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The problem of optimal real-time transmission of a Markov source under constraints on the expected number of transmissions is considered, both for the discounted and long term average cases. This setup is motivated by applications where…

信息论 · 计算机科学 2014-12-11 Jhelum Chakravorty , Aditya Mahajan

In this lecture I give a brief review of low-dimensional few-body problems recently encountered in attempting a quantitative description of ultracold atoms and molecules confined in 2D and 1D optical lattices. Multi-channel nature of these…

计算物理 · 物理学 2011-10-21 Vladimir S. Melezhik

In this paper, a generic extension of variational mode decomposition (VMD) algorithm for multivariate or multichannel data sets is presented. We first define a model for multivariate modulated oscillations that is based on the presence of a…

信号处理 · 电气工程与系统科学 2020-01-08 Naveed ur Rehman , Hania Aftab

Some state-of-art multimedia source encoders produce embedded source bit streams that upon the reliable reception of only a fraction of the total bit stream, the decoder is able reconstruct the source up to a basic quality. Reliable…

多媒体 · 计算机科学 2014-03-04 Suayb S. Arslan

Recent works on compression of large language models (LLM) using quantization considered reparameterizing the architecture such that weights are distributed on the sphere. This demonstratively improves the ability to quantize by increasing…

机器学习 · 计算机科学 2024-12-05 Tycho F. A. van der Ouderaa , Maximilian L. Croci , Agrin Hilmkil , James Hensman

We propose a multi-reference and adaptive nonlinear transform source-channel coding (MA-NTSCC) system for wireless image semantic transmission to improve rate-distortion (RD) performance by introducing multi-dimensional contexts into the…

信号处理 · 电气工程与系统科学 2025-05-20 Cheng Yuan , Yufei Jiang , Xu Zhu

Non-parametric quantization has received much attention due to its efficiency on parameters and scalability to a large codebook. In this paper, we present a unified formulation of different non-parametric quantization methods through the…

计算机视觉与模式识别 · 计算机科学 2025-12-17 Yue Zhao , Hanwen Jiang , Zhenlin Xu , Chutong Yang , Ehsan Adeli , Philipp Krähenbühl

In this paper, we propose a non-uniform windowed decoder for multi-dimensional spatially-coupled LDPC (MD-SC-LDPC) codes over the binary erasure channel. An MD-SC-LDPC code is constructed by connecting together several SC-LDPC codes into…

信息论 · 计算机科学 2020-05-13 Lev Tauz , Homa Esfahanizadeh , Lara Dolecek

This paper investigates a unification of distributed source coding, multiple description coding, and source coding with side information at decoders. The equivalence between the multiple-decoder extension of distributed source coding with…

信息论 · 计算机科学 2024-10-28 Jun Muramatsu

The model of a side information "vending machine" (VM) accounts for scenarios in which the measurement of side information sequences can be controlled via the selection of cost-constrained actions. In this paper, the three-node cascade…

信息论 · 计算机科学 2012-07-13 Behzad Ahmadi , Chiranjib Choudhuri , Osvaldo Simeone , Urbashi Mitra

Quantizing a floating-point neural network to its fixed-point representation is crucial for Learned Image Compression (LIC) because it improves decoding consistency for interoperability and reduces space-time complexity for implementation.…

图像与视频处理 · 电气工程与系统科学 2023-10-10 Junqi Shi , Ming Lu , Zhan Ma

We consider the asymmetric multilevel diversity (A-MLD) coding problem, where a set of $2^K-1$ information sources, ordered in a decreasing level of importance, is encoded into $K$ messages (or descriptions). There are $2^K-1$ decoders,…

信息论 · 计算机科学 2009-11-13 Soheil Mohajer , Chao Tian , Suhas N. Diggavi

This paper presents novel techniques for improving the error correction performance and reducing the complexity of coarsely quantized 5G-LDPC decoders. The proposed decoder design supports arbitrary message-passing schedules on a…

信息论 · 计算机科学 2025-08-19 Philipp Mohr , Gerhard Bauch

This paper demonstrates a new side-channel that enables an adversary to extract sensitive information about inference inputs in large language models (LLMs) based on the number of output tokens in the LLM response. We construct attacks…

机器学习 · 计算机科学 2024-12-23 Tianchen Zhang , Gururaj Saileshwar , David Lie

This paper develops a general method for constructing entanglement-assisted quantum low-density parity-check (LDPC) codes, which is based on combinatorial design theory. Explicit constructions are given for entanglement-assisted quantum…

Vector perturbation is an encoding method for broadcast channels in which the transmitter solves a shortest vector problem in a lattice to create a perturbation vector, which is then added to the data before transmission. In this work, we…

信息论 · 计算机科学 2016-04-26 David A. Karpuk , Amaro Barreal , Oliver W. Gnilke , Camilla Hollanti

We present a method for efficiently finding solutions of L\"uscher's quantisation condition, the equation which relates two-particle scattering amplitudes to the discrete spectrum of states in a periodic spatial volume of finite extent such…

高能物理 - 格点 · 物理学 2020-07-01 Antoni J. Woss , David J. Wilson , Jozef J. Dudek

This paper studies coding schemes for the $q$-ary symmetric channel based on binary low-density parity-check (LDPC) codes that work for any alphabet size $q=2^m$, $m\in\mathbb{N}$, thus complementing some recently proposed packet-based…

信息论 · 计算机科学 2015-03-13 Claudio Weidmann , Gottfried Lechner

We study the following semi-deterministic setting of the joint source-channel coding problem: a deterministic source sequence (a.k.a. individual sequence) is transmitted via a memoryless channel, using delay-limited encoder and decoder,…

信息论 · 计算机科学 2021-09-29 Neri Merhav

In this work we show that the size versus accuracy trade-off of neural network quantization can be significantly improved by increasing the quantization dimensionality. We propose the GPTVQ method, a new fast method for post-training vector…