International Journal of Science and Engineering Applications (IJSEA)
OFDM is the most promising modulation technique for most of the wireless and wired communication standards. The basic idea of OFDM is to divide the available spectrum into several sub channels, making all sub channels narrowband which experiences flat fading. OFDM uses the spectrum efficiently due to its orthogonality and prevents interference between the closely spaced carriers. OFDM provides high bandwidth efficiency because the carriers are orthogonal to each other's and multiple carriers share the data among themselves. The main advantage of this transmission technique is their robustness to channel fading in wireless communication environment.