Results 11 to 20 of about 24,419 (276)

A Practical Guide and Assessment on Using ChatGPT to Conduct Grounded Theory: Tutorial [PDF]

open access: yesJournal of Medical Internet Research
Generative large language models (LLMs), such as ChatGPT, have significant potential for qualitative data analysis. This paper aims to provide an early insight into how LLMs can enhance the efficiency of text coding and qualitative analysis ...
Yongjie Yue   +4 more
doaj   +2 more sources

An Efficient Application of Turbo Coding for OFDM In-Phase/Quadrature Index Modulation

open access: yesIEEE Access, 2023
We present a method to efficiently apply turbo coding to OFDM in-phase/quadrature index modulation (OFDM-IQ-IM) for both cases of presence and absence of puncturing.
Eunchul Yoon, Soonbum Kwon, Sun Yong Kim
doaj   +3 more sources

Separate Turbo Code and Single Turbo Code Adaptive OFDM Transmissions

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
This paper discusses the application of adaptive modulation and adaptive rate turbo coding to orthogonal frequency-division multiplexing (OFDM), to increase throughput on the time and frequency selective channel.
Lei Ye, Alister Burr
doaj   +3 more sources

Coding theorems for turbo code ensembles [PDF]

open access: yesIEEE Transactions on Information Theory, 2002
Summary: This paper is devoted to a Shannon-theoretic study of turbo codes. We prove that ensembles of parallel and serial turbo codes are good in the following sense. For a turbo code ensemble defined by a fixed set of component codes (subject only to mild necessary restrictions), there exists a positive number \(\gamma_0\) such that for any binary ...
R J Mceliece
exaly   +3 more sources

An Efficient Turbo Decoding and Frequency Domain Turbo Equalization for LTE Based Narrowband Internet of Things (NB-IoT) Systems

open access: yesSensors, 2021
This paper addresses the main crucial aspects of physical (PHY) layer channel coding in uplink NB-IoT systems. In uplink NB-IoT systems, various channel coding algorithms are deployed due to the nature of the adopted Long-Term Evolution (LTE) channel ...
Mohammed Jajere Adamu   +5 more
doaj   +1 more source

Turbo Equalization With Irregular Turbo Codes [PDF]

open access: yes2007 4th International Symposium on Wireless Communication Systems, 2007
We analyze a turbo equalization system that combines maximum a posteriori probability (MAP) equalization with irregular turbo codes. Our goal is to approach the information capacity limit for severe inter-symbol interference (ISI) channels. To this end, we optimize the degree profile of irregular turbo codes by maximizing the minimum distance between ...
Vladimir D. Trajkovic   +2 more
openaire   +1 more source

Research and Implementation of Turbo Coding Technology in High-Speed Underwater Acoustic OFDM Communication

open access: yesJournal of Robotics, 2022
It is demonstrated that the fully parallel turbo decoding algorithm can achieve an approximate error correction decoding performance when 36 iterations are used and when the log-map algorithm with 6 iterations is used.
Yarang Yang, Yunpeng Li
doaj   +1 more source

Quantum Serial Turbo Codes [PDF]

open access: yesIEEE Transactions on Information Theory, 2008
We present a theory of quantum serial turbo-codes, describe their iterative decoding algorithm, and study their performances numerically on a depolarization channel. Our construction offers several advantages over quantum LDPC codes. First, the Tanner graph used for decoding is free of 4-cycles that deteriorate the performances of iterative decoding ...
Poulin, David   +2 more
openaire   +4 more sources

Turbo Coding, Turbo Equalisation and Space–Time Coding [PDF]

open access: yes, 2011
Against the backdrop of the emerging 3G wireless personal communications standards and broadband access network standard proposals, this volume covers a range of coding and transmission aspects for transmission over fading wireless channels. It presents the most important classic channel coding issues and also the exciting advances of the last decade ...
L. Hanzo   +4 more
  +4 more sources

Recurrent neural network based turbo decoding algorithms for different code rates

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Application of deep learning to error control coding is gaining special attention and neural network architectures on decoding are approached to compare with conventional ones. Turbo codes conventionally use BCJR algorithm for decoding.
Shridhar B. Devamane   +1 more
doaj   +1 more source

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