Results 21 to 30 of about 214 (167)
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 +45 more
wiley +1 more source
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 +17 more
wiley +1 more source
Trellis-coded multidimensional phase modulation
IEEE 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
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 +2 more
doaj +2 more sources
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 +3 more
doaj +1 more source
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 +9 more
wiley +1 more source
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 +10 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
Spectral Efficiency Improved 2D-PAM8 Trellis Coded Modulation for Short Reach Optical System
IEEE 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
IET Quantum Communication, Volume 7, Issue 1, January/December 2026.Entanglement‐based quantum communication schemes, such as quantum teleportation, rely on classical communication links, which introduce significant transmission overhead and limit the achievable quantum advantage. To address this issue, this work investigates a non‐entanglement‐based‐quantum communication concept.
Kushtrim Dini, Peter Jung
wiley +1 more source