Source and channel coding are two problems that have traditionally been implemented separately, forming what is known as a tandem source-channel coding system. The separation of channel and source coding is only optimal in an asymptotic sense, i.e., when no constraints exist on the coding block lengths (delay) and on the complexity of the encoder/decoder [1]. Joint source-channel coding, howeve...

Very efficient still image compression methods exist today, but most of them are not fit for transmission on error prone channels. One example of state-of-the-art robust image coding is the use of wavelet compression followed by forward error correction (FEC), as proposed by Sherwood and Zeger, that gives high coding efficiency but suffers from the incomplete decoding problem. An alternative to...

This paper presents a practical architecture for joint source-channel coding of human visual model based video transmission over satellite channel. Perceptual distortion model justnoticeable-distortion (JND) is applied to improve the subjective quality of compressed videos. 3D wavelet decomposition can remove spatial and temporal redundancy and provide scalability of video quality. In order to ...

It has recently been shown that for an image or video transmission scheme to be both eecient and robust in practice that a joint source-channel coding approach is necessary. In this work, we discuss recent eeorts in the eld of joint source-channel coding of images and video. We then present a general methodology for determining the optimal tradeoo between source and channel coding as a function...

Due to their computational complexity, iterative decoder components such as source and channel decoders are usually implemented using specialized dedicated hardware. This leads to the scenario where each different iterative decoder component of the receiver requires its own hardware. Owing to their relatively high complexity, many capacity-approaching techniques proposed in the literature have ...

In this study, the problem of transmitting an independent and identically distributed (i.i.d.) Gaussian source over an i.i.d. Gaussian wire-tap channel, with an i.i.d. Gaussian known interference available at the transmitter is considered. The intended receiver is assumed to have a certain minimum signal-to-noise ratio (SNR) and the eavesdropper is assumed to have a strictly lower SNR compared ...