In this paper, we consider a Joint Network Channel Decoding (JNCD) algorithm applied to a
wireless network consisting to M users. For this purpose M sources desire to send information
to one receiver by the help of an intermediate node which is the relay. The Physical Layer
Network Coding (PLNC) allows the relay to decode the combined information being sent from
different transmitters. Then, it forwards additional information to the destination node which
receives also signals from source nodes. An iterative JNCD algorithm is developed at the
receiver to estimate the information being sent from each transmitter. Simulation results show
that the Bit Error Rate (BER) can be decreased by using this concept comparing to the
reference one which doesn’t consider the network coding.