Acronym for Code Division Multiple Access, is one of two major protocols for digital cellular telephony (the other is TDMA). Unlike TDMA, which gives each phone a unique slice of time in which it may transmit or receive without competition from other users on the same channel, encodes each caller’s signal across the full range of available frequencies; the signals are decoded and separated when they are received. In theory, allows more simultaneous users than TDMA.
Capable of operating at 800 MHz or 1900 MHz, TDMA enables Personal Communication Services (PCS), such as paging, text-based Internet access by means of the Wireless Applications Protocol (WAP), and voice mail, when operating at the higher frequency. Initial versions of services offer point-to-point (circuit-switched) data transfer rates of 14.4 Kbps. US carriers include Sprint PCS and Verizon. Synonymous with spread spectrum and full spectrum. See digital cellular phone, TDMA, WAP.
Technipages Explains CDMA
CDMA means “Code Division Multiple Access.” CDMA is a remote transmission innovation that was created during World War II by the English partners to abstain from having their transmissions stuck by the enemy. After the war ended, Qualcomm patented the innovation and made it industrially accessible as a computerized cell innovation. Presently CDMA is a prominent specialized strategy utilized by numerous phone organizations.
In contrast to the GSM and TDMA innovations, CDMA transmits over the set range of frequency accessible. It doesn’t appoint a particular frequency to every client on the interchanges organize. This strategy, called multiplexing, is what made the transmissions hard to hijack during World War II. Since CDMA does not restrain every client’s frequency range, there is more data transfer capacity accessible. This enables more clients to convey on a similar system at once than if every client was assigned a particular recurrence go.
Common Uses of CDMA
- CDMA became a common trend for the telecommunications company after the eventualities of the World War II
- Over the years, the data transfer takes a long time when you are using CDMA, and it would also be fairly expensive.
- Verizon is also an American telecommunications company that uses CDMA technology
Common Misuses of CDMA
- CDMA was only accessible to consumers in the UK after Qualcomm patent the technology