Results 41 to 50 of about 6,477 (204)

Caenogastropods and heterobranch gastropods from the Hettangian deposits of Luxembourg: palaeobiogeography and Early Jurassic faunal recovery in the western Tethys

open access: yesPapers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract We describe the Hettangian Caenogastropoda and Heterobranchia of the Luxembourg Sandstone Formation, a wedge of clastic sediments deposited along the eastern margin of Paris Basin during the Early Jurassic. Five new genera and 11 new species are erected: Bourguetia bipartita sp. nov., Globularia delsatei sp. nov., Oonia feidtorum sp.
Stefano Monari   +3 more
wiley   +1 more source

Turbo per tone equalization for ADSL systems

open access: yes2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
Summary: We study the equalization procedure in discrete multitone (DMT)-based systems, in particular, in DMT-based ADSL systems. Traditionally, equalization is performed in the time domain by means of a channel shortening filter. Shifting the equalization operations to the frequency domain, as is done in per-tone equalization, increases the achieved ...
Vanhaute Hilde, Moonen Marc
openaire   +3 more sources

Thermohydrodynamic Modeling of Two Axial Groove Journal Bearings Under Different Lubrication Conditions

open access: yesInternational Journal of Rotating Machinery, Volume 2026, Issue 1, 2026.
Cylindrical hydrodynamic bearings are essential components of rotating machines used in applications ranging from small motors to large turbo generators. They operate based on the principle of a thin oil film that separates the rotating shaft from the bearing, preventing mechanical contact between the surfaces.
Ely Q. Gomes   +5 more
wiley   +1 more source

Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals

open access: yesTongxin xuebao, 2015
To solve the issues of the poor performance and convergence difficulties in the blind equalization of high order continuous phase modulation (CPM) signals, a new EM-SOVA channel blind equalization method was developed from the perspective of hidden ...
Kai ZHONG, Hua PENG, Lin-dong GE
doaj   +2 more sources

Self-Iterating Soft Equalizer

open access: yes, 2013
A self-iterating soft equalizer (SISE) consisting of a few relatively weak constituent equalizers is shown to provide robust performance even in severe intersymbol interference (ISI) channels that exhibit deep nulls and valleys within the signal band ...
Jeong, Seongwook, Moon, Jaekyun
core   +1 more source

PAPR Constrained Power Allocation for Iterative Frequency Domain Multiuser SIMO Detector [PDF]

open access: yes, 2014
Peak to average power ratio (PAPR) constrained power allocation in single carrier multiuser (MU) single-input multiple-output (SIMO) systems with iterative frequency domain (FD) soft cancelation (SC) minimum mean squared error (MMSE) equalization is ...
Karjalainen, Juha   +3 more
core   +2 more sources

Pilot‐Based Iterative Path Estimation and Maximum Ratio Combining (MRC)–Based Signal Detection of Orthogonal Time–Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels

open access: yesJournal of Computer Networks and Communications, Volume 2026, Issue 1, 2026.
The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time–frequency space (OTFS) modulation has emerged as a promising technique to ...
Ephrem Gelamite Demere   +2 more
wiley   +1 more source

Optimizing of Iterative Turbo Equalizer for Underwater Sensor Communication

open access: yesInternational Journal of Distributed Sensor Networks, 2013
We presented an iterative turbo equalization to cope with intersymbol interference induced by reflection of sea level and sea bottom for underwater sensor communication channel. Iterative turbo equalizer consists of inner codes and outer codes; we employ
Ji Won Jung, Ki Man Kim
doaj   +1 more source

Weighted Multi-Band Turbo-Coded FSK for Reliable Underwater Communications

open access: yesApplied Sciences, 2022
Multi-band communication technology allocates the same data to different frequency bands, improving both performance and propagation efficiency. However, since the performance loss in a particular band affects the entire band, the multi-band structure ...
Hyun-Woo Jeong, Ji-Won Jung
doaj   +1 more source

Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective

open access: yesJournal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib   +2 more
wiley   +1 more source

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