Multicarrier OFDM Communication for High Power Amplifiers

Multi-carrier orthogonal frequency division multiplexing (OFDM) system has gained popularity in the recent time and is used for multimedia communication systems. It has many advantages over single carrier modulation systems such as high data rate transmission capability, robustness to radio channel impairments and spectral efficiency. It also suffers from high peak-to-average power ratio (PAPR), timing and frequency synchronization errors and co-channel interference (CCI). For high power amplifiers larger PAPR value is undesirable as it causes to operate in the nonlinear mode. This paper deals with the transceiver of multi carrier OFDM system. The Matlab simulation depicts description of the major steps involved in the generation and reception of an OFDM signal. PAPR value of base band and pass band signals has been obtained for BPSK and QPSK modulation scheme. The simulated PARR values of base band and pass band signal are 0dB and 3.01dB respectively.