Results 41 to 50 of about 87,888 (259)

A RM-Polar Codes

open access: yesCoRR, 2014
In this letter we propose a new hybrid code called "RM-Polar" codes. This new codes are constructed by combining the construction of Reed-Muller (RM) code and Polar code. It has much larger minimum Hamming distance than Polar codes, therefore it has much better error performance than Polar codes.
Bin Li 0013, Hui Shen 0006, David Tse
openaire   +2 more sources

Polar Codes for Broadcast Channels [PDF]

open access: yesIEEE Transactions on Information Theory, 2013
Polar codes are introduced for discrete memoryless broadcast channels. For $m$-user deterministic broadcast channels, polarization is applied to map uniformly random message bits from $m$ independent messages to one codeword while satisfying broadcast constraints.
Goela, Naveen   +2 more
openaire   +3 more sources

Design of concatenated Hash-Polar code based on segmented CRC code

open access: yesDianxin kexue, 2022
As a linear block code, the polarization code has a lower coding complexity and a definite structure, but when it has a short or medium code length, the performance will be reduced.A design method of concatenated HashPolar codes based on segmented cyclic
Zhengjie LI, Shunlan LIU, Xu ZHANG
doaj   +2 more sources

A method for shorting of the system Polar code based on bit-reverse permutation

open access: yesDianxin kexue, 2019
Polar code,as a channel coding scheme in 3GPP standard,has good error correction performance.In order to further improve performance of the BER of the punctured Polar code,the shortening algorithm based on bit-reverse permuation was applied to the system
Shunlan LIU, Haibo BIAN, Aiming HU
doaj   +2 more sources

Performance Evaluation of High-Speed Polar Coded CO-OFDM System with Nonlinear and Linear Impairments

open access: yesIEEE Photonics Journal, 2017
In this paper, the performance of polar code in high-speed coherent optical orthogonal frequency division multiplexing (CO-OFDM) system with nonlinear and linear impairments is comprehensively investigated for the first time.
Ling Liu   +5 more
doaj   +1 more source

Simplified polar code decoding algorithm

open access: yesDianzi Jishu Yingyong, 2018
Polar code is an error correction coding technique, which can prove from the mathematical point of view to reach Shannon′s limit. However, the traditional decoding algorithm, such as the successive cancellation(SC) and the successive cancellation list ...
Wang Dan   +3 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

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

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +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

Home - About - Disclaimer - Privacy