CDMA Full Form- Code Division Multiple Access

What is CDMA? The full form of CDMA is Code Division Multiple Access. 

One transmitter can encode various data sources and broadcast them all over a single RF carrier using code-division multiple access (CDMA), or many transmitters can use a single RF carrier frequency. 

Using an exclusive-OR gate, the information signal can be digitally modulated using a pseudo-random noise (PRN) code before phase-modulating the RF carrier. For every information data bit, several chips are formed since the bit rate of the PRN code, also known as the chip rate, is substantially larger compared to the bit rate of the information. 

For instance, a PRN sequence modulating a 19.2-kbps information signal in a mobile telecommunications system produces 1.25 M chips every second, or roughly 65 chips per bit.

How does CDMA Work?

Spread spectrum techniques are used by Code-Division several Access (CDMA), a digital cellular technology, to allow several users to share a single frequency band at the same time. Every user in a CDMA system is given a special code that is used to disperse their signal throughout the whole frequency range. This makes it possible for several users to coexist peacefully in the same frequency band, making better use of the available spectrum resources possible. 

This is a broad summary of how CDMA functions:

• A user wishes to use a wireless network to send data to another user.
• First, the user's unique code is applied to the data to encrypt it.
• The given code is then used to distribute the encoded data throughout the whole frequency band during transmission.
• With the same code, the recipient decodes the data and is able to retrieve the original data.
• After that, the data can be processed and used by the recipient as needed.
• We call this spread spectrum communication technique. Compared to other cellular technologies, CDMA offers a number of benefits, such as increased capacity, enhanced spectrum efficiency, and greater immunity to interference. It is especially ideally suited for use in high-interference conditions, such as cities with a dense population of wirelessly connected gadgets.