Taking aside other different multiple access technologies, there are three FDMA, TDMA and CDMA highly being used and acclaimed.
FDMA – The available frequency range is divided in to frequency slots and each slot is provided to each user or for purposes. 1G was totally based on this technology.
TDMA – Similar to FDMA, but here available time frame is divided in to a limited time slots and in each slot data of different user are transmitted. Europe used this technique to develop GSM, 2G standard mobile.
CDMA – Neither frequency nor time are used, rather code to transmit data of different users within a wideband. North America used the technique to develop IS-95, 2G standard mobile.
It may seem tough to understand these technologies in such above languages. These all techniques are being used by us in our life unknowingly.
FDMA – Whatever one needs something, give him a portion of something. In FDMA case, something is frequency as a channel. This is the simple and easy process that we are using in our daily life since when FDMA term wasn’t in existence.
Read the rest of this entry »