The required movement tolerance is achieved by putting
data in phase differences of adjacent frequency components
leading to a DPSK-OFDM scheme which would be called
simply the DPSK method throughout this study. Observing
that any phase distortion due to motion blur would affect
neighboring frequency components negligibly, data may be
transmitted reliably even in the vicinity of high LCD, camera
relative motion. A diagram of the system envisioned is shown
in Fig. 2. This method also eliminates the channel estimation
requirements resulting in lower processing power.