Wireless communications
• The word wireless is dictionary defined
“having no wires ” .
Zero Generation
1G TECHNOLOGY
Introduced in 1980
Analog voice
Advance Mobile Phone
Service (AMPS)
Nordic Mobile Telephone
(NMT)
Total Access
Communication System
2G TECHNOLOGY
Finland (1991)
Global system for mobile (GSM)
Digital signals
Speed upto 64kbps
 Services like text messages ,
picture message
2.5G TECHNOLOGY
2.5G is sometimes called GPRS
Features includes like E-mail, web browsing etc.
Speed: 64-144 kbps
2.75G (EDGE)
 Speed: 135kbps
3G Technology
 Third generation introduced in year 2000s.
 Designed for multimedia communication
 Provides higher data transfer rates.(HSPA)
 Speed downloading and uploading speeds are
up to 21 Mbps and 5.7 Mbps respectively.
4G LTE
TECHNOLOGY
Introduced in 2010
Speed: 100Mbps -
1Gbps
Also known as MAGIC
 Any kind of service
anywhere
 Long term evolution
Advantages of LTE
Comparison of LTE Speed
5G TECHNOLOGY
 Probably in 2020
 Complete wireless communication
 High Speed, High Capacity
Types of multiple access protocol
FDMA
CDMA
Channelization Protocols
Conclusion
• All totally the best way to help all users is to use 5G
as the next wireless system and in totally it is safety
and secure for public, this the need that demands the
solution.
• It will be available in the market 2020 at affordable
cost with more reliability than previous mobiles.
THANK YOU

Wireless communications