Results 61 to 70 of about 2,916 (209)

Distributed GRS‐coded differential spatial modulation for half‐duplex cooperative network based on relay optimization and joint decoding

open access: yesIET Communications, Volume 18, Issue 20, Page 1795-1812, December 2024.
The article proposes the novel distributed generalized Reed‐Solomon coded differential spatial modulation (DGRSC‐DSM) scheme, where two selection algorithms are developed at the relay to optimize the final code with a better weight enumeration. Based on the specific structure of the GRS codes and the selection mode, the novel Smart‐joint decoding ...
Chen Chen, Fengfan Yang
wiley   +1 more source

Novel QO-STBC Scheme

open access: yesInternational Journal of Computer Applications, 2016
In order to satisfy the huge communications demands MIMO (Multiple input and Multiple Output) systems is one of the techniques which provide high data rates under the constraints of limited bandwidth and transmit power. Space-Time Block Coding (STBC) is based on MIMO transmission strategy which exploits transmit diversity.
D.P. Chechi, Mehak Mittal
openaire   +1 more source

Dimmable constant weight polar‐coded non‐orthogonal multiple access with orthogonal space‐time block coding visible light communication systems

open access: yesIET Communications, Volume 18, Issue 17, Page 1071-1078, October 2024.
The study integrates dimmable constant weight polar‐coded non‐orthogonal multiple access (CWPC‐NOMA) with orthogonal space‐time block coding (OSTBC) for visible light communication (VLC). The proposed scheme enhances spectral efficiency and reliability while optimizing resource utilization and leveraging transmit diversity.
Oluwaseyi Paul Babalola, Vipin Balyan
wiley   +1 more source

STBC Identification for Multi-User Uplink SC-FDMA Asynchronous Transmissions Exploiting Iterative Soft Information Feedback of Error Correcting Codes

open access: yesIEEE Access, 2022
With the advancement and widespread implementation of multiple-input multiple-output (MIMO) wireless communication systems over the last decade, space-time block coding (STBC) identification has become a critical task for intelligent radios.
Mohamed Marey, Hala Mostafa
doaj   +1 more source

Advanced channel coding schemes for B5G/6G networks: State‐of‐the‐art analysis, research challenges and future directions

open access: yesInternational Journal of Communication Systems, Volume 37, Issue 13, 10 September 2024.
This paper undertakes a review and analysis of advanced channel coding techniques with the aim of their scalability towards B5G/6G networks scenario. A comparative study is presented for channel coding candidates of futuristic networks. Concatenated and derived codes of convolutional, polar, LDPC, Rateless, and Space‐time coding schemes are reviewed ...
Abhilasha Gautam   +2 more
wiley   +1 more source

PAPR Reduction Performance by Active Constellation Extension for Diversity MIMO-OFDM Systems

open access: yesJournal of Electrical and Computer Engineering, 2010
The V-BLAST wireless communication architecture, space-time block code (STBC), and space-frequency block code (SFBC) techniques are strong candidates for achieving very high data rates in 4G broadband wireless communications.
Theodoros Tsiligkaridis   +1 more
doaj   +1 more source

Energy‐efficient physical layer security schemes for low Earth orbit satellite systems

open access: yesInternational Journal of Satellite Communications and Networking, Volume 42, Issue 5, Page 374-396, September/October 2024.
This paper presents four proposals to enhance physical layer security (PLS) in LEO satellite systems. The first utilizes the Alamouti code with artificial noise (AN) for secure downlink transmission. The second employs a reconfigurable intelligent surface (RIS) to introduce interference to eavesdroppers without additional power or receiver operations ...
Satya Chan   +4 more
wiley   +1 more source

The contribution of European citizen‐led energy initiatives to sustainable development goals

open access: yesSustainable Development, Volume 32, Issue 4, Page 3313-3328, August 2024.
Abstract Energy communities (ECs) are emerging as vital contributors to the United Nations' Sustainable Development Goals, despite being unnoticed. This article is the first to comprehensively discuss and quantify European citizen‐led energy initiatives' contributions to SDGs 7 (ensure access to affordable and clean energy), 9 (fostering industry ...
Valeria Jana Schwanitz   +2 more
wiley   +1 more source

Microgeographic variation in demography and thermal regimes stabilize regional abundance of a widespread freshwater fish

open access: yesEcological Applications, Volume 34, Issue 2, March 2024.
Abstract Predicting the persistence of species under climate change is an increasingly important objective in ecological research and management. However, biotic and abiotic heterogeneity can drive asynchrony in population responses at small spatial scales, complicating species‐level assessments.
Brian K. Gallagher, Dylan J. Fraser
wiley   +1 more source

Performance Improvement for Vehicular Communications Using Alamouti Scheme with High Mobility

open access: yesJournal of Telecommunications and Information Technology, 2020
The IEEE 802.11p standard is the basic protocol for wireless access in a vehicular environment (WAVE), providing high throughput for multimedia and high quality for vehicular transmissions.
My Abdelkader Youssef, Ahmed Mouhsen
doaj   +1 more source

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