Results 81 to 90 of about 14,247 (230)

Near-Capacity Turbo Coded Soft-decision Aided DAPSK/Star-QAM for Amplify-and-Forward based Cooperative Communications [PDF]

open access: yes, 2013
Multilevel Differential Amplitude and Phase-Shift Keying (DAPSK) schemes do not require any channel estimation, which results in low complexity.
Liang, Dandan   +2 more
core  

The MICOS Complex Regulates Mitochondrial Structure and Oxidative Stress During Age‐Dependent Structural Deficits in the Kidney

open access: yesAging Cell, Volume 25, Issue 5, May 2026.
During kidney aging, loss of the MICOS complex drives cristae disorganization, impairs oxidative capacity, and alters mitochondrial dynamics. MICOS disruption elevates mitochondrial ROS and disrupts calcium homeostasis, linking mitochondrial structural remodeling to metabolic dysfunction in aging kidney tissue.
Prasanna Katti   +48 more
wiley   +1 more source

A Low-Rate Multi-Level Voice/Video Transceiver for Personal Communications [PDF]

open access: yes, 1995
A personal communication system (PCS) transceiver is proposed and investigated. A 4.8 kbit/s transformed binary pulse excited (TBPE) linear predictive speech codec, embedded source sensitivity-matched binary Bose-Chaudhuri-Hocquenghem (BCH) block error ...
Streit, J   +3 more
core  

Resonant Tunneling Diode‐Integrated Terahertz Transceiver Module for Wireless Communications

open access: yesAdvanced Photonics Research, Volume 7, Issue 4, April 2026.
Resonant tunneling diode‐enabled terahertz transceiver module. Terahertz bands are essential for next‐generation wireless communications, offering ultrabroad bandwidth and unprecedented data throughput. However, realizing compact, low‐cost, broadband, and efficient terahertz transceiver modules remains challenging.
Weijie Gao   +12 more
wiley   +1 more source

Low correlation sequences over AM-PSK and QAM alphabets [PDF]

open access: yes, 2007
A construction for a family of sequences over the 8-ary AM-PSK constellation that has maximum nontrivial correlation magnitude bounded as theta(max) less than or similar to root N is presented here.
Kumar9, P Vijay, Anand, M
core  

Оптимізація демодулятора QAM сигналів [PDF]

open access: yes, 2014
Introduction. The processes of signal processing in the quadrature demodulator and the problem of clock synchronization and reference oscillations of quadrature basis providing are considered for a relatively high speed modulation conditions.
Захарченко, О. С.   +4 more
core   +2 more sources

Hierarchical Modulation Classification with Channel-Type-Guided Blind Preprocessing for High-Order QAM in Multipath Fading Channels

open access: yesApplied Sciences
Automatic modulation classification (AMC) becomes challenging in multipath fading channels, particularly for high-order quadrature amplitude modulation (QAM) signals whose constellation points are strongly distorted by inter-symbol interference, phase ...
Sungsoo Park, Gyuyeol Kong
doaj   +1 more source

Low-Complexity Detection of High-Order QAM Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2017
Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal transmission technique to considerably improve the spectral efficiency. This paper presents the first attempt in the literature to estimate the transmit data symbols of any high-order ...
Ebrahim Bedeer   +2 more
doaj   +1 more source

Spatial multi‐omics identifies a NOTCH3‐mediated capillary–mCAF crosstalk driving immune exclusion in hepatocellular carcinoma

open access: yesiMeta, Volume 5, Issue 2, April 2026.
Spatial multi‐omics defines a DLL4–NOTCH3–driven capillary–mCAF axis orchestrating fibrotic remodeling and immune exclusion in hepatocellular carcinoma tumor cores, conferring immune checkpoint blockade resistance. Targeting stromal NOTCH3 disrupts this pro‐fibrotic niche, enhances T cell infiltration, and synergizes with anti‐PD‐1 therapy ...
Fansen Ji   +18 more
wiley   +1 more source

Analysis of Frequency Conversion for M-QAM and M-PSK Modems [PDF]

open access: yes, 1995
this paper is greatly simplified compared to the method adopted in this thesis. Standard error rate expressions for M--QAM and M--PSK as given in Proakis [8] are used.
For M--qam   +3 more
core  

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