QR Code Transmission Using DPSK-OFDM
The concept of Quick Response (QR) code is very useful in wireless data transmission between handheld
electronic devices. In a typical setup, for transmission of Data on a cell phone, can be transferred to a second cell phone
through a series of barcode images on the LCD which are then captured and decoded through the camera of the second cell
phone. In this, a new approach for data modulation DPSK-OFDM is introduced, and its performance is evaluated to compare
with other standard methods of barcode modulation. OFDM uses orthogonal subcarrier and confine image blur & minimizes
the Bit Error Rate. OFDM modulation is performed using DFT.
Index Terms— QR code, OFDM, DPSK, DFT, BER.