activity
20122026
most citedThe Capacity of Some Pólya String Models

2 citations · 2 across the 14 of their papers we have counts for

collaborators

22 papers

cs.IT2026

The Coverage Depth Problem in Distributed DNA Data Storage

Xiangliang Kong, Ohad Elishco, Chen Wang +1

Random sampling in DNA sequencing produces repeated reads, increasing retrieval latency and sequencing cost. We study the coverage-depth problem for full-message recovery in distri…

cs.IT2026

More on Codes for Combinatorial Composite DNA

Zuo Ye, Omer Sabary, Ryan Gabrys +2

In this paper, we focus on constructions of unique-decodable/list-decodable on the recently studied -composite-asymmetric error-correcting codes (-CAECCs). Let be…

cs.IT2026

Quantum Codes with Transversal Gates and Sublinear -Stabilizers

Ohad Elishco, Itzhak Tamo

We construct asymmetric quantum CSS codes with transversal \(CCZ\) gates from algebraic expander codes \cite{KT26}. For every fixed \(m\ge 3\), our growing-alphabet codes have leng…

cs.IT2026

Central Limit Theorem for Mutation Systems

Liav Koram, Ohad Elishco

DNA-based storage has emerged as a promising alternative to traditional data storage methods, offering unmatched advantages in data density, longevity, and sustainability. Two main…

cs.IT2025

Coding for Ordered Composite DNA Sequences

Besart Dollma, Ohad Elishco, Eitan Yaakobi

To increase the information capacity of DNA storage, composite DNA letters were introduced. We propose a novel channel model for composite DNA in which composite sequences are deco…

cs.IT2025

On Multidimensional 2-Weight-Limited Burst-Correcting Codes

Hagai Berend, Ohad Elishco, Moshe Schwartz

We consider multidimensional codes capable of correcting a burst error of weight at most . When two positions are in error, the burst limits their relative position. We study th…

cs.IT2025

Making it to First: The Random Access Problem in DNA Storage

Avital Boruchovsky, Ohad Elishco, Ryan Gabrys +3

In this paper, we study the Random Access Problem in DNA storage, which addresses the challenge of retrieving a specific information strand from a DNA-based storage system. In this…

cs.IT2024

Codes Correcting Two Bursts of Exactly Deletions

Zuo Ye, Yubo Sun, Wenjun Yu +2

In this paper, we investigate codes designed to correct two bursts of deletions, where each burst has a length of exactly , where . The previous best construction, achieved…

cs.IT2024

On the Long-Term behavior of -tuples Frequencies in Mutation Systems

Ohad Elishco

In response to the evolving landscape of data storage, researchers have increasingly explored non-traditional platforms, with DNA-based storage emerging as a cutting-edge solution.…

cs.IT2023

Bounds and Constructions for Generalized Batch Codes

Xiangliang Kong, Ohad Elishco

Private information retrieval (PIR) codes and batch codes are two important types of codes that are designed for coded distributed storage systems and private information retrieval…

cs.IT2023

Storage codes and recoverable systems on lines and grids

Alexander Barg, Ohad Elishco, Ryan Gabrys +2

A storage code is an assignment of symbols to the vertices of a connected graph with the property that the value of each vertex is a function of the values of its neighbor…

cs.IT2023

Codes Over Absorption Channels

Zuo Ye, Ohad Elishco

In this paper, we present a novel communication channel, called the absorption channel, inspired by information transmission in neurons. Our motivation comes from in-vivo nano-mach…

cs.IT2022

Reconstruction of a Single String from a Part of its Composition Multiset

Zuo Ye, Ohad Elishco

Motivated by applications in polymer-based data storage, we study the problem of reconstructing a string from part of its composition multiset. We give a full description of the st…

cs.IT2022

Optimal Reference for DNA Synthesis

Ohad Elishco, Wasim Huleihel

In the recent years, DNA has emerged as a potentially viable storage technology. DNA synthesis, which refers to the task of writing the data into DNA, is perhaps the most costly pa…

cs.IT2020

Recoverable Systems

Ohad Elishco, Alexander Barg

Motivated by the established notion of storage codes, we consider sets of infinite sequences over a finite alphabet such that every -tuple of consecutive entries is uniquely rec…

cs.IT2019

Repeat-Free Codes

Ohad Elishco, Ryan Gabrys, Eitan Yaakobi +1

In this paper we consider the problem of encoding data into \textit{repeat-free} sequences in which sequences are imposed to contain any -tuple at most once (for predefined )…

cs.IT2019

Capacity of dynamical storage systems

Ohad Elishco, Alexander Barg

We introduce a dynamical model of node repair in distributed storage systems wherein the storage nodes are subjected to failures according to independent Poisson processes. The mai…

cs.IT2018★ 2 cited

The Capacity of Some Pólya String Models

Ohad Elishco, Farzad Farnoud, Moshe Schwartz +1

We study random string-duplication systems, which we call Pólya string models. These are motivated by DNA storage in living organisms, and certain random mutation processes that af…

math.DS2017

On Independence and Capacity of Multidimensional Semiconstrained Systems

Ohad Elishco, Tom Meyerovitch, Moshe Schwartz

We find a new formula for the limit of the capacity of certain sequences of multidimensional semiconstrained systems as the dimension tends to infinity. We do so by generalizing th…

cs.IT2016

Encoding Semiconstrained Systems

Ohad Elishco, Tom Meyerovitch, Moshe Schwartz

Semiconstrained systems were recently suggested as a generalization of constrained systems, commonly used in communication and data-storage applications that require certain offend…

cs.IT2014

Semi-constrained Systems

Ohad Elishco, Tom Meyerovitch, Moshe Schwartz

When transmitting information over a noisy channel, two approaches, dating back to Shannon's work, are common: assuming the channel errors are independent of the transmitted conten…

cs.IT2012

Capacity and coding for the Ising Channel with Feedback

Ohad Elishco, Haim Permuter

The Ising channel, which was introduced in 1990, is a channel with memory that models Inter-Symbol interference. In this paper we consider the Ising channel with feedback and find…