Results 31 to 40 of about 211 (167)

Combined Source-Channel Coding of Images under Power and Bandwidth Constraints

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper proposes a framework for combined source-channel coding for a power and bandwidth constrained noisy channel. The framework is applied to progressive image transmission using constant envelope M-ary phase shift key (M-PSK) signaling over an ...
Marc Fossorier   +2 more
doaj   +2 more sources

LDPC-Coded Generalized Frequency Division Multiplexing for Intensity-Modulated Direct-Detection Optical Systems

open access: yesIEEE Photonics Journal, 2019
In this paper, a low-density parity check (LDPC) coded GFDM with high-level modulation scheme is proposed for more flexible and advanced multicarrier modulation in intensity-modulated/direct-detection (IM/DD) optical systems.
Dong Guo   +10 more
doaj   +1 more source

Trellis-coded multidimensional phase modulation

open access: yesIEEE Transactions on Information Theory, 1990
A 2L-dimensional multiple phase-shift keyed (L*MPSK) signal set is obtained by forming the Cartesian product of L two-dimensional MPSK signal sets. A systematic approach to partitioning L*MPSK signal sets that is based on block coding is used. An encoder system approach is developed.
Steven S. Pietrobon   +4 more
openaire   +3 more sources

The genetic basis of microbiome recruitment in grapevine and its association with fermentative and pathogenic taxa

open access: yesNew Phytologist, Volume 248, Issue 1, Page 178-192, October 2025.
Summary While grapevine is an exceptional perennial model for studying host‐microbiome interactions, the host genome's role in microbiome assembly is often masked by environmental factors. This research provides a first insight into the genetic mechanisms shaping berry‐associated microbial communities.
Lena Flörl   +7 more
wiley   +1 more source

Spectral Efficiency Improved 2D-PAM8 Trellis Coded Modulation for Short Reach Optical System

open access: yesIEEE Photonics Journal, 2017
This paper proposes and demonstrates a 31.25 Gbps two-dimensional eight level pulse amplitude modulation with trellis coded modulation (2D-PAM8-TCM) transmission in intensity modulation and direct detection based short reach system. In this system,
Yan Fu   +5 more
doaj   +1 more source

Two‐Way Relaying for Orbital Angular Momentum LOS Transmission

open access: yesInternational Journal of Communication Systems, Volume 38, Issue 13, 10 September 2025.
This paper investigates two‐way relaying (TWR) for orbital angular momentum (OAM)‐based line‐of‐sight (LOS) transmission. Low‐complexity near‐ML detectors are proposed for OAM mode division multiplexing and index modulation. Theoretical analysis and simulations confirm that TWR significantly improves bit error performance and spectral efficiency over ...
Oluwabukunmi Williams Oso   +2 more
wiley   +1 more source

Molecular breeding of tomato: Advances and challenges

open access: yesJournal of Integrative Plant Biology, Volume 67, Issue 3, Page 669-721, March 2025.
This review explores the evolution of tomato (Solanum lycopersicum) from its Andean origins to a globally cultivated crop, highlighting advancements in molecular breeding. It covers genome sequencing, functional gene identification, and CRISPR/Cas9 applications, addressing challenges in flavor, yield, and other important agrinomic traits, while ...
Minmin Du   +11 more
wiley   +1 more source

CG-SCMA Codebook Design Based on Maximized Euclidian Distance

open access: yesJournal of Telecommunications and Information Technology, 2023
Sparse code multiple access (SCMA) is a multi-dimensional codebook based on a class of non-orthogonal multiple access (NOMA) technologies enabling the delivery of non-orthogonal resource elements to numerous users in 5G wireless communications without ...
Sura S. Mohamed, Hikmat N. Abdullah
doaj   +1 more source

Super-orthogonal trellis-coded spatial modulation

open access: yesIET Communications, 2012
Spatial modulation (SM), which employs the indices of multiple transmit antennas to transmit information in addition to the conventional M-ary signal constellations, is a novel transmission technique that has been proposed for multiple-input multiple-output systems.
Basar, Ertugrul   +4 more
openaire   +3 more sources

A path splitting and pruning strategy on list decoder for PAC codes

open access: yesIET Communications, Volume 18, Issue 18, Page 1292-1299, November 2024.
The paper introduces a novel low‐complexity list decoding algorithm for polarization‐adjusted convolutional codes. By incorporating path splitting and pruning strategies based on highly reliable information bits, our algorithm significantly reduces decoding complexity while maintaining optimal performance.
Lei Lan, Zhongpeng Wang, Lijuan Zhang
wiley   +1 more source

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