Results 21 to 30 of about 426,723 (277)

A Generic Multi-Level SVM Scheme Based on Two-Level SVM for n-Level Converters

open access: yesEnergies, 2020
Multi-level converters are widely used in various industrial applications. Among various space vector modulation (SVM) schemes, the multi-level SVM scheme based on two-level space vector pulse width modulation (SVPWM) is recognised as a simplified multi ...
Chen Wei   +3 more
doaj   +1 more source

On the capacity of bounded rank modulation for flash memories [PDF]

open access: yes, 2009
Rank modulation has been introduced as a new information representation scheme for flash memories. Given the charge levels of a group of flash cells, sorting is used to induce a permutation, which in turn represents data.
Bruck, Jehoshua   +2 more
core   +6 more sources

Nonzero Staircase Modulation Scheme for Switching DC-DC Boost Converter

open access: yesJournal of Control Science and Engineering, 2020
This paper presents a novel modulation scheme known as the nonzero staircase modulation scheme for switching DC-DC boost converters. This modulation scheme generates two distinct pulse trains/firing signals when a 50 Hz nonzero staircase modulating ...
Ayodeji Olalekan Salau   +2 more
doaj   +1 more source

Coded modulation scheme employing turbo codes

open access: yesElectronics Letters, 1995
The authors present a turbo coding scheme for bandwidth-efficient modulation that outperforms turbo coding with Gray mapping by employing Ungerboeck codes as component codes. The scheme can be decoded iteratively and achieves very good bit error rates at low signal to noise ratios after a small number of iterations. 8PSK is used as an example, although
Robertson, P., Wörz, T.
openaire   +3 more sources

Cayley-Bacharach schemes and their canonical modules [PDF]

open access: yesTransactions of the American Mathematical Society, 1993
A set of s s points in P d {\mathbb {P}^d} is called a Cayley-Bacharach scheme ( CB {\text {CB}} -scheme), if every subset of s − 1 s - 1 points has the same Hilbert function.
Geramita, Anthony V.   +2 more
openaire   +1 more source

An improved local oscillator modulation of modulated sampling scheme for multiple mono-pulse radar signals reconstruction

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
The modulated sampling scheme can intercept noncooperative signals distributed in a wide frequency band by using a single receiving channel, which is an efficient architecture in many radar and communication applications.
Zhaoyang Qiu   +4 more
doaj   +1 more source

Comparison of Configurable Modular Two-Level and Three-Level Isolated Bidirectional DC–DC Converters for Super-Capacitor Charging in DC Shore Power Systems

open access: yesEnergies
Compared to the AC counterpart, the DC shore power system provides a significant advantage of efficient power supply from renewable sources to ships and onshore loads.
Wenqiang Xie   +4 more
doaj   +1 more source

Performance analysis of hybrid MPAPM technique for deep‐space optical communications

open access: yesIET Communications, 2021
A hybrid multiple pulse amplitude and position modulation (H‐MPAPM) scheme based on gradual multi‐pulse pulse‐position modulation (G‐MPPM) and multi‐level pulse amplitude modulation (M‐PAM) schemes is proposed for deep‐space optical communication.
Sadiq Idris   +2 more
doaj   +1 more source

Multi-level pulse position modulation scheme for enhancing link capacity in electromagnetic nanocommunication networks

open access: yesICT Express, 2022
In this letter, a new nanocommunication modulation scheme termed multi-level pulse position modulation (ML-PPM) is proposed. The ML-PPM approach will boost the link capacity of a nanocommunication system while achieving a processing gain in reception ...
Pankaj Singh, Sung-Yoon Jung
doaj   +1 more source

Correcting Charge-Constrained Errors in the Rank-Modulation Scheme [PDF]

open access: yes, 2009
We investigate error-correcting codes for a the rank-modulation scheme with an application to flash memory devices. In this scheme, a set of n cells stores information in the permutation induced by the different charge levels of the individual cells.
Bruck, Jehoshua   +2 more
core   +4 more sources

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