Results 21 to 30 of about 211 (168)

Space-Time Turbo Trellis Coded Modulation for Wireless Data Communications

EURASIP Journal on Advances in Signal Processing, 2002
This paper presents the design of space-time turbo trellis coded modulation (ST turbo TCM) for improving the bandwidth efficiency and the reliability of future wireless data networks.
Welly Firmanto, Branka Vucetic, Jinhong Yuan, Zhuo Chen   +3 more
doaj   +1 more source

Bridging the Energy Balance Gap in Eddy‐Covariance Measurements: Insights From Standardized Network Data

Global Change Biology, Volume 32, Issue 5, May 2026.
Written Summary: Measuring energy exchanges between land and atmosphere is fundamental to understanding climate, but these measurements are systematically incomplete, with 20%–40% of energy consistently unaccounted for. Analyzing data from 84 sites worldwide, we show that carefully tracking all energy components and applying strict data quality filters
Giacomo Nicolini, David Durden, Luca Di Fiore, Christopher Florian, Simone Sabbatini, Bert Gielen, Arne Iserbyt, Benjamin Loubet, Ivan Mammarella, Adriana Mariotti, Maarten Op de Beeck, Caleb Slemmons, Carlo Trotta, Adam Young, Abad Chabbi, Iris Feigenwinter, Bernard Heinesch, Natalia Kowalska, Matthias Mauder, Ladislav Šigut, Michiel van der Molen, Flavio Bastos Campos, Daniel Berveiller, Christian Brümmer, Matthias Cuntz, Jean‐Christophe Domec, Benjamin Dumont, Silvano Fares, Damiano Gianelle, Rasmus Jensen, Carmen Kalalian, Natascha Kljun, Holger Lange, Jean‐Marc Limousin, Erik Lundin, Antonio Manco, Leonardo Montagnani, Eiko Nemitz, Matthias Peichl, Erkka Rinne, Marilyn Roland, Marius Schmidt, Guillaume Simioni, Abin Thomas, Caroline Vincke, Dario Papale   +45 more
wiley   +1 more source

M-PSK Cooperative Trellis Codes for Coordinate Interleaved Coded Cooperation

EURASIP Journal on Wireless Communications and Networking, 2009
M-PSK cooperative trellis codes are proposed for two-user coordinate interleaved coded cooperation operating over quasistatic Rayleigh fading channels.
Özgür Oruç, Ümit Aygölü   +1 more
doaj   +2 more sources

Performance of Antenna Diversity with Turbo Trellis Coded Modulation Over Nakagami Channels

Electrica, 2019
In this paper, we will use the Space Time Block codes for antenna diversity, and the performance of Space-Time – Turbo Trellis Coded Modulation (ST-TTCM) is investigated over Nakagami channels.
Onur OSMAN
doaj   +2 more sources

Advancing Dry Electroencephalography With Scalable, Soft, and Transcranial Magnetic Stimulation‐Compatible Ti3C2Tx MXene Electrodes for Research and Clinical‐Grade Applications

Advanced Science, Volume 13, Issue 21, 13 April 2026.
Dry soft Ti3C2Tx MXene electroencephalography (EEG) electrodes provide low impedance (2.1 ± 1.8 kΩ at 10 Hz), long‐term stability, and enable safe simultaneous EEG and transcranial magnetic stimulation (TMS). Across scalp sites, hair types, and recording paradigms, including steady state visual evoked potentials (SSVEP), clinical EEG, and mobile EEG ...
Sneha Shankar, Jakob Michiels, Ksenija Tasich, Ashley Koluda, Ryan Rich, Brian Erickson, Eugenia Angelopoulos, Francesca Cimino, Daryl Hurwitz, Raghav Garg, Spencer R. Averbeck, Doris Xu, Mariam Josyula, Nina Petillo, James J. Gugger, Kathryn A. Davis, John Medaglia, Flavia Vitale   +17 more
wiley   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Modified SNR Gap Approximation for Resource Allocation in LDPC-Coded Multicarrier Systems

IEEE Access, 2020
The signal-to-noise ratio (SNR) gap approximation provides a closed-form expression for the SNR required for a coded modulation system to achieve a given target error performance for a given constellation size. This approximation has been widely used for
Adriaan Suls, Jeroen Verdyck, Marc Moonen, Marc Moeneclaey   +3 more
doaj   +1 more source

Hybrid VLC–IR Communication System With Beam‐Steered Uplink and Turbo Coding Under Mobility

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
This paper presents a hybrid VLC–IR communication system integrating a beam‐steered infrared uplink with Turbo coding for reliable indoor optical wireless links. The proposed architecture achieves BER below 10−3 at 10 dB SNR and maintains stable coverage under NLOS conditions through adaptive beam steering.
Saeed Ahmed Ansari
wiley   +1 more source

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

EURASIP 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, Zixiang Xiong, Nouman Raja   +2 more
doaj   +2 more sources

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

IEEE 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, Wei Zhang, Feng Tian, Jianyang Shi, Kaihui Wang, Miao Kong, Junwen Zhang, Kai Lv, Deng'ao Li, Xiaolong Pan, Xiangjun Xin   +10 more
doaj   +1 more source