What does CDMA stand for?

Correct option is B

The Correct answer is (b) Code Division Multiple Access.
· CDMA stands for Code Division Multiple Access, which is a channel access method used in various radio communication technologies. It allows multiple users to share the same frequency band simultaneously by assigning unique codes to each user. This technique helps in efficiently using the available bandwidth and minimizing interference between users.
Key Points:
1. Technology: CDMA is a spread-spectrum technology, where the data signal is spread over a wider bandwidth using a unique code for each user.
2. Simultaneous Communication: It enables multiple users to communicate simultaneously over a single channel without interference.
3. Used In: Widely used in mobile telephony, particularly in the 2G and 3G cellular networks.
4. Efficiency: CDMA offers high spectral efficiency, meaning it can handle more simultaneous calls than other access technologies like TDMA.
5. Security: Provides a level of security as the unique code makes it difficult for unauthorized users to intercept the signal.
6. Global Usage: CDMA technology has been adopted by several mobile networks worldwide, especially in North America and parts of Asia.