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Many images and videos are primarily processed by computer vision algorithms, involving only occasional human inspection. When this content requires compression before processing, e.g., in distributed applications, coding methods must…

图像与视频处理 · 电气工程与系统科学 2025-08-27 Samuel Fernández-Menduiña , Eduardo Pavez , Antonio Ortega

Using tools developed in a recent work by Shen and the second author, in this paper we carry out an in-depth study on the average decoding error probability of the random matrix ensemble over the erasure channel under three decoding…

信息论 · 计算机科学 2024-04-23 Chin Hei Chan , Fang-Wei Fu , Maosheng Xiong

We consider the problem of constructing an erasure code for storage over a network when the data sources are distributed. Specifically, we assume that there are n storage nodes with limited memory and k<n sources generating the data. We…

信息论 · 计算机科学 2016-11-15 Alexandros G. Dimakis , Vinod Prabhakaran , Kannan Ramchandran

We formulate quantum rate-distortion theory in the most general setting where classical side information is included in the tradeoff. Using a natural distortion measure based on entanglement fidelity and specializing to the case of an…

量子物理 · 物理学 2009-09-25 Igor Devetak , Toby Berger

A general method of coding over expansion is proposed,which allows one to reduce the highly non-trivial problems of coding over analog channels and compressing analog sources to a set of much simpler subproblems, coding over discrete…

信息论 · 计算机科学 2015-05-21 Hongbo Si , O. Ozan Koyluoglu , Kumar Appaiah , Sriram Vishwanath

The quantum analog of the classical erasure channel provides a simple example of a channel whose asymptotic capacity for faithful transmission of intact quantum states, with and without the assistance of a two-way classical side channel,…

量子物理 · 物理学 2008-11-26 Charles H. Bennett , David P. DiVincenzo , John A. Smolin

The transmission of a Gaussian source over a block-fading multiple antenna channel in the presence of a feedback link is considered. The feedback link is assumed to be an error and delay free link of capacity 1 bit per channel use. Under…

信息论 · 计算机科学 2016-11-17 Deniz Gunduz , Andrea Goldsmith , H. Vincent Poor

Assuming iterative decoding for binary erasure channels (BECs), a novel tree-based technique for upper bounding the bit error rates (BERs) of arbitrary, finite low-density parity-check (LDPC) codes is provided and the resulting bound can be…

信息论 · 计算机科学 2007-07-13 Chih-Chun Wang , Sanjeev R. Kulkarni , H. Vincent Poor

We consider a binary erasure version of the n-channel multiple descriptions problem with symmetric descriptions, i.e., the rates of the n descriptions are the same and the distortion constraint depends only on the number of messages…

信息论 · 计算机科学 2016-11-15 Ebad Ahmed , Aaron B. Wagner

Whenever inspected by humans, reconstructed signals should not be distinguished from real ones. Typically, such a high perceptual quality comes at the price of high reconstruction error, and vice versa. We study this distortion-perception…

信息论 · 计算机科学 2024-02-06 Dror Freirich , Nir Weinberger , Ron Meir

We revisit the Gray-Wyner lossy source coding problem and derive the first-order asymptotic optimal rate-distortion-perception region when additional perception constraints are imposed on reproduced source sequences. The optimal trade-off…

信息论 · 计算机科学 2026-01-19 Yu Yang , Yingxin Zhang , Weijie Yuan , Lin Zhou

We provide tight upper and lower bounds on the noise resilience of interactive communication over noisy channels with feedback. In this setting, we show that the maximal fraction of noise that any robust protocol can resist is 1/3.…

数据结构与算法 · 计算机科学 2015-01-06 Klim Efremenko , Ran Gelles , Bernhard Haeupler

We investigate properties of a channel coding scheme leading to the minimum-possible frame error ratio when transmitting over a memoryless channel with rate R>C. The results are compared to the well-known properties of a channel coding…

信息论 · 计算机科学 2009-03-21 Johannes B. Huber , Thorsten Hehn

In this paper, the duality of erasures and defects will be investigated by comparing the binary erasure channel (BEC) and the binary defect channel (BDC). The duality holds for channel capacities, capacity achieving schemes, minimum…

信息论 · 计算机科学 2019-12-25 Yongjune Kim , B V K Vijaya Kumar

We consider the problem of determining the power ratio between the training symbols and data symbols in order to maximize the channel capacity for transmission over uncertain channels with a channel estimate available at both the…

信息论 · 计算机科学 2015-05-13 Ather Gattami

In this paper, delay-limited transmission of quasi-stationary sources over block fading channels are considered. Considering distortion outage probability as the performance measure, two source and channel coding schemes with power adaptive…

信息论 · 计算机科学 2012-02-29 Roghayeh Joda , Farshad Lahouti

A transmitter without channel state information (CSI) wishes to send a delay-limited Gaussian source over a slowly fading channel. The source is coded in superimposed layers, with each layer successively refining the description in the…

信息论 · 计算机科学 2009-10-22 Chris T. K. Ng , Deniz Gunduz , Andrea Goldsmith , Elza Erkip

We consider the recovery of a continuous-time Wiener process from a quantized or lossy compressed version of its uniform samples under limited bitrate and sampling rate. We derive a closed form expression for the optimal tradeoff among…

信息论 · 计算机科学 2018-07-27 Alon Kipnis , Andrea J. Goldsmith , Yonina C. Eldar

We consider the problem of lossy source coding with a mismatched distortion measure. That is, we investigate what distortion guarantees can be made with respect to distortion measure $\tilde{\rho}$, for a source code designed such that it…

信息论 · 计算机科学 2008-04-07 Urs Niesen , Devavrat Shah , Gregory Wornell

This paper shows that the capacity region of the continuous-time Poisson broadcast channel is achieved via superposition coding for most channel parameter values. Interestingly, the channel in some subset of these parameter values does not…

信息论 · 计算机科学 2015-08-28 Hyeji Kim , Benjamin Nachman , Abbas El Gamal
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