Results 11 to 20 of about 328,523 (223)

Ringed Seal (Pusa hispida) Haul-Out Behavior and Emergence Timing in the Bering, Chukchi, and Beaufort Seas. [PDF]

open access: yesEcol Evol
In the spring, ringed seals (Pusa hispida) shift from predominantly hauling out in lairs to predominantly hauling out on the surface of the sea ice to bask and molt, a transition we refer to as “emergence.” We used hidden Markov models (HMMs) to analyze haul‐out timelines from satellite‐linked transmitters to estimate emergence dates of ringed seals ...
Lindsay JM   +6 more
europepmc   +2 more sources

Distributed Temporal Coding of Visual Memory Categories in Human Hippocampal Neurons Revealed by an Interpretable Decoding Model. [PDF]

open access: yesAdv Sci (Weinh)
This study examines how the human hippocampus encodes visual memory categories. By decoding spiking activity from CA3 and CA1 neurons using an interpretable model, it reveals that category‐specific representations emerge from distributed temporal coding.
She X   +17 more
europepmc   +2 more sources

A Form of List Viterbi Algorithm for Decoding Convolutional Codes

open access: yesU.Porto Journal of Engineering, 2018
Viterbi algorithm is a maximum likelihood decoding algorithm. It is used to decode convolutional code in several wireless communication systems, including Wi-Fi.
Shamsuddeen Hassan Muhammad   +1 more
doaj   +1 more source

ANN-Assisted Real-Time Blind Signal Detection Over Time-Varying Doubly-Stochastic Poisson Channel for Indoor Optical Wireless Communications

open access: yesIEEE Photonics Journal, 2020
In this letter, we present a new real-time blind signal detection technique for indoor optical communications using a supervised learning framework in an artificial neural network (ANN).
Sudhanshu Arya, Yeon Ho Chung
doaj   +1 more source

A Soft-Output STBC Decoder for Aeronautical Telemetry

open access: yesJournal of Telecommunications and Information Technology, 2020
Alamouti encoding is a well-known space time block encoding technique used to improve the received signal quality in Rayleigh fading channels. In aeronautical telemetry, this encoding technique is applied to shaped offset quadrature phase shift keying ...
Yves Louet   +2 more
doaj   +1 more source

150-Gb/s SEFDM IM/DD transmission using log-MAP Viterbi decoding for short reach optical links.

open access: yesOptics Express, 2018
Spectral efficient frequency division multiplexing (SEFDM) can improve the spectral efficiency for next-generation optical and wireless communications.
Baoxian Yu   +7 more
semanticscholar   +1 more source

FPGA implementation of trellis decoders for linear block codes [PDF]

open access: yesAdvances in Radio Science, 2014
Forward error correction based on trellises has been widely adopted for convolutional codes. Because of their efficiency, they have also gained a lot of interest from a theoretic and algorithm point of view for the decoding of block codes.
S. Scholl, E. Leonardi, N. Wehn
doaj   +1 more source

Performance of Soft Viterbi Decoder enhanced with Non-Transmittable Codewords for storage media

open access: yesCogent Engineering, 2018
The introduction of Non-Transmittable Codewords (NTCs) into Viterbi Algorithm Decoder has emerged as one of the best ways of improving performance of the Viterbi Algorithm Decoder.
Kilavo Hassan   +2 more
doaj   +1 more source

Viterbi decoding of CRES signals in Project 8

open access: yesNew Journal of Physics, 2022
Cyclotron radiation emission spectroscopy (CRES) is a modern approach for determining charged particle energies via high-precision frequency measurements of the emitted cyclotron radiation. For CRES experiments with gas within the fiducial volume, signal
A Ashtari Esfahani   +47 more
doaj   +1 more source

Hadamard–Viterbi Joint Soft Decoding for MFSK Underwater Acoustic Communications

open access: yesRemote Sensing, 2022
Multiple Frequency-Shift Keying (MFSK) has been used widely for underwater acoustic communications due to its low complexity and channel robustness.
Fei-Yun Wu   +3 more
doaj   +1 more source

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