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检索条件"任意字段=3rd International Conference on Signal and Data Processing, ICSDP 2023"

共 2977 条记录，以下是2321-2330 订阅

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Feasibility Study of Small Antenna Aperture of Air-born Satellite High Date rate Transmission Systems by Multiple Antenna and Multi-carrier signal processing

Feasibility Study of Small Antenna Aperture of Air-born Sate...

引用

3rd international conference on Intelligent System Design and Engineering Applications (ISDEA)

作者： Pan Yahan Liu Xin Tong Jun PLA Univ Sci & Technol Nanjing 210007 Jiangsu Peoples R China

ISBN: (纸本)9780769549231

Air-born satellite high data rate transmission systems can realize quick response broadband real-time information transmission of large scale maneuver. The systems also play important roles on ocean exploration and mapping, marine resources research, remote monitoring, locating and rescuing marine disasters and safeguarding marine rights. Due to the small EIRP of the satellite and the performance limitations of the traditional signal transmission technologies, the air-born satellite antenna aperture of the high data rate transmission system is still relatively large and the small fixedwing aircraft cannot realize high data rate satellite transmission. This paper analyzed the possible technical approaches to reduce the airborne antenna aperture. We proved that multiple antenna and multi-carrier signal processing which are physical layer transmission technologies can greatly reduce the airborne antenna aperture.

关键词： Multiple antenna Parallel signal processing Air-born Satellite Transmission system

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One solution of implementation and display of electronic program guide on the Android-based digital TV signal receiver

One solution of implementation and display of electronic pro...

引用

IEEE 3rd Annual international conference on Consumer Electronics - Berlin (ICCE-Berlin)

作者： Pavlovic, Branimir Kovacevic, Marko Zivanovic, Marko Kovacevic, Branimir Zigic, Nemanja RT RK Inst Comp Based Syst Novi Sad Serbia

ISBN: (纸本)9781479914128;9781479914111

This paper describes one implementation of information management for the Electronic Program Guide (hereinafter EPG) for Android-based DTV receivers. EPG data is gathered from EIT (Event Information Table [5]) tables that are located in the DTV (Digital Television) transport stream. Propagation of such data to the Android application and display of that data in Graphical User Interface (GUI) is presented in this paper. For the collection and processing of DTV data, a special layer in DTV software stack was used - the DTV software for television sets (DTV Middleware).

关键词： EPG EIT DTV DVB GUI JNI

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A high speed and compact data acquisition and storage system

A high speed and compact data acquisition and storage system

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3rd international conference on Advanced Engineering Materials and Technology (AEMT 2013)

作者： Bu, Kai Xu, Hui Sun, Zhaolin Liu, Jianbin Natl Univ Def Technol Changsha 410073 Hunan Peoples R China

ISBN: (纸本)9783037857649

data acquisition and record system plays an important role in signal processing. For the wideband signal acquisition and processing application, such as 3G/4G Base Stations, Wideband Microwave Backhaul, Military Communications, and RADAR, the need for high speed and smart software-defined radio (SDR) test platform is growing. In this paper, we implement a high compact form factor data acquisition and storage system used for the wideband signal application development. In order to implement high compact, low power and high speed real-time data storage, we use a PCIe-based switch architecture and leverage the Flash array as the storage part. The system supports RF sampling directly and offers a 16TB solid state storage module which could be read and write at the sustained speed of 12.8GB/s.

关键词： SSD ADC PCIe data acquisition FPGA

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Multiview Plus Depth Video Using High Efficiency Video Coding Method

Multiview Plus Depth Video Using High Efficiency Video Codin...

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3rd IEEE international conference on signal and Image processing Applications (ICSIPA)

作者： Noor, Norul Uyuun Mohd Karim, Hezerul Abdul Arif, Nor Azhar Mohd Sali, Aduwati Multimedia Univ Fac Engn Cyberjaya 63100 Selangor Malaysia Univ Putra Malaysia Fac Engn Dept Comp & Commun Serdang Selangor Malaysia

ISBN: (纸本)9781479902699;9781479902675

The main problem associated with 3D video delivery is huge data transmission rate especially when the data to be submitted are large video files such as multiview plus depth videos. This paper describes a new method of compression for multiview videos with depth data by using the new High Efficiency Video Coding (HEVC) technology. We propose a new compression method by applying the Reduced Resolution Depth Coding (RrdC) method to the depth videos. RrdC is applied by Down-Sampling and Up-Sampling (DSUS) the depth data of the multiview videos. The depth data is down-sampled before HEVC encoding and up-sampled after HEVC decoding operation. The proposed depth compression method used with HEVC showed a 20% savings at low bit rate when tested with 2 views plus depth video sequence.

关键词： data communication image sequences video coding

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Computation of Fractional Fourier Transform Using Filter Bank Approach and its Application

Computation of Fractional Fourier Transform Using Filter Ban...

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3rd international conference on Computer Communication and Informatics (ICCCI)

作者： Vundela, Ujwala Kumar, T. Sunil Suresh, R. VIT Univ Sch Elect Engn Vellore Tamil Nadu India

ISBN: (纸本)9781467329071;9781467329064

The objective of this paper is to implement the equivalent filter bank structures for the computation of the Fractional Fourier transform (FrFT). Through this approach we can reduce the computation time of the fractional Fourier transform ( FrFT). In this paper first the two methods to compute the fractional Fourier transform of any function is derived. Then the computation method is implemented using the filter bank approach. The fractional Fourier transform has many applications recently like we can compute the DFTs of sequences with prime lengths and sparse sequences, sequences of non-integer periodicities, reducing the noise in noisy images but it is possible when the noise and data are uncorrelated, in sonar signal processing and this transform gives better results compared to the Fourier transform in many areas. Here we discussed a method for reducing process time and increasing matching accuracy in fingerprint authentication using the fractional Fourier transform ( FRT) and also it provides more protection of personal information compared to the Fourier transform.

关键词： Fourier transform discrete Fourier transform Fractional Fourier transform signal processing chirp signal

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A data association algorithm of passive sensor based on target assumption

A data association algorithm of passive sensor based on targ...

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3rd IFAC conference on Intelligent Control and Automation Science, ICONS 2013

作者： Cao, Xiaowen Zhang, Yong Second Research Institute CAAC Chengdu China

ISBN: (纸本)9783902823458

Aiming at the problem of the static data association of multi-targets with only angle information, an improved Lagrangian relaxation that can be rapidly converged on the condition that missed detection and false alarm are allowed is presented in this paper. On the assumption that some targets are real ones, the cost matrix is modified, which contributes to the fast convergence of Lagrangian relaxation. Simulation results show that this method improves the speed and accuracy of data association, especially in multiple targets and/or heavy noise condition. Copyright © 2013 IFAC.

关键词： Target tracking

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Server Load Based Prefetching Strategy For P2P VoD Streaming 3

Server Load Based Prefetching Strategy For P2P VoD Streaming

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3rd international conference on Computer Science and Network Technology (ICCSNT)

作者： Liu, Pingshan Huang, Guimin Zhou, Ya Qin, Donghong Liu, Siyun Guilin Univ Elect Technol Res Ctr Data Sci & Social Comp Guilin Peoples R China

ISBN: (纸本)9781479905614

In a peer-to-peer (P2P) video-on-demand (VoD) system, a peer can prefetch some movie data for its future needs when it is watching a movie. These prefetched movie data can also offload the servers, which is in the best interest of VoD service providers. To offload the servers effectively, which segment of a movie a peer should prefetch is an important problem. In this paper, we propose a server load based prefetching strategy to solve this problem, which aims at reducing server load. In this strategy, we propose to use the EWMA (Exponentially Weighted Moving Average) server load to determine which segment of a movie a peer should prefetch. Furthermore, we integrate this strategy into our previously proposed P2P VoD scheme. Through simulations, we demonstrate that this strategy can effectively reduce server load.

关键词： peer-to-peer video-on-demand prefetching server load

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Image processing techniques for high speed camera-based free-field optical communication

Image processing techniques for high speed camera-based free...

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3rd IEEE international conference on signal and Image processing Applications (ICSIPA)

作者： Nava, Gabriel Pablo Kamamoto, Yutaka Sato, Takashi G. Shiraki, Yoshifumi Harada, Noboru Moriya, Takehiro NTT Corp NTT Commun Sci Labs Atsugi Kanagawa 2430198 Japan

ISBN: (纸本)9781479902699;9781479902675

Optical communication through light-emitting diodes (LEDs) and video cameras is rapidly gaining attention due to the increasing pervassiveness of those devices, and because of its potential data capacity. However, the communication quality is greatly compromised by the low resolution of the imaging sensor which produces blurred images of the LEDs at long distances. On the other hand, the images recorded at high frame rates possess particular features that can be used to improve the reception. This paper suggests image processing techniques to detect and decode the optical signals of an array of LEDs. For the case of blurred images, detection of the LED's is reinforced by a k-means clustering algorithm based on distance measurements derived from the linear correlation among pixel intensities along the time dimension. Experiments with a prototype show that the proposed algorithms can improve the bit error rate (BER) of the decoded signal. Furthermore, partial implementation on a General Purpose Graphics processing Unit (GPGPU) is also addressed, and processing times are demonstrated.

关键词： error statistics graphics processing units image processing light emitting diodes optical communication optical signal detection pattern clustering video cameras

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Design of gyroscope signed acquisition system in Space instrument based on L3G400D

Design of gyroscope signed acquisition system in Space instr...

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3rd international conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC)

作者： Xu, Tuo-qi Xu, Wei Piao, Yong-jie Chinese Acad Sci Changchun Inst Opt Fine Mech & Phys Natl & Local United Engn Res Ctr Small Satellite Changchun Peoples R China

ISBN: (纸本)9780769551227

To meet needs of Space instruments for gyro system miniaturization, we design a 3-axis digital gyro signal acquisition system, based on L3G4200D. C8051F040 microcontroller acts as the core controller in this system. The microcontroller reads the MEMS gyroscope data through the I2C bus, and then passes the data through the RS232 bus to the host computer for processing. Finally, this paper analyzed errors of the system. The test result shows that the system has a small size, light weight, high reliability. This instrument can be widely used in space.

关键词： MEMS gyroscope space instrument

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Experimental Approach On Thresholding Using Reverse Biorthogonal Wavelet Decomposition For Eye Image

Experimental Approach On Thresholding Using Reverse Biorthog...

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3rd IEEE international conference on signal and Image processing Applications (ICSIPA)

作者： Abidin, Zaheera Zainal Manaf, Mazani Shibhgatullah, Abdul Samad Univ Teknikal Malaysia Melaka UTeM Hang Tuah Jaya 76100 Melaka Malaysia Univ Teknol MARA Selangor 40450 Malaysia

ISBN: (纸本)9781479902699;9781479902675

This study focus on compression in wavelet decomposition for security in biometric data. The objectives of this research are two folds: a) to investigate whether compressed human eye image differ with the original eye and b) to obtain the compression ratio values using proposed methods. The experiments have been conducted to explore the application of sparsity-norm balance and sparsity-norm balance square root techniques in wavelet decomposition. The eye image with [320x280] dimension is used through the wavelet 2D tool of Matlab. The results showed that, the percentage of coefficients before compression energy was 99.65% and number of zeros were 97.99%. However, the percentage of energy was 99.97%, increased while the number of zeros was same after compression. Based on our findings, the impact of the compression produces different ratio and with minimal lost after the compression. The future work should imply in artificial intelligent area for protecting biometric data.

关键词： data compression iris recognition security of data wavelet transforms

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