GSM stands for Global System for Mobile Communication. It is a digital mobile communication standard, which is used for transmitting and receiving data and voice signals over a network. It is also known as the second-generation standard for mobile networks or telecommunication, and it operates on a wedge spectrum.
GSM needs the Subscribers Identity Module (SIM) card as its main component. This is therefore because each device in the network holds its own specific SIM card. Therefore the multiple subscribers of the GSM technology are prominent by SIM. Still, any time the user can change from one SIM card to another thus it provides more dynamically.
CDMA stands for Code Division Multiple Access. It is a channel access method used by several radio communication technologies. It is a digital cellular technology and an example of multiple access. It is generally used for mobile communication.
It is based on the spread spectrum technology and makes optimal use of the available bandwidth. Since it uses the spread spectrum technology, it allows each user to transmit the data over the entire frequency spectrum at any time.
It supports the cellular company’s high capacity for helping various customers as it sends a similar wireless signal to all of the customers.
A CDMA voice call is deeply secure as it is a digital data flow and very tough to intercept. This is because the signals are coded. CDMA facilitates a power control system that reduces interference. It modifies the power level, so the call is easy but without much intrusion.
The major differences between GSM and CDMA are as follows −
|GSM stands for Global System for Mobile Communication.||CDMA stands for Code Division Multiple Access.|
|GSM is based on the wedge spectrum technology, also known as a carrier. This carrier is split into various time slots on the basis of TDMA technology, and each time slot is assigned to each user.||CDMA uses the spread spectrum technology, and hence it makes optimal use of the available bandwidth. It enables each user to transfer the data over the entire frequency spectrum at any time.|
|There is less security compared to CDMA technology.||There is more security provided in CDMA technology.|
|The GSM network operates in the frequency spectrum of 850MHz and 1900MHz.||The CDMA network operates in the frequency spectrum of 850MHz and 1900MHz.|
|A GSM is more flexible than CDMA as the SIM can be replaced with other GSM devices.||A CDMA is not flexible.|
|It provides built-in encryption.||It requires additional encryption as no built-in encryption is available.|
|It enables limited roaming.||It enables worldwide roaming.|