Frequency in GSM system

pintu.sadhu  Platinum  (1)
6 years 7 months ago  View: 647  Reply: 5
System
GSM 900
GSM 1800
GSM 1900
Uplink
890-915 MHz
1710-1785 MHz
1850-1910 MHz
Downlink
935-960 MHz
1805-1880 MHz
1930-1990 MHz
Wavelength
33 cm
~ 17 cm
~ 16 cm
Bandwidth
25 MHz
75 MHz
60 MHz
Duplex Distance
45 MHz
95 MHz
80 MHz
Radio Channels
125
375
300


In GSM system, Carrier Separation is 200 kHz and Transmission Rate is 270 kbits/s.

To avoid interface between uplink and downlink frequency, distance is maintained between uplink and downlink frequencies. The difference is called Duplex Distance. 

mmkabir  Silver 
6 years 7 months ago
Basic things but well organized 
nsiddique  Silver 
6 years 7 months ago
good for learners. 
Armetta  Diamond 
6 years 7 months ago
This document is very well done

m_atiqur  Senior 
6 years 7 months ago
nice. 
Mosabbir  Platinum 
6 years 7 months ago

Good starter, keep it up.