The present invention relates to a transceiver for bidirectional frequency
division multiplexed transmission, a communication system including one
or more transceivers. Optionally, the communication system is a
communication system for a digital subscriber line. The transceiver
comprises transmission means with a voltage source output or a current
source output for transmitting data in a transmission frequency range,
receiving means for receiving data in a receiving frequency range, and a
coupling impedance for connecting the transmission means and the
receiving means to a transmission medium. The magnitude of the coupling
impedance in the transmission frequency range is smaller than the
magnitude of the coupling impedance in the receiving frequency range if
the transmission means has a voltage source output and is higher than the
magnitude of the coupling impedance in the receiving frequency range if
the transmission means has a current source output.