7 April 2018

Advantages and disadvantages of GSM

GSM is a cellular technology used for transmitting mobile voice and data services developed by European Telecommunications standards Institutes to describe the protocols for second generation digital cellular networks. 

GSM provides standard features like cell phone encryption, data networking, caller ID, call forwarding, call waiting, SMS and conferencing and it can be used in an application like home automation, mobile technology, toll collection, energy conversion etc. GSM has both advantages and disadvantages of which consumers should be aware of. 

Advantages of GSM :
  • More suitable network with robust features.
  • No roaming charges on International calls. 
  • Worldwide connectivity and extensive coverage. 
  • SAIC and DAIC techniques used in GSM provide very high transmission quality. 
  • The phone works based on the SIM card so that it is easy to change the different varieties of phones by users. 
  • GSM signals don't have any deterioration. 
  • Easy to integrate GSM with other wireless technology such as CDMA and LTE.
  • It has the ability to use repeaters. 
  • Because of the pulse nature of transmission talk time is generally high.
Disadvantages of GSM :
  • Bandwidth lag because of multiple users shares the same bandwidth so the transmission can encounter interface. 
  • It can interfere with certain electronics, such as hearing aids that are due to pulse transmission technology. As a result, many locations, such as hospitals, airports and petrol pumps require cell phones to be turned off. 
  • To increase coverage repeaters are required to be installed. 
  • It provided limited data rate capability so for high data rate advanced version of GSM devices are used. 
  • Many of GSM technology is patented by Qualcomm thus license needs to be obtained from them. 
  • Manufacturers are not releasing IS-95 devices due to the lack of a big market so IS-95 is normally installed in the small tower. 
  • GSM has fixed maximum call sites range up to 35 km that is very limited. 
  • There is no end-to-end encryption of user data. 
  • Several incompatibilities within the GSM standards. 
  • Electromagnetic radiation is more with the use of GSM.
  • Macrocells affected by the multipath signal loss.