Progressive Image Transmission Using OFDM System

Abstract: This paper describes a new method for progressive image transmission using Orthogonal Frequency Division Multiplexing (OFDM). Low Density Parity Check Coding (LDPC) is used to improve the BER of the system. Trigonometric transforms are used for reducing the Peak-to-Average Power Ratio (PAPR) of OFDM signal. The Set Partitioning In Hierarchical Trees (SPIHT) algorithm is used for source coding of the images. In this method, the transmit data sequence of the OFDM signal is grouped into in-phase and in-quadrature components after Inverse Fast Fourier Transform (IFFT), then each component is transformed using Discrete Cosine Transform (DCT) or Discrete Sine Transform (DST).

Keywords: OFDM, PAPR, SPIHT, LDPC.