Cellular standards

1G

• 1^st generation cellular phones uses analog modulation
• introduced in North America in 1983
• Eg. AMPS

2G

• 2^nd generation cellular phones switched from analog modulation to digital modulation
• allowed data services like text messaging, etc.,
• Eg. IS54 and IS95

2.5G

3G

• 1^st generation cellular phones switched from analog modulation to digital modulation
• allowed data services like text messaging, etc.,
• Eg. IS54 and IS95

3.5G

4G

WLAN

Most popular wireless standard is IEEE 802.11 series

• 802.11b was first released with 11Mbps datarate
• 802.11a followed it with 54Mbps datarate support at 5Ghz
• 802.11g support datarates 54Mbps at 2.4GHz
• 802.11n
• 802.11ac
• 802.11ad