Correct Answer - Option 2 : Code Division Multiple Access
- CDMA stands for Code Division Multiple Access.
- It is a wireless technology used in the transmission of signals from places with high security and Noise reduction.
- The principle of the spread spectrum is used to work with CDMA.
- CDMA is not frequency specific to each user, instead, every channel uses the full available spectrum.
- Each user in a CDMA system uses a different code to modulate their signal.
- Wide band usage in CDMA has advantages like increased immunity to interference, jamming and also the frequency can be reused among multiple users divided using different codes.
In general, CDMA belongs to two basic categories.
(a) Synchronous (orthogonal codes)
(b) Asynchronous (pseudorandom codes).
