The major challenge in multicarrier transmission is peak average power (PAPR). The OFDM suffers from the problem
of high PAPR where PAPR is the ration of maximum power in a signal to the average power of any signal. Such kind of
problem is more significant as the efficiency of such systems is limited by the power source. Signals, previously transmitted in the
analog environment, are now gradually being received in the physical world. To efficient reception, multi-carriers substitute only
single-carrier waves. Multi-carrier structures such as CDMA and OFDM are now-a-widely deployed days. The orthogonally
positioned sub – carriers are used in the OFDM framework to move data from the end of the transmitter to the end of the
receiver.
