Results 11 to 20 of about 82,566 (244)

Channel Estimation With Systematic Polar Codes [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2018
Study of polar codes in fading channels is of great importance when applying polar codes in wireless communications. Channel estimation is a fundamental step for communication to be possible in fading channels. For both systematic and non-systematic polar codes, construction of them is based on an information set and the known frozen bits.
Liping Li, Zuzheng Xu, Yanjun Hu
openaire   +2 more sources

Design and analysis of polar coded cooperation with incremental redundancy for IoT in fading channels

open access: yesIET Communications, 2021
In this study, a coded cooperation scheme using polar codes is explored for high‐reliability and low‐user complexity applications such as Internet of Things.
Hao Liang   +4 more
doaj   +1 more source

Adaptive Probabilistic Shaping Using Polar Codes for FSO Communication

open access: yesIEEE Photonics Journal, 2022
An adaptive polar coded probabilistic shaping scheme for free-space optical (FSO) communication is proposed and demonstrated to improve transmission performance.
Xiaoyu Liu   +4 more
doaj   +1 more source

Staircase codes with non-systematic polar codes

open access: yes, 2021
In this work we propose an encoding and decoding framework for staircase codes based on non-systematic polar codes as component codes. The staircase structure allows for efficient parallelized decoding, while the polar component codes allow to benefit from the flexible structure and efficient soft-decision decoding algorithms.
Condo, Carlo   +3 more
openaire   +2 more sources

Systematic Encoding and Shortening of PAC Codes

open access: yesEntropy, 2020
Polarization adjusted convolutional (PAC) codes are a class of codes that combine channel polarization with convolutional coding. PAC codes are of interest for their high performance.
Erdal Arıkan
doaj   +1 more source

Adding a Rate‐1 Third Dimension to Parallel Concatenated Systematic Polar Code: 3D Polar Code [PDF]

open access: yesWireless Communications and Mobile Computing, 2018
In this paper, a three‐dimensional polar code (3D‐PC) scheme is proposed to improve the error floor performance of parallel concatenated systematic polar code (PCSPC). The proposed 3D‐PC is constructed by serially concatenating the PCSPC with a rate‐1 third dimension, where only a fraction λ of parity bits of PCSPC are extracted to participate in the ...
Zhenzhen Liu   +3 more
openaire   +1 more source

Patterns of care for people presenting to Australian general practice with musculoskeletal complaints based on routinely collected data: protocol for an observational cohort study using the Population Level Analysis and Reporting (POLAR) database

open access: yesBMJ Open, 2021
Introduction General practice is integral to the Australian healthcare system. Outcome Health’s POpulation Level Analysis and Reporting (POLAR) database uses de-identified electronic health records to analyse general practice data in Australia.
Alexandra Gorelik   +2 more
doaj   +1 more source

Formulation, Validation, and Application of a Novel 3D BEM Tool for Vertical Axis Wind Turbines of General Shape and Size

open access: yesApplied Sciences, 2021
Low order models based on the Blade Element Momentum (BEM) theory exhibit modeling issues in the performance prediction of Vertical Axis Wind Turbines (VAWT) compared to Computational Fluid Dynamics, despite the widespread engineering practice of such ...
Andrea G. Sanvito   +2 more
doaj   +1 more source

Limitations and Biases in the Retrieval of the Polar Magnetic Field. I. The Role of the Magnetic Filling Factor in Milne–Eddington Inversions of Simulated Hinode/SP Data

open access: yesThe Astrophysical Journal, 2023
We study the extent to which Milne–Eddington inversions are able to retrieve and characterize the magnetic landscape of the solar poles from observations by the spectropolarimeter on board Hinode.
Rebecca Centeno   +4 more
doaj   +1 more source

Achieving the Uniform Rate Region of General Multiple Access Channels by Polar Coding [PDF]

open access: yes, 2016
We consider the problem of polar coding for transmission over $m$-user multiple access channels. In the proposed scheme, all users encode their messages using a polar encoder, while a multi-user successive cancellation decoder is deployed at the receiver.
El-Khamy, Mostafa   +3 more
core   +1 more source

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