29-11-2012, 04:51 PM
3G Tutorial
3G_Tutorial.pdf (Size: 1.96 MB / Downloads: 32)
Cellular Mobile Telephony
Frequency modulation
Antenna diversity
Cellular concept
Bell Labs (1957 & 1960)
Frequency reuse
Typically every 7 cells
Handoff as caller moves
Modified CO switch
HLR, paging, handoffs
Sectors improve reuse
Every 3 cells possible
First Generation