Digital Signal Processing

1804 Submissions

[11] viXra:1804.0490 [pdf] submitted on 2018-04-29 07:33:58

Information Technology Revolution

Authors: George Rajna
Comments: 40 Pages.

Researchers at the University of Washington, working with researchers from the ETH-Zurich, Purdue University and Virginia Commonwealth University, have achieved an optical communications breakthrough that could revolutionize information technology. [28] A team of researchers including U of A engineering and physics faculty has developed a new method of detecting single photons, or light particles, using quantum dots. [27] Recent research from Kumamoto University in Japan has revealed that polyoxometalates (POMs), typically used for catalysis, electrochemistry, and photochemistry, may also be used in a technique for analyzing quantum dot (QD) photoluminescence (PL) emission mechanisms. [26] Researchers have designed a new type of laser called a quantum dot ring laser that emits red, orange, and green light. [25] The world of nanosensors may be physically small, but the demand is large and growing, with little sign of slowing. [24] In a joint research project, scientists from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI), the Technische Universität Berlin (TU) and the University of Rostock have managed for the first time to image free nanoparticles in a laboratory experiment using a highintensity laser source. [23] For the first time, researchers have built a nanolaser that uses only a single molecular layer, placed on a thin silicon beam, which operates at room temperature. [22] A team of engineers at Caltech has discovered how to use computer-chip manufacturing technologies to create the kind of reflective materials that make safety vests, running shoes, and road signs appear shiny in the dark. [21] In the September 23th issue of the Physical Review Letters, Prof. Julien Laurat and his team at Pierre and Marie Curie University in Paris (Laboratoire Kastler Brossel-LKB) report that they have realized an efficient mirror consisting of only 2000 atoms. [20] Physicists at MIT have now cooled a gas of potassium atoms to several nanokelvins—just a hair above absolute zero—and trapped the atoms within a two-dimensional sheet of an optical lattice created by crisscrossing lasers. Using a high-resolution microscope, the researchers took images of the cooled atoms residing in the lattice. [19] Researchers have created quantum states of light whose noise level has been " squeezed " to a record low. [18]
Category: Digital Signal Processing

[10] viXra:1804.0260 [pdf] submitted on 2018-04-20 09:54:49

Magnetic Data Storage of the Future

Authors: George Rajna
Comments: 45 Pages.

Single-molecule magnets (SMMs) have been attracting a lot of attention recently. This is because of the increased demand for faster, longer-lasting and lower-energy IT systems, and the need for higher data storage capacity. [29] Researchers have discovered that using an easily made combination of materials might be the way to offer a more stable environment for smaller and safer data storage, ultimately leading to miniature computers. [28] Employees of Kazan Federal University and Kazan Quantum Center of Kazan National Research Technical University demonstrated an original layout of a prototype of multiresonator broadband quantum-memory interface. [27] New nanoparticle-based films that are more than 80 times thinner than a human hair may help to fill this need by providing materials that can holographically archive more than 1000 times more data than a DVD in a 10-by-10-centimeter piece of film. [26] Researches of scientists from South Ural State University are implemented within this area. [25] Following three years of extensive research, Hebrew University of Jerusalem (HU) physicist Dr. Uriel Levy and his team have created technology that will enable computers and all optic communication devices to run 100 times faster through terahertz microchips. [24] When the energy efficiency of electronics poses a challenge, magnetic materials may have a solution. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20]
Category: Digital Signal Processing

[9] viXra:1804.0256 [pdf] submitted on 2018-04-18 20:07:58

Video Frame Rate Conversion Based on Spatio-Temporal Smoothness Constrained Multilayer Motion Estimation and Inpainting

Authors: Vikas Ramachandra, Aimei Huang, Truong Q. Nguyen
Comments: 21 Pages.

We explore a new technique for video frame rate up-conversion. A noniterative multilayer motion estimation algorithm is investigated, based on spatio-temporal smoothness constraints. For regions in the interpolated frame which cannot be motion compensated, we use an exemplar based video inpainting algorithm. The proposed approach yields excellent results compared to other previous approaches
Category: Digital Signal Processing

[8] viXra:1804.0219 [pdf] submitted on 2018-04-16 11:37:53

OFDM Performance Improvement Based on Active Constellation Extension and Active Interference Cancelation

Authors: SongIl Choe, IlNam Ri, SongChol Dong, IlSok Kim, ChunHo Pak
Comments: 9 Pages.

Orthogonal Frequency Division Multiplexing (OFDM) is a transceiver technology able to achieve spectrally efficient and high data rate wireless transmissions. It is also able to transmit in a non-contiguous (NC) fashion by utilizing several separate spectral whitespaces. Cognitive radio systems based on non-contiguous orthogonal frequency division multiplexing (NC-OFDM) is a promising technique that can provide efcient bandwidth utilization for high data rate wireless communication systems under frequency selective fading environments. However, the high peak to average power ratio (PAPR) and large spectrum sidelobe power are the two major limitations at the transmitter side of the NC-OFDM based Cognitive Radio (CR) system, which may significantly reduce the power efficiency and performance of the system. In this paper, we present a joint method for the PAPR reduction and sidelobe suppression based on Active Constellation Extension(ACE) and Active Interference Cancelation(AIC). The key idea of the proposed method is to dynamically extend part of the constellation points on the secondary user (SU) subcarriers based on ACE and add several SC symbols on the primary user (PU) subcarriers based on AIC to generate the appropriate cancelation signal for joint PAPR reduction and sidelobe suppression. Since the convex optimization is computationally complex in nature, a suboptimal method is also proposed whose simulation result shows that there is a significant improvement in terms of PAPR and sidelobe reduction.
Category: Digital Signal Processing

[7] viXra:1804.0198 [pdf] submitted on 2018-04-14 07:17:58

Small Data Storage, Tinier Computers

Authors: George Rajna
Comments: 44 Pages.

Researchers have discovered that using an easily made combination of materials might be the way to offer a more stable environment for smaller and safer data storage, ultimately leading to miniature computers. [28] Employees of Kazan Federal University and Kazan Quantum Center of Kazan National Research Technical University demonstrated an original layout of a prototype of multiresonator broadband quantum-memory interface. [27] New nanoparticle-based films that are more than 80 times thinner than a human hair may help to fill this need by providing materials that can holographically archive more than 1000 times more data than a DVD in a 10-by-10-centimeter piece of film. [26] Researches of scientists from South Ural State University are implemented within this area. [25] Following three years of extensive research, Hebrew University of Jerusalem (HU) physicist Dr. Uriel Levy and his team have created technology that will enable computers and all optic communication devices to run 100 times faster through terahertz microchips. [24] When the energy efficiency of electronics poses a challenge, magnetic materials may have a solution. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20] Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest tools: a pencil, photocopy paper, and conductive paint. [19]
Category: Digital Signal Processing

[6] viXra:1804.0092 [pdf] submitted on 2018-04-06 09:09:31

QR Decomposition Algorithms & Complex Networks Based Cryo-em Image Processing/data Bases/data Mining in the Context of Higher Order Logic (Hol),scala,image J,basex & Jikes RVM

Authors: Nirmal Tej kumar
Comments: 3 Pages. QR-HOL-Scala-Java-Image J-BaseX -> Image Processing & Bioinformatics Framework.

As the TITLE is self explanatory,we are not going into the details.cryo-EM Image Processing and Informatics is one of the BEST tools to probe the frontiers of Nano-Bio Systems.Hence a simple & small attempt from us to process cryo-EM Images in the context of HOL.Written and presented in free style,we do not follow any specific format in preparing this short communication.Just highlighting the main idea.To understand our main idea,readers are requested to kindly go through the references and block diagram/s presented in this communication.
Category: Digital Signal Processing

[5] viXra:1804.0091 [pdf] submitted on 2018-04-06 09:44:21

Photonic Computer Chip

Authors: George Rajna
Comments: 39 Pages.

With novel optoelectronic chips and a new partnership with a top silicon-chip manufacturer, MIT spinout Ayar Labs aims to increase speed and reduce energy consumption in computing, starting with data centers. [25] Following three years of extensive research, Hebrew University of Jerusalem (HU) physicist Dr. Uriel Levy and his team have created technology that will enable computers and all optic communication devices to run 100 times faster through terahertz microchips. [24] When the energy efficiency of electronics poses a challenge, magnetic materials may have a solution. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20] Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest tools: a pencil, photocopy paper, and conductive paint. [19] A team of researchers with the University of California and SRI International has developed a new type of cooling device that is both portable and efficient. [18] Thermal conductivity is one of the most crucial physical properties of matter when it comes to understanding heat transport, hydrodynamic evolution and energy balance in systems ranging from astrophysical objects to fusion plasmas. [17] Researchers from the Theory Department of the MPSD have realized the control of thermal and electrical currents in nanoscale devices by means of quantum local observations. [16]
Category: Digital Signal Processing

[4] viXra:1804.0047 [pdf] submitted on 2018-04-03 11:34:33

Nanoparticle Films for Data Storage

Authors: George Rajna
Comments: 41 Pages.

New nanoparticle-based films that are more than 80 times thinner than a human hair may help to fill this need by providing materials that can holographically archive more than 1000 times more data than a DVD in a 10-by-10-centimeter piece of film. [26] Researches of scientists from South Ural State University are implemented within this area. [25] Following three years of extensive research, Hebrew University of Jerusalem (HU) physicist Dr. Uriel Levy and his team have created technology that will enable computers and all optic communication devices to run 100 times faster through terahertz microchips. [24] When the energy efficiency of electronics poses a challenge, magnetic materials may have a solution. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20] Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest tools: a pencil, photocopy paper, and conductive paint. [19] A team of researchers with the University of California and SRI International has developed a new type of cooling device that is both portable and efficient. [18] Thermal conductivity is one of the most crucial physical properties of matter when it comes to understanding heat transport, hydrodynamic evolution and energy balance in systems ranging from astrophysical objects to fusion plasmas. [17]
Category: Digital Signal Processing

[3] viXra:1804.0028 [pdf] submitted on 2018-04-01 10:26:24

Java based Natural Language Processing(NLP)-JIProlog-Marvin-JikesRVM as Informatics & Image Processing Platform to Probe & Process Cryo-EM Images – A Simple & Useful Suggestion in the Context of Electron Microscopy(EM) Domains.

Authors: Nirmal Tej kumar
Comments: 3 Pages. Short Communication

As per the TITLE of this short technical note we intend to highlight the importance of probing and processing cryo-EM images using the above mentioned technologies.This is one of the pioneering attempts to monitor the whole process of cryo-EM image processing using JI Prolog.
Category: Digital Signal Processing

[2] viXra:1804.0021 [pdf] submitted on 2018-04-02 03:46:47

Analogue Computer Rapid Calculations

Authors: George Rajna
Comments: 48 Pages.

While the advent of digital computers made these computers obsolete, they are now enjoying a resurgence thanks to ongoing research into artificial materials called metamaterials. [29] A collaboration of scientists led by Google, and including physicists from Leiden University and TU Delft, have developed a practice tool for chemists called OpenFermion. [28] Scientists at the Department of Energy's Oak Ridge National Laboratory are conducting fundamental physics research that will lead to more control over mercurial quantum systems and materials. [27] Physicists in Italy have designed a " quantum battery " that they say could be built using today's solid-state technology. [26] Researches of scientists from South Ural State University are implemented within this area. [25] Following three years of extensive research, Hebrew University of Jerusalem (HU) physicist Dr. Uriel Levy and his team have created technology that will enable computers and all optic communication devices to run 100 times faster through terahertz microchips. [24] When the energy efficiency of electronics poses a challenge, magnetic materials may have a solution. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20]
Category: Digital Signal Processing

[1] viXra:1804.0018 [pdf] submitted on 2018-04-02 05:35:54

Acceleration of FSK Caller id Demodulation Using Sos Filter Structure

Authors: WonJun Min, YuSong Kim, Dokkil Kang
Comments: 5 Pages.

Abstract - In several systems such as VoIP analog gateway it is key feature to demodulate FSK caller ID signal on voice band. FSK caller ID are widely used as it has a lot of advantages[1] and to demodulate it correctly and speedily is important for stability of system operation as long as subscriber number increases. In prior paper this subject has been researched, but sampling frequency is selected by special values that differ from typical values [2]. In other paper the system is constructed using the filter of floating coefficients (method 1) or using the filter of integer coefficients that is obtained by rounding the product of floating coefficients of long significant digit and special integer value and process additional operation to avoid over value state(method 2), so floating operations consume time[3]. The common communication systems use typical frequency such as 8 kHz and if FSK caller ID detection processing is running on embedded processors that support only fixed point operation then floating operation will consume hardly system resources. This paper introduces the SOS structure of filter to realization of FSK caller ID demodulation, so not only ensures accuracy but also accelerates processing.
Category: Digital Signal Processing