Results 71 to 80 of about 76,661 (236)

Three‐Dimensional Heterogeneous Bonding for High‐Density and Low‐Noise TMR Sensing Arrays

open access: yesAdvanced Science, Volume 13, Issue 13, 3 March 2026.
This study demonstrates a three‐dimensional heterogeneous bonding approach to fabricate compact TMR sensing units with double junction numbers and improved magnetic performance. Optimized Au─Au bonding and angled etching improve device integrity, noise characteristics, and magnetoresistance.
Zi'ang Han   +3 more
wiley   +1 more source

Study and Performance of Digital Modulation Techniques

open access: yesInternational Journal of Computing and Related Technologies, 2022
The Fastest growing world has required fastest communication. The advancement in the technology brings the revolution in the world by introducing 1G to 6G in wireless technology.
Asad Ali, Rabia Ansari
doaj  

A Simple Joint Modulation Format Identification and OSNR Monitoring Scheme for IMDD OOFDM Transceivers Using K-Nearest Neighbor Algorithm

open access: yesApplied Sciences, 2019
In this study, a joint modulation format identification and optical signal-to-noise ratio (OSNR) monitoring algorithm is proposed and experimentally demonstrated using the k-nearest neighbor algorithm for intensity modulation and direct detection (IMDD ...
Qianwu Zhang   +8 more
doaj   +1 more source

Large Zero Autocorrelation Zone of Golay Sequences and $4^q$-QAM Golay Complementary Sequences [PDF]

open access: yes, 2011
Sequences with good correlation properties have been widely adopted in modern communications, radar and sonar applications. In this paper, we present our new findings on some constructions of single $H$-ary Golay sequence and $4^q$-QAM Golay ...
Gong, Guang, Huo, Fei, Yang, Yang
core   +1 more source

Multiple Beamforming with Perfect Coding

open access: yes, 2012
Perfect Space-Time Block Codes (PSTBCs) achieve full diversity, full rate, nonvanishing constant minimum determinant, uniform average transmitted energy per antenna, and good shaping. However, the high decoding complexity is a critical issue for practice.
Ayanoglu, Ender, Li, Boyu
core   +1 more source

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

open access: yesAdvanced Functional Materials, Volume 36, Issue 12, 9 February 2026.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To   +5 more
wiley   +1 more source

Notes on analogue and digital amplitude modulation [PDF]

open access: yes, 2009
Notes on AM, DSBSC, QAM, BPSK, 4QAM, 8PSK ...
Maunder, Rob
core  

Quasi‐Bound States in the Continuum on the Bloch‐Surface‐Wave Platform for Sensing With Simultaneous High Q‐Factor and High Sensitivity

open access: yesAdvanced Optical Materials, Volume 14, Issue 8, 23 February 2026.
Quasi‐bound states in the continuum on the Bloch surface wave platform are demonstrated, exhibiting high Q‐factors due to strongly suppressed radiative losses and high sensitivity arising from the large evanescent field inherent to the surface wave. The resonance shows clear shifts after each surface molecular functionalization step, highlighting its ...
Bo‐Wei Lin   +6 more
wiley   +1 more source

Algorithm Design for Assignment Frequency Channels for Services in CATV Network

open access: yesAdvances in Electrical and Electronic Engineering, 2008
This article describes algorithm design for assignment frequency channels for services in CATV network. QAM modulated channels in designed system are dynamically switched and frequency adapted.
Jan Hlubik
doaj  

Blind Phase Recovery For Qam Constellations

open access: yes, 2004
Publication in the conference proceedings of EUSIPCO, Viena, Austria ...
CAMPISI P   +3 more
openaire   +3 more sources

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