关键词: 自适应图像传输, 正交频分复用(OFDM), 人眼视觉系统(HVS)

Abstract:

According to the conventional image transmission method, an adaptive image transmission scheme based on HVS in OFDM(Orthogonal Frequency Division Multiplexing) system over frequency selective slow fading channel was proposed in this paper. It combined adaptive sub-channel distribution technique with source partition and characteristics of fading channel to improve the quality of received image. In order to verify the good performance of the proposed method, three kinds of image were used in the simulations. Significant improvement in PSNR(Peak Signal Noise Ratio) of received image with adaptive image transmission relative to conventional one is demonstrated by the simulation results of three different image sources and theoretical analysis.

Key words: adaptive image transmission, Orthogonal Frequency Division Multiplexing(OFDM, Human Visual System (HVS)