  One of the most important multi-carrier transmission techniques used in the
latest wireless communication arena is known as Orthogonal Frequency Division
Multiplexing (OFDM). It has several characteristics such as providing greater
immunity to multipath fading & impulse noise, eliminating Inter Symbol
Interference (ISI) & Inter Carrier Interference (ICI) using a guard interval
known as Cyclic Prefix (CP). A regular difficulty of OFDM signal is high peak
to average power ratio (PAPR) which is defined as the ratio of the peak power
to the average power of OFDM Signal. An improved design of amplitude clipping &
filtering technique of us previously reduced significant amount of PAPR with
slightly increase bit error rate (BER) compare to an existing method in case of
Quadrature Phase Shift Keying (QPSK) & Quadrature Amplitude Modulation (QAM).
This paper investigates a comparative performance analysis of the different
higher order modulation techniques on that design.
