Results 51 to 60 of about 902,097 (310)

Modified pilot selection for channel estimation of systematic polar coded MIMO-OFDM

open access: yesICT Express, 2019
This paper proposes a modified pilot selection for channel estimation of systematic polar coded MIMO-OFDM. Polar codes provably achieve the theoretical limit for communication systems and systematic polar codes generate the codeword that has the same ...
Koya Watanabe   +5 more
doaj   +1 more source

List Decoding of Arıkan’s PAC Codes

open access: yesEntropy, 2021
Polar coding gives rise to the first explicit family of codes that provably achieve capacity with efficient encoding and decoding for a wide range of channels. However, its performance at short blocklengths under standard successive cancellation decoding
Hanwen Yao   +2 more
doaj   +1 more source

Polarization coded aperture

open access: yesOptics Express, 2006
Two examples are presented to illustrate the advantages of polarization coded apertures, in which the incoming light will rotate its polarization at a portion of an aperture. In the first example the depth of field of a diffraction limited lens is increased without sacrificing the light throughput; in the second example the axial focal intensity of a ...
Wanli, Chi   +2 more
openaire   +2 more sources

Low Complexity List Decoding for Polar Codes with Multiple CRC Codes

open access: yesEntropy, 2017
Polar codes are the first family of error correcting codes that provably achieve the capacity of symmetric binary-input discrete memoryless channels with low complexity.
Jong-Hwan Kim   +3 more
doaj   +1 more source

Polar-Coded Transmission over 7.8-km Terrestrial Free-Space Optical Links

open access: yesPhotonics, 2023
Free-space optical (FSO) communications can offer high-capacity transmission owing to the properties of the laser beams. However, performance degradation caused by atmospheric turbulence is an urgent issue. Recently, the application of polar codes, which
Shingo Fujita   +8 more
doaj   +1 more source

On puncturing strategies for polar codes [PDF]

open access: yes2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017
This paper introduces a class of specific puncturing patterns, called symmetric puncturing patterns, which can be characterized and generated from the rows of the generator matrix $G_N$. They are first shown to be non-equivalent, then a low-complexity method to generate symmetric puncturing patterns is proposed, which performs a search tree algorithm ...
Ludovic Chandesris   +2 more
openaire   +3 more sources

Polar Research’s referees

open access: yes, 2010
It is once again time to thank all the scientists— not only those whose names are printed on the following pages—who have kindly served as referees for Polar Research during the last couple of ...
Goldman, Helle V.
core   +1 more source

Usage of polar codes for fixed and random length error bursts correction

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
Error correction during data storage, processing, and transmission allows for ensuring data integrity. Channel coding techniques are used to counteract these errors.
A. A. Ovchinnikov
doaj   +1 more source

Polar Codes for Multiple Descriptions [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
A polar coding scheme is proposed for the multiple description coding (MDC) problem and is shown to be able to achieve a certain rate pair on the dominant line of the achievable rate region determined by El Gamal and Cover. This scheme is an adaptation of the one developed by ŗasoglu et al. for the multiple access channel (MAC) to the MDC setting.
Qi Shi 0005   +4 more
openaire   +2 more sources

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

open access: yesFEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg   +14 more
wiley   +1 more source

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