Results 31 to 40 of about 6,525 (216)

Wideband partial response CPM demodulation via multirate frequency transformations and decision feedback equalization

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
■■■ Continuous phase modulation (CPM) is a popular frequency modulation technique used in mobile communications due to its power efficiency and constant modulus properties.
Wenjing Liu, Balu Santhanam
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

Performance of 2D SOVA Along and Across Track in Shingled Magnetic Recording Media

open access: yesTelfor Journal, 2017
Serial Concatenation of Two Dimensional Soft Output Viterbi Algorithm (2D-SOVA) and regular Viterbi Algorithm (VA) for 2D equalisation and detection of Shingled Magnetic Recording (SMR) media provides excellent performance as compared to the use of 1 ...
M. B. Abdulrazaq, M. Z. Ahmed, P. Davey
doaj   +1 more source

A temporally abstracted Viterbi algorithm

open access: yesCoRR, 2012
Hierarchical problem abstraction, when applicable, may offer exponential reductions in computational complexity. Previous work on coarse-to-fine dynamic programming (CFDP) has demonstrated this possibility using state abstraction to speed up the Viterbi algorithm. In this paper, we show how to apply temporal abstraction to the Viterbi problem.
Shaunak Chatterjee, Stuart Russell 0001
openaire   +3 more sources

Improving Phoneme Sequence Recognition using Phoneme Duration Information in DNN-HSMM [PDF]

open access: yesJournal of Artificial Intelligence and Data Mining, 2019
Improving phoneme recognition has attracted the attention of many researchers due to its applications in various fields of speech processing. Recent research achievements show that using deep neural network (DNN) in speech recognition systems ...
M. Asadolahzade Kermanshahi   +1 more
doaj   +1 more source

Customer active power consumption prediction for the next day based on historical profile

open access: yesAdvances in Computing and Engineering, 2022
Energy consumption prediction application is one of the most important fieldsthat is artificially controlled with Artificial Intelligence technologies to maintainaccuracy for electricity market costs reduction.
Ahmad A. Goudah   +3 more
doaj   +1 more source

A parallel Viterbi decoder for block cyclic and convolution codes

open access: yes, 2005
We present a parallel version of Viterbi's decoding procedure, for which we are able to demonstrate that the resultant task graph has restricted complexity in that the number of communications to or from any processor cannot exceed 4 for BCH codes.
Amarasinghe, Kosala   +3 more
core   +1 more source

The Viterbi algorithm and Markov noise memory [PDF]

open access: yesIEEE Transactions on Information Theory, 2000
Summary: This work designs sequence detectors for channels with intersymbol interference and correlated (and/or signal-dependent) noise. We describe three major contributions. i) First, by modeling the noise as a finite-order Markov process, we derive the optimal maximum-likelihood sequence detector (MLSD) and the optimal maximum a posteriori (MAP ...
Aleksandar Kavcic, José M. F. Moura
openaire   +2 more sources

Squeezed‐Vacuum Bosonic Codes

open access: yesAdvanced Physics Research, EarlyView.
ABSTRACT We introduce a family of bosonic quantum error‐correcting codes built as a rotation‐symmetric superposition of squeezed vacuum states, which promise protection against both loss and dephasing noise channels. The robustness of these “squeezed‐vacuum codes” arises from being arranged at evenly spaced angles in phase‐space, and simultaneously in ...
Nir Gutman   +4 more
wiley   +1 more source

Improved Decoding Algorithms for Convolutional Codes

open access: yesКібернетика та комп'ютерні технології
Introduction. The considered implementation of the Viterbi algorithm provides a reduction in hardware and time costs for decoding convoluted code sequences, and can be used for semi-realistic modeling of existing means of data transmission (for example ...
Kateryna Sosnenko
doaj   +1 more source

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