Firstly, the attached document provided by you doesn't give sufficient information. For example, while speaking of channel model, You want a flat fadding channel or freq. selective one.
Secondly, what i have understood, please correct me if i am wrong, that you want to compare the performance of QPSK with OFDM.
Thirdly, You didn't mentioned, the work you required should be either in simulink or in m-file based.
Any further details would help me more.
Regards,
Tahir Akram