIQUE

3. Q) WIRELESS TRANSMISSIONTECHNIQUE ???
1.) WIRELESS COMMUNICATION INVOLVES NO PHYSICAL LINK
ESTABLISHED BETWEEN TWO OR MORE DEVICES
2.) WIRELESS SIGNALS ARE SPREAD OVER IN THE AIR AND ARE
RECEIVED AND INTERPRETED BY APPROPRIATE ANTENNAS.

4. BASIC COMMUNICATION BLOCK DIAGRAM

5. ->MODULATION TECHNIQUE
1.) AMPLITUDE MODULATION (AM)
2.)FREQUENCY MODULATION(FM)

6. 1.)AMPLITUDE MODULATION
A) AMPLITUDE OF THE CARRIER VARIED WITH THE
MODULATING SIGNAL
B) INFORMATION IS CONTAINED IN AMPLITUDE VARIATION OF
CARRIER

7. 2) FREQUENCY MODULATION(FM)
A.) FREQUENCY OF THE CARRIER IS VARRIED IN
ACCORADANCE WITH THE AMPLITUDE THE AMPLITUDE
OF THE MODULATING SIGNAL
B.) INFORMATION ISCONTAINED FREQUENCY VARAITION OF
CARRIER

8. BLUETOOTH
Consortium: Ericsson, Intel, IBM, Nokia, Toshiba…
Scenarios:
connection of peripheral devices
loudspeaker, joystick, headset
support of ad-hoc networking
small devices, low-cost
bridging of networks
e.g., GSM via mobile phone - Bluetooth - laptop
Simple, cheap, replacement of IrDA, low range, lower data rates, low-power
Worldwide operation: 2.4 GHz
Resistance to jamming and selective frequency fading:
FHSS over 79 channels (of 1MHz each), 1600hops/s
Coexistence of multiple piconets: like CDMA
Links: synchronous connections and asynchronous connectionless
Interoperability: protocol stack supporting TCP/IP, OBEX, SDP
Range: 10 meters, can be extended to 100 meters

9. BLUETOOTH APPLICATION AREAS
[Window Title]
Synaptics TouchPad 64-bit Enhancements
[Main Instruction]
Synaptics TouchPad 64-bit Enhancements has stopped working
[Content]
Windows is checking for a solution to the problem...
[Cancel]

10. ANY QUESTION

11. THANK YOU