Results 11 to 20 of about 81,662 (253)

The International Code for Ships Operating in Polar Waters: Finalization, Adoption and Law of the Sea Implications

open access: yesArctic Review on Law and Politics, 2016
The most recent instrument specifically designed to make navigation in polar waters safer and more environmentally friendly is the International Maritime Organization's long-awaited “International Code for Ships Operating in Polar Waters” – the Polar ...
Øystein Jensen
doaj   +3 more sources

A Novel Embedded Side Information Transmission Scheme Based on Polar Code for Peak-to-Average Power Ratio Reduction in Underwater Acoustic OFDM Communication System [PDF]

open access: yesSensors
In this paper, we proposed an embedded side information (SI) transmission scheme based on polar code construction for PAPR reduction using the PTS scheme in the underwater Acoustic (UWA) Orthogonal Frequency Division Multiplexing (OFDM) communication ...
Siyu Xing   +3 more
doaj   +2 more sources

Does Gaussian Approximation Work Well for the Long-Length Polar Code Construction?

open access: yesIEEE Access, 2017
Gaussian approximation (GA) is widely used to construct polar codes. However, when the code length is long, the subchannel selection inaccuracy due to the calculation error of conventional approximate GA (AGA), which uses a two-segment approximation ...
Jincheng Dai   +4 more
doaj   +3 more sources

Compound polar codes

open access: yes2013 Information Theory and Applications Workshop (ITA), 2013
A capacity-achieving scheme based on polar codes is proposed for reliable communication over multi-channels which can be directly applied to bit-interleaved coded modulation schemes. We start by reviewing the ground-breaking work of polar codes and then discuss our proposed scheme.
Mahdavifar, Hessam   +3 more
openaire   +2 more sources

A Modified Approach to Punctured Product Polar Codes

open access: yesJournal of Telecommunications and Information Technology, 2019
A high-performance polar code introduced as a product polar code can be constructed by concatenating two short length polar codes. The punctured structure of this code was achieved by puncturing one of its constituent codes.
Mohammad Abu Hanif, Sina Vafi
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

An efficient construction of polar codes based on the general partial order

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
Traditionally, the construction of polar codes requires intense computations to sort all bit channels. In previous works, two types of partial orders (POs) of polar codes were proposed to decrease the computations in the construction process.
Wei Wang, Liping Li, Kai Niu
doaj   +1 more source

Transmission of control information in 5G broadband telecommunication systems

open access: yesAdaptivni Sistemi Avtomatičnogo Upravlinnâ, 2021
This article discusses the polar code is applied to the transmission of control information in broadband telecommunications systems. Channel coding contains a set of procedures for error detection, error correction, rate matching, bit interleaving and ...
Ю. Бойко   +3 more
doaj   +1 more source

Universal polar codes

open access: yes2014 IEEE International Symposium on Information Theory, 2014
Polar codes, invented by Arikan in 2009, are known to achieve the capacity of any binary-input memoryless output-symmetric channel. One of the few drawbacks of the original polar code construction is that it is not universal. This means that the code has to be tailored to the channel if we want to transmit close to capacity. We present two "polar-like"
Hassani, S. Hamed, Urbanke, Rudiger
openaire   +2 more sources

A Nearly Optimal Method of Polar Code Constructions for the AWGN Channel

open access: yesIEEE Access, 2021
Polar code is a kind of capacity-approaching code with explicit structure as part of the next generation wireless communication standard. The performance of the polar code is directly determined by the construction method, in which there are three ...
Haichao Sun   +3 more
doaj   +1 more source

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