Intersect embedding on OFDM channel — A stego perspective

The field of digital communication is gifted with OFDM, a very powerful technology that opened doors to several applications requiring higher bandwidth and data rates. It survives severe channel conditions like narrow band interference and frequency selective fading. However, the increasing rate of data piracy accentuates the need for a secure wireless transmission. In this paper, we propose a technique to increase the efficiency of OFDM by incorporating embedding in it. The data is embedded in the system following the steps of modulation and cyclic prefix in the OFDM process. The BER graphs for various modulation schemes like BPSK, QPSK and QAM are analyzed to arrive at the best modulation scheme having higher error tolerance than others.