抄録
We previously reported the image sensor communication system which transmits information
from a liquid crystal display (LCD) to a camera-equipped mobile device. In this system, two-dimensional
Orthogonal Frequency Division Multiplexing (OFDM) with Quadrature Phase Shift Keying (QPSK) is used
to generate information embedded images shown on the display. In this paper, usage of pilot signals is
investigated for the purpose of improving reliability of the system.
