The full form of CDMA is Code Division Multiple Access. It is a technique for channel access and a good illustration of multiple access. Multiple transmitters can all send data simultaneously to a single communication channel, according to the concept of multiple access.
A number of users are given different CDMA codes, allowing them access to the whole frequency range or bandwidth. The user’s choice of frequencies is not constrained by this technique. Consequently, CDMA enables several users to share a frequency band without any pointless interference. Spectrum technology can be used in conjunction with CDMA and ADC (analogue to digital conversion).
Excel in IELTS with India’s Top Online Coaching
Leap has helped more than 1 Lakh students achieve 7+ IELTS band.
Qualities of CDMA
- It gives increased capacity for voice and data transmission at a set time by allowing more people to communicate.
- Many CDMA channels make use of the entire spectrum.
- Power control is used by CDMA systems to lessen interference and noise and boost network performance.
- CDMA separates and special-codes user transmissions in order to secure its signals.
- In CDMA systems, all cells may potentially use the same frequency.
- Additionally, there is no set cap on the number of participants in a CDMA system, but performance suffers as the number of users rises.
CDMA Applications
- GPS makes use of CDMA (Global Positioning System)
- Many mobile phone companies make use of this technology
- W-CDMA is used in the UTMS 3 G cell phone standard
- The OmniTRACS satellite transportation system utilised CDMA