water filling without relay.We use simulation results to show the performance of the water filling algorithm. Simplify this question into a OFDM based communication network with one transmitter and one receiver. It is assumed that the total power of

ofdm simulation with 64 qam

This code basically computes the BER of an OFDM system. The ifft size is 64. 16QAM is the modulation Technique and convolution encoding rate 1/2 is used as the coding scheme.

A 16-QAM signal X, whose power is normalized as unity, is transmitted with OFDM over the discrete-time channel model h which has been used in Homework #2 and #3. As depicted in the below figure, the transmitter (TX) is now equipped with an N-point ID