Mobile Computing And Wireless Communication (2170710)

BE | Semester-7   Winter-2018 | 26/11/2018

Q3) (a)

Compare GSM and CDMA technology.

GSM Technology | CDMA Technology

Sr. Feature GSM Technology CDMA Technology
1 Frequency 900MHz; 1800MHz;1900MHz 800MHz;1900MHz
2 Channel Bandwidth Total 25 MHz bandwidth with 200 KHz per channels, 8 timeslots per channel with frequency hopping Total 12MHz with 1.25 MHz for the spread spectrum
3 Voice Codec 13 Kbits/second 8 Kbits/second or 13 Kbps
4 Data bit rate 9.6 Kbits/second or expandable 9.6Kbits
5 SMS 160 characters of text supports 120 characters
6 SIM Card Yes No
7 Multipath Causes interference and destruction to service Used as an advantage
8 Radio Interface TDMA CDMA
9 Handoff Hard Soft
10 System Capacity Fixed and limited Flexible and higher than GSM