Multi-level priority transmission of images over a turbo-coded channel

Abstract

In this paper we investigate the UEP property of turboThe application of turbo codes (TC) for multi-level priority transmission of image signals over an AWGN channel is presented. The unequal error protection property of the turbo codes is introduced and matched to the unequal error protection requirement for the transmission of coded image signals. Compared to simply distributing the source bits across the TC block bit positions,-the proposed method yields superior performance.codes by transmitting coded image signals over a turbocoded channel using computer simulation. Our simulation results indicate that, by taking advantage of the UEP property, a significant improvement in the quality of the transmitted image can be achieved.The paper is organized as follows. Section 2 presents the turbo-coded channel and the communications model used fro investigate the unequal error protection property of the turbo codes. Section 3 explains the image compression method 1.