Variable-length code
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The use of asymmetric numeral systems as an accurate replacement for Huffman coding Open
Entropy coding is an integral part of most data compression systems. Huffman coding (HC) and arithmetic coding (AC) are two of the most widely used coding methods. HC can process a large symbol alphabet at each step allowing for fast encod…
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Transform Coding in the VVC Standard Open
In the past decade, the development of transform coding techniques has achieved significant progress and several advanced transform tools have been adopted in the new generation Versatile Video Coding (VVC) standard. In this paper, a brief…
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Introduction to Arithmetic Coding -- Theory and Practice Open
This introduction to arithmetic coding is divided in two parts. The first explains how and why arithmetic coding works. We start presenting it in very general terms, so that its simplicity is not lost under layers of implementation details…
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Quantization and Entropy Coding in the Versatile Video Coding (VVC) Standard Open
The paper provides an overview of the quantization and entropy coding methods in the Versatile Video Coding (VVC) standard. Special focus is laid on techniques that improve coding efficiency relative to the methods included in the High Eff…
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A Unified Approach to Hybrid Coding Open
Hybrid analog-digital coding has been used for several communication scenarios, such as joint source-channel coding of Gaussian sources over Gaussian channels and relay communication over Gaussian networks. In this paper, a generalized hyb…
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A Comparison of Channel Coding Schemes for 5G Short Message Transmission Open
Different coding schemes (Turbo, Polar, binary and non-binary LDPC and tail-biting convolutional codes) which can be potentially used in the next generation mobile communication systems for the short message length regime (message length k…
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Intra Frame Coding In Advanced Video Coding Standard (H.264) to Obtain Consistent PSNR and Reduce Bit Rate for Diagonal Down Left Mode Using Gaussian Pulse Open
Intra prediction process of H.264 video coding standard used to code first frame i.e. Intra frame of video to obtain good coding efficiency compare to previous video coding standard series. More benefit of intra frame coding is to reduce s…
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Information-Theoretic Caching: Sequential Coding for Computing Open
Under the paradigm of caching, partial data is delivered before the actual\nrequests of users are known. In this paper, this problem is modeled as a\ncanonical distributed source coding problem with side information, where the\nside inform…
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How to Achieve the Capacity of Asymmetric Channels Open
We survey coding techniques that enable reliable transmission at rates that approach the capacity of an arbitrary discrete memoryless channel. In particular, we take the point of view of modern coding theory and discuss how recent advances…
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On the Dispersions of the Gel’fand–Pinsker Channel and Dirty Paper Coding Open
This paper studies the second-order coding rates for memoryless channels with a state sequence known non-causally at the encoder. In the case of finite alphabets, an achievability result is obtained using constant-composition random coding…
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DSEP Fulcrum: Dynamic Sparsity and Expansion Packets for Fulcrum Network Coding Open
Fulcrum coding combines a high-field outer Random Linear Network Coding (RLNC) that generates outer coding expansion packets with a small-field inner RLNC that combines the source packets and the outer coding expansion packets. This two-la…
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Inter-Prediction Optimizations for Video Coding Using Adaptive Coding Unit Visiting Order Open
The flexible partitioning scheme and increased number of prediction modes in the high efficiency video coding (HEVC) standard are largely responsible for both its high compression efficiency and computational complexity. In typical HEVC en…
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Limited Coding-Length-Based Sliding-Mode Control With Adaptive Quantizer’s Parameter Open
In Niu and Ho (2014), an interesting issue was investigated on how an existing controller can still achieve the same control performance under the quantization case by designing the online adjusting strategy for the quantizer's parameter. …
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Semantic Communications With Variable-Length Coding for Extended Reality Open
Wireless extended reality (XR) has attracted wide attentions as a promising technology to improve users' mobility and quality of experience. However, the ultra-high data rate requirement of wireless XR has hindered its development for many…
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Efficient Channel Coding for Dimmable Visible Light Communications System Open
Visible light communication (VLC) offers wireless communication within short-range based on wavelength converters and light-emitting diode (LED). In the VLC system, conventional forward error correction (FEC) codes are not guaranteed to pr…
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The JPEG Pleno Light Field Coding Standard 4D-Transform Mode: How to Design an Efficient 4D-Native Codec Open
The increasing demand for highly realistic and immersive visual experiences has led to the emergence of richer 3D visual representation models such as light fields, point clouds and meshes. Light fields may be modelled as a 2D array of 2D …
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Quantum Rate-Distortion Coding of Relevant Information Open
Rate-distortion theory provides bounds for compressing data produced by an information source to a specified encoding rate that is strictly less than the source's entropy. This necessarily entails some loss, or distortion, between the orig…
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Context-Adaptive Binary Arithmetic Coding With Fixed-Length Codewords Open
Context-adaptive binary arithmetic coding is a widespread technique in the field of image and video coding. Most state-of-the-art arithmetic coders produce a (long) codeword of a priori unknown length. Its generation requires a renormaliza…
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Multiuser Random Coding Techniques for Mismatched Decoding Open
This paper studies multiuser random coding techniques for channel coding with a given (possibly suboptimal) decoding rule. For the mismatched discrete memoryless multiple-access channel, an error exponent is obtained that is tight with res…
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Rate-distortion-perception tradeoff of variable-length source coding for general information sources Open
Blau and Michaeli recently introduced a novel concept for inverse problems of signal processing, that is, the perception-distortion tradeoff. We introduce their tradeoff into the rate distortion theory of variable-length lossy source codin…
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An Efficient Feedback Coding Scheme With Low Error Probability for Discrete Memoryless Channels Open
Existing fixed-length feedback communication schemes are either specialized\nto particular channels (Schalkwijk--Kailath, Horstein), or apply to general\nchannels but either have high coding complexity (block feedback schemes) or are\ndiff…
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Joint Adaptive Coding and Reversible Data Hiding for AMBTC Compressed Images Open
This paper proposes a joint coding and reversible data hiding method for absolute moment block truncation coding (AMBTC) compressed images. Existing methods use a predictor to predict the quantization levels of AMBTC codes. Equal-length in…
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Information Leakages in Code-based Masking: A Unified Quantification Approach Open
This paper presents a unified approach to quantifying the information leakages in the most general code-based masking schemes. Specifically, by utilizing a uniform representation, we highlight first that all code-based masking schemes’ sid…
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Quantum Coding Bounds and a Closed-Form Approximation of the Minimum Distance Versus Quantum Coding Rate Open
The trade-off between the quantum coding rate and the associated error correction capability is characterized by the quantum coding bounds. The unique solution for this trade-off does not exist, but the corresponding lower and the upper bo…
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Distributed Source Coding and Its Applications in Relaying-Based Transmission Open
Distributed source coding (DSC) schemes rely on separate encoding but joint decoding of statistically dependent sources, which exhibit correlation. DSC has numerous promising applications ranging from reduced-complexity handheld video comm…
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Exponential Strong Converse for One Helper Source Coding Problem Open
We consider the one helper source coding problem posed and investigated by Ahlswede, Körner and Wyner. Two correlated sources are separately encoded and are sent to a destination where the decoder wishes to decode one of the two sources wi…
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Optimized Rate-Adaptive Protograph-Based LDPC Codes for Source Coding With Side Information Open
International audience
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Secure Network Coding With Erasures and Feedback Open
Secure network coding assumes that the underlying network channels are error-free; thus, if our channels introduce errors, we need to first apply a channel code to correct them, and then build security on top of the resulting error-free ne…
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Exponent function for one helper source coding problem at rates outside the rate region Open
We consider the one helper source coding problem posed and investigated by Ahlswede, Körner and Wyner. In this system, the error probability of decoding goes to one as the source block length $n$ goes to infinity. This implies that we have…
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Resource Tuned Optimal Random Network Coding for Single Hop Multicast future 5G Networks Open
Optimal random network coding is reduced complexity in computation of coding coefficients, computation of encoded packets and coefficients are such that minimal transmission bandwidth is enough to transmit coding coefficient to the destina…