Results 41 to 50 of about 317,866 (293)

Efficient Inverted Index Compression Algorithm Characterized by Faster Decompression Compared with the Golomb-Rice Algorithm

open access: yesEntropy, 2021
This article deals with compression of binary sequences with a given number of ones, which can also be considered as a list of indexes of a given length.
Andrzej Chmielowiec, Paweł Litwin
doaj   +1 more source

Index coded PSK modulation [PDF]

open access: yes2016 IEEE Wireless Communications and Networking Conference, 2016
In this paper we consider noisy index coding problem over AWGN channel. We give an algorithm to map the index coded bits to appropriate sized PSK symbols such that for the given index code, in general, the receiver with large amount of side information will gain in probability of error performance compared to the ones with lesser amount, depending upon
Anjana Ambika Mahesh, B. Sundar Rajan
openaire   +2 more sources

Code Equivalences Between Network Codes With Link Errors and Index Codes With Side Information Errors

open access: yesIEEE Access, 2019
In this paper, new code equivalence relationships between a network code and an index code are studied. First, for a given index coding instance, equivalent network coding instances are derived, where an index code achieving the maximum acyclic induced ...
Jae-Won Kim, Jong-Seon No
doaj   +1 more source

On the number of optimal linear index codes for unicast index coding problems [PDF]

open access: yes2016 IEEE Wireless Communications and Networking Conference, 2016
An index coding problem arises when there is a single source with a number of messages and multiple receivers each wanting a subset of messages and knowing a different set of messages a priori. The noiseless Index Coding Problem is to identify the minimum number of transmissions (optimal length) to be made by the source through noiseless channels so ...
R. Kavitha   +2 more
openaire   +2 more sources

Entropy Coding Aided Adaptive Subcarrier-Index Modulated OFDM

open access: yesIEEE Access, 2018
We propose entropy coding-aided adaptive subcarrier-index-modulated orthogonal frequency division multiplexing (SIM-OFDM). In conventional SIM-OFDM, the indices of the subcarriers activated are capable of conveying extra information. We propose the novel
Mohammad Ismat Kadir   +3 more
doaj   +1 more source

Linear Index Coding and Representable Discrete Polymatroids

open access: yes, 2014
Discrete polymatroids are the multi-set analogue of matroids. In this paper, we explore the connections between linear index coding and representable discrete polymatroids. The index coding problem involves a sender which generates a set of messages X = {
Muralidharan, Vijayvaradharaj T   +5 more
core   +1 more source

COMBAT: A New Bitmap Index Coding Algorithm for Big Data

open access: yesTsinghua Science and Technology, 2016
Bitmap indexing has been widely used in various applications due to its speed in bitwise operations. However, it can consume large amounts of memory. To solve this problem, various bitmap coding algorithms have been proposed.
Yinjun Wu   +4 more
doaj   +1 more source

Index coding and error correction [PDF]

open access: yes2011 IEEE International Symposium on Information Theory Proceedings, 2011
A problem of index coding with side information was first considered by Y. Birk and T. Kol (IEEE INFOCOM, 1998). In the present work, a generalization of index coding scheme, where transmitted symbols are subject to errors, is studied. Error-correcting methods for such a scheme, and their parameters, are investigated.
Son Hoang Dau   +2 more
openaire   +2 more sources

An integrated guide to thematic analysis

open access: yesJournalistica
In this section, Journalistica puts a spotlight on research methods used in journalism studies and/or journalism practice.
Miriam Kroman Brems   +1 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

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