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Dual pulse shaping transmission with sinc-function based complementary Nyquist pulses

IET COMMUNICATIONS 2022年第17期16卷 2091-2104页

作者： Li, Hang Huang, Xiaojing Zhang, Jian Andrew Zhang, Hao Cheng, Zhiqun Hangzhou Dianzi Univ Sch Elect & Informat Engn Hangzhou 310018 Peoples R China Univ Technol Sydney Global Big Data Technol Ctr Sydney NSW Australia

Due to difficulties in manufacturing, data conversion devices with extremely high sampling rate are becoming the bottleneck in realising high-speed communication systems with a large bandwidth. Dual pulse shaping (DPS) transmission allows half-symbol-rate conversion devices to be used for two parallel data streams to achieve full-rate transmission, and is proved to be an effective solution. Here, two sets of ideal sinc-function based complementary Nyquist pulses for DPS transmission are proposed. Theoretically, it is shown that the proposed pulses satisfy the inter-symbol and cross-symbol interference-free conditions, and can achieve full-Nyquist-rate transmission with half of the sampling rate. With reference to commercially available D/As, two sets of practical dual spectral shaping pulses are further proposed, and the close relationship between the ideal and practical pulses are disclosed. Performance analysis for linear equalisation is provided in the presence of both timing offset between dual shaping pulses and carrier-frequency offset. Two approaches are then proposed to improve the system robustness by adjusting the clock phase of the D/As and A/Ds. Simulation results are presented to provide a comparison between the proposed DPS transmission schemes and the state of the art, in terms of the performance metrics of peak-to-average power ratio and bit error rate.

关键词： dual pulse shaping transmission half-symbol-rate conversion devices signal sampling radio receivers pulse shaping equalisers practical dual spectral shaping pulses DPS transmission schemes practical pulses cross-symbol interference-free conditions interference suppression high-speed communication systems error statistics full-Nyquist-rate transmission dual shaping pulses bit error rate inter-symbol ideal sinc-function based complementary Nyquist pulses full-rate transmission data conversion devices extremely high sampling rate parallel data streams

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Infrastructure of data Distributed Processing in High-Speed Process Research Based on Hydroelasticity Tasks 4th

Infrastructure of Data Distributed Processing in High-Speed ...

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4th International Young Scientists Conference on Computational Science (YSC)

作者： Gaynutdinova, Dinara F. Modorsky, Vladimir Ya. Masich, Grigoriy F. Perm Natl Res Polytech Univ Perm Russia Urals Dept RAS Inst Continuum Mech Perm Russia

According to the research and subsequent development of mathematical models which describe the working processes of designed installations, full-scale experiments are required for their verification. This article covers research methods for interaction processes in the dynamic system "compressible liquid - compliance structure";that is a dynamic system that involves the combination of computational modeling and full-scale experiment. Mathematical models of multi-purpose measurement optimization is used to test and determine the boundaries of cavitation;the measurements come from experimental stand. The article focuses on issues of infrastructure and installation management, as well as the interaction model between installation and supercomputer.

关键词： mathematical model of hydroelasticity input-output in supercomputer experimental stand high-speed network parallel data streams

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Time-Synchronized Visualization of Arbitrary data streams 22

Time-Synchronized Visualization of Arbitrary Data Streams

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22nd Annual IS and T/SPIE Conference on Visualization and data Analysis (VDA)

作者： Kolano, Paul Z. NASA Ames Res Ctr Adv Supercomp Div Moffett Field CA 94035 USA

ISBN: (纸本)9781628414875

Savors is a visualization framework that supports the ingestion of data streams created by arbitrary command pipelines. Multiple data streams can be shown synchronized by time in the same or different views, which can be arranged in any layout. These capabilities combined with a powerful parallelization mechanism and interaction models already familiar to administrators allows Savors to display complex visualizations of data streamed from many different systems with minimal effort. This paper presents the design and implementation of Savors and provides example use cases that illustrate many of the supported visualization types.

关键词： visualization time synchronization parallel data streams data analysis system monitoring

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Infrastructure of data Distributed Processing in High-speed Process Research Based on Hydroelasticity Tasks

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Procedia Computer Science 2015年 66卷 556-563页

作者： Dinara F. Gaynutdinova Vladimir Ya. Modorsky Grigoriy F. Masich Perm National Research Polytechnic University Perm Russia Perm National Research Polytechnic University Perm Russia Institute of continuum mechanics Urals Department RAS Perm Russia

According to the research and subsequent development of mathematical models which describe the working processes of designed installations, full-scale experiments are required for their verification. This article covers research methods for interaction processes in the dynamic system “compressible liquid - compliance structure”; that is a dynamic system that involves the combination of computational modeling and full-scale experiment. Mathematical models of multi-purpose measurement optimization is used to test and determine the boundaries of cavitation; the measurements come from experimental stand. The article focuses on issues of infrastructure and installation management, as well as the interaction model between installation and supercomputer.

关键词： mathematical model of hydroelasticity input-output in supercomputer experimental stand high-speed network parallel data streams

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On transmit diversity with imperfect channel state information

On transmit diversity with imperfect channel state informati...

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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Jorswieck, E Boche, H Heinrich Hertz Inst Nachrichtentech Berlin GmbH D-10587 Berlin Germany

ISBN: (纸本)0780374029

The optimal transmission strategy of a multiple-input single-output wireless communication link is studied in which the receiver has full channel state information and the transmitter has only long-term channel state information in terms of the channel covariance matrix. A necessary and sufficient condition for the optimal eigenvalues of the transmit covariance matrix is presented. A necessary and sufficient condition for achieving capacity when transmitting in m directions is developed. Main questions regarding the system design are answered using these conditions. It is shown how the optimal number of transmit antennas can be computed to achieve full spatial diversity given the channel covariance matrix. The maximum number of required parallel data streams is computed and a transmit diversity function is defined in order to obtain a measure for the available spatial diversity.

关键词： eigenvalues and eigenfunctions antenna arrays receiving antennas transmitting antennas radio links diversity reception channel capacity array signal processing radio receivers radio transmitters covariance matrices transmit diversity imperfect channel state information multiple-input single-output system wireless communication link covariance matrix eigenvalues spatial diversity parallel data streams transmit antennas receive antenna antenna arrays beamforming

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Time interleaved optical sampling for ultrahigh speed A/D conversion

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ELECTRONICS LETTERS 1998年第21期34卷 2012-2013页

作者： Yariv, A Koumans, RGMP CALTECH Pasadena CA 91125 USA

A scheme is proposed for increasing the sampling rate of analogue-to-digital conversion by more than an order of magnitude by combining state-of-the-art A/D converters with photonic technology. Ultra-high speed sampling is performed optically by a multiwavelength pulse train. Wavelength demultiplexers convert the high repetition rate data stream of samples into parallel data streams that can be handled by available electronic A/D converters.

关键词： analogue-digital conversion demultiplexing multiwavelength pulse train parallel data streams photonic technology repetition rate sampling rate signal sampling time interleaved optical sampling ultra-high speed A/D conversion ultra-high speed sampling wavelength demultiplexers

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