One of the key parts in a mobile telecommunication tenninal is the transceiver. The tenn transceiver stems from the words transmitter and receiver. These words refer to the main task of a transceiver. In the context of a mobile telecommunication tenninal, the receiver transfonns the signals coming from the antenna into signals which can then be converted into the digital domain. The
transmitter converts the analog version of the digital data stream at baseband into a signal at radio frequencies, and delivers this signal to the antenna with a certain amount of power.