Results 31 to 40 of about 36,826 (198)

Polar Coding for Processes With Memory [PDF]

open access: yesIEEE Transactions on Information Theory, 2016
We study polar coding for stochastic processes with memory. For example, a process may be defined by the joint distribution of the input and output of a channel. The memory may be present in the channel, the input, or both. We show that $ψ$-mixing processes polarize under the standard Arıkan transform, under a mild condition.
Eren Sasoglu, Ido Tal
openaire   +2 more sources

Bidirectional stack decoding of polar codes [PDF]

open access: yesVojnotehnički Glasnik, 2021
Introduction/purpose: The paper introduces a reduced latency stack decoding algorithm of polar codes, inspired by the bidirectional stack decoding of convolutional codes and based on the folding technique.
Aleksandar Đ. Minja   +2 more
doaj   +1 more source

A novel method for encoding and decoding based on enhanced parity-check-concatenated polar codes

open access: yesDianxin kexue, 2021
Polar codes have perfect coding and decoding performance as a kind of error correction code, which have become a standard coding scheme for 5G short code control channel. While the length of polar codes is short, its performance is not good enough.
Yan WANG   +3 more
doaj   +2 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.
Hessam Mahdavifar   +3 more
openaire   +2 more sources

Polar-Coded Modulation

open access: yesIEEE Transactions on Communications, 2013
A framework is proposed that allows for a joint description and optimization of both binary polar coding and $2^m$-ary digital pulse-amplitude modulation (PAM) schemes such as multilevel coding (MLC) and bit-interleaved coded modulation (BICM). The conceptual equivalence of polar coding and multilevel coding is pointed out in detail.
Mathis Seidl   +3 more
openaire   +2 more sources

Systematic Polar Coding [PDF]

open access: yesIEEE Communications Letters, 2011
Polar codes were originally introduced as a class of non-systematic linear block codes. This paper gives encoding and decoding methods for systematic polar coding that preserve the low-complexity nature of non-systematic polar coding while guaranteeing the same frame error rate.
openaire   +4 more sources

Relaxed Polar Codes [PDF]

open access: yesIEEE Transactions on Information Theory, 2017
Conference version,Relaxed Channel Polarization for Reduced Complexity Polar Coding, accepted for presentation at IEEE Wireless Communications and Networking Conference WCNC ...
Mostafa El-Khamy   +4 more
openaire   +2 more sources

High Performance Short Polar Codes: A Concatenation Scheme Using Spinal Codes as the Outer Code

open access: yesIEEE Access, 2018
An innovative scheme for concatenating the polar codes with the recently proposed spinal codes is presented in this paper. The primary objective is to improve the performance of the polar codes in the finite-length regime.
Xiao Xu   +4 more
doaj   +1 more source

On the Origin of Polar Coding [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2016
Polar coding was conceived originally as a technique for boosting the cutoff rate of sequential decoding, along the lines of earlier schemes of Pinsker and Massey. The key idea in boosting the cutoff rate is to take a vector channel (either given or artificially built), split it into multiple correlated subchannels, and employ a separate sequential ...
openaire   +4 more sources

Efficient Implementation of Density Evolution for Punctured Polar Codes

open access: yesIEEE Access, 2019
Polar codes asymptotically achieve the symmetric capacity of arbitrary binary-input discrete memoryless channels under low-complexity sequential decoding algorithms such as successive cancellation decoding.
Christopher Schnelling   +4 more
doaj   +1 more source

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