Description: ＰＣＭ采编器器系统是一种常用的遥测设备，它可以采集多路数据并进行通信传输和数据处理，PCM 采编器控制采集各个数据通道数据的时序，并加上帧同步码形成一定格式的数据，再进行并/串转换，形成串行数据流送到调制设备供传送。-PCM Editor System is a common telemetry equipment, It can be multi-channel data acquisition and communication transmission and data processing, PCM journalists Control Data Acquisition various sequential data access, and frame synchronization with a certain format, conduct and / serial conversion, serial data stream to form sent to the modulation equipment for transmission. Platform: |
Size: 876 |
Author:张全文 |
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Description: 关于simu1:
在simlink运行之前的初始化过程中，完成了信道时延和幅度的估计，多径合成权系数估计
多径合成采用可选EG/MR/MMSE合成
信道可选白噪声信道AWGN和IEEE80.215.3a UWB标准信道模型(CM1-CM4)但为了简化，
这里采用了IEEE80.215.3a给出了信道模型中的仿真数据包(如果你是作超宽带的，信道模型程序和数据可从IEEE80.215.3a网站获取)
和大部分仿真一样，模型中的Eb/No指的是单比特信息符号携带的能量和噪声的比例，监督的讲，在AWGN信道中，Eb/No为4.31db时,误码率0.01
关于zslsimu直接运行simuuwb.m可看到结果)
显然和simu1一样，只是增加了.m文件，修改.m文件中的重要参数:多径数、PN序列长度、PN序列、单个信息码元宽度Tb(单位ns)、每个脉冲宽度Tc(单位ns)、系统的仿真精度Ts(单位ns)、仿真时间
chanidx=1:1是因为考虑信道数据文件太大，不好上传，想得到精确的仿真，同一个信道类型(chantype)，最好仿真100次实现，信道文件可由UWB标准组织下载-on simu1 : simlink operation before the initialization process, completed the channel delay and the magnitude of the estimates, Multi-Path weights estimated Drive synthesis using the optional EG/MR/Synthesis MMSE Channel optional white noise channel AW GN and IEEE80.215.3a UWB channel model (CM1- CM4) in order to simplify IEEE80.215.3a used here is a channel model for the simulation data packets (if you were for extra-wide belt, channel model and data from IEEE80.215.3a website access) and most simulation, Model of Eb/No refers to the single-bit symbols to carry the message of energy and noise ratio, supervision speaking, In AWGN channel, Eb/No for 4.31db, BER 0.01 zslsimu directly on the operation simuuwb.m can see the result) clearly and si mu1, only increased. m document change Platform: |
Size: 39936 |
Author:海涛 |
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Description: This paper investigates the design of joint frequency
offset and carrier phase estimation of a multi-frequency time division
multiple access (MF-TDMA) demodulator that is applied to
a digital video broadcasting—return channel system via satellite
(DVB-RCS). The proposed joint estimation algorithm is based on
the interpolation technique for two correlation values in the frequency
and phase domains. This simple interpolation technique
can significantly improve frequency and phase resolution capabilities
of the proposed technique without increasing the number of
the correlation values. In addition, the overall block diagram of a
digital communications receiver for DVB-RCS is presented, which
was designed using the proposed estimation algorithms.
Index Terms—Carrier phase estimation, DVB-RCS, frequency
offset estimation, interpolation, joint estimation, MF-TDMA.-This paper investigates the design of joint frequencyoffset and carrier phase estimation of a multi-frequency time divisionmultiple access (MF-TDMA) demodulator that is applied toa digital video broadcasting-return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based onthe interpolation technique for two correlation values in the frequencyand phase domains. This simple interpolation techniquecan significantly improve frequency and phase resolution capabilitiesof the proposed technique without increasing the number ofthe correlation values. In addition, the overall block diagram of adigital communications receiver for DVB-RCS is presented, whichwas designed using the proposed estimation algorithms.Index Terms-Carrier phase estimation, DVB-RCS, frequencyoffset estimation, interpolation, joint estimation, MF-TDMA. Platform: |
Size: 500736 |
Author:吴大亨 |
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Description: 本系统是DIV+CSS的网站管理系统，采用网络中已经成熟、稳定地技术ASP+Access/SQL开发而成，通过它，您可以很方便地管理自己网站。
功能特点如下：
多频道管理，无限制频道克隆，支持频道二级域名绑定功能，文章内容自动分页；
全站生成HTML页面；增加系统安全性，自由设置生成HTML文件扩展名和存放目录,内容自动分页。
用户管理，多用户管理分权限发布、管理软件信息；用户短信、收藏功能，会员在线充值，网银在线-The system is DIV+ CSS site management system, a network already mature, stable technologies ASP+ Access/SQL developed through it, you can easily manage their own Web site. Features are as follows: multi-channel management, unlimited Channel cloning, support for Channel 2 domain binding function, the article content automatically paging Total Station generates HTML pages increase system security, freedom set to generate HTML file name extension, and store directory, content automatic paging. User management, multi-user management sub-authority releases, information management software users SMS, collection features, Member Online Recharge, net silver online Platform: |
Size: 4507648 |
Author:leihong |
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Description: 《医学图象的远程传输系统》，使用CAnsycSocket类来进行图象 数据的远程传输，使用自编的动态库来模拟医学图象的采集，使用intel的ijl库来进行图象的jpeg压缩 （你需要自己去www.intel.com下载ijl），使用access的数据库对图象进行存档处理，使用多线程来进 行多通道的图象采集，以及客户端的数据的多线程同步传送。- Remote medical image transmission system , the use of CAnsycSocket category for remote transmission of image data, the use of self-dynamic library to simulate the medical image acquisition, the use of intel to the ijl Treasury jpeg image compression (you need to go to www.intel.com download ijl), the use of the database access to archived images to deal with, the use of multi-threaded for multi-channel image acquisition, as well as client data transmission of multi-thread synchronization. Platform: |
Size: 3888128 |
Author:tony |
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Description: 基于UDP协议的多路模拟信号采集与查询
数据库用ACCESS 界面用VB 做的-UDP protocol-based multi-channel analog signal acquisition and query the database using ACCESS interface to use VB to do the Platform: |
Size: 61440 |
Author:xuyang |
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Description: 这是一个介绍多路载波监听访问和冲突检测协议的实例仿真-Introduction This is a multi-channel carrier sense access and conflict detection protocol simulation Platform: |
Size: 308224 |
Author:yzf |
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Description: 基于vc++实现的DVB_C发送卡的接收程序。实现了多路文件的接收，以及Access数据库管理-Based on the vc++ to achieve DVB_C send cards to receive the procedure. Document to achieve a multi-channel receiver, as well as the Access database management Platform: |
Size: 3394560 |
Author:hans |
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Description: 多功能电力载波模块采用了高度集成的电路设计，整个模块取消了外围电力线耦合电路和调整电路，具体应用时简单到只需接入外部供电电源即可，数据的发送和接收也只需遵循常用的单片机串口协议进行操作即可。
适用场合，例如：
1.宾馆、酒店、商场、学校、小区灯光的集中控制和管理
2.无人值班的电气设备的远程控制和管理
3.工厂、矿井的电气设备的远程控制和监控
4.远程温度、湿度的测量和监控
5.远程抄表系统
6.简单的基于电力线的内部呼叫系统
7.智能家居的各种应用
8.替代各种有线方式的数据传输，节省成本-Low-cost Power Line Multi-function module using a highly integrated circuit design, the entire abolition of the external module power line coupling circuit and adjust the circuit, the specific application can access the simple to the external power supply can, to send and receive data can also follow the commonly used single-chip serial port protocol operation.
The application of occasions, such as:
1. Guesthouses, hotels, shopping malls, schools, residential lighting control and management of centralized
2. No one on duty electrical equipment, remote control and management
3. Factories, mine electrical equipment remote control and monitoring
4. Remote Temperature and humidity measurement and control
5. Remote meter reading system
6. A simple power line-based system of internal calls
7. Intelligent home applications
8. To replace the various forms of data transmission cable, to cut costs Platform: |
Size: 560128 |
Author: |
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Description: darkspy是一款针对rootkit（攻击者用来隐藏自己的踪迹和保留root访问权限的工具）的多通道检测工具，它联合了多种扫描技术，-darkspy is a targeted rootkit (the attacker to hide their tracks and keep root access tool) multi-channel detection tool, it combined a variety of scanning techniques, Platform: |
Size: 635904 |
Author:my |
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Description: 本书不仅回顾了通信信号处理的经典研究领域，如自适应均衡、信道建模和识别、多用户检测和阵列处理，而且分析研究了一些新领域，如自适应编码调制、多输入多输出（MIMO）系统、分集合并和时频分析。此外，本书还探讨了神经网络、蒙特卡洛马尔可夫链和混沌等新兴技术，并对未来移动通信具有发展前途的方法进行了很好的概括性阐述。-The book investigates classical SP areas such as adaptive equalization, channel modeling and identification,
multi-user detection, and array processing. It also investigates newer areas such as adaptive coded
modulation, multiple-input multiple-output (MIMO) systems, diversity combining, and time-frequency
analysis. It explores emerging techniques such as neural networks, Monte Carlo Markov Chain (MCMC)
methods, and Chaos. It offers an excellent tutorial survey of promising approaches for future mobile
communications such as cross-layer design in multi-access networks and adaptive wireless networks. Platform: |
Size: 7909376 |
Author:YuJD |
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Description: tsint.f90
Generates and writes a set of synthetic seismic traces that are read by the
t_direct_decon.f90 code. The synthetic data is composed of 10 traces of
1000 samples, with a multiple of period p=200 samples, and reflection
coefficient c=-0.5. This periodic reflectivity is convolved with a
minimum-phase wavelet of 10 samples forming a synthetic trace that is
replicated 10 times to generate the input matrix. For the single-channel
example no noise is added to the synthetic data. For the multi-channel example
a little noise is added to prevent instability in the algorithm, once the
multi-channel algorithm fails because two or more channels are equal. The
input data matrix is stored in direct access format in the input_panel.dir
file.
t_direct_decon.f90
Main code, reads and deconvolves data stored in the input_panel.dir file.
The output is stored in direct access format in the deconvolved.dir file.
The input and output data are also stored in a ASCII format in the
in_out.dat file.-T_direct_decon is a Fortran 90 program for performing direct multichannel predictive deconvolution. Platform: |
Size: 8192 |
Author:蒋礼 |
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Description: MAC(以太网媒体访问控制)是以太网IEEE 802.3协议规定的数据链路层的一部分,使用FPGA替代ASIC,实现以太网MAC功能非常实用。能够实现硬件系统多路多端口的以太网接入,并在自行开发需要以太网接入的嵌入式处理器设计中得到应用。具体探讨以太网MAC的功能定义,使用FPGA实现以太网MAC的方法,对以太网的相关应用设计具有指导作用。
-MAC (Ethernet Media Access Control) is a protocol under the IEEE 802.3 Ethernet data link layer part of the use of FPGA alternative ASIC, Ethernet MAC functionality is very useful. Hardware system to achieve multi-channel multi-port Ethernet access and Ethernet access to its own development needs of embedded processor design has been applied. To specifically explore the functional definition of the Ethernet MAC using FPGA Ethernet MAC method, the design of Ethernet-related applications guide. Platform: |
Size: 1572864 |
Author:陈辉 |
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Description: 一套开源WEB的网站管理系统，
采用网络中已经成熟、稳定地技术ASP+Access/SQL开发而成，通过它，您可以很方便地管理自己的网站。功能特点如下：
1.多频道管理，无限制频道克隆，支持频道二级域名绑定功能，文章内容自动分页；
2.全站生成HTML页面；增加系统安全性，自由设置生成HTML文件扩展名和存放目录,内容自动分页。
3.用户管理，多用户管理分权限发布、管理软件信息；用户短信、收藏等功能；
4.下载模块，支持计点会员和包月会员下载，反点等功能，无限制添加下载服务器，下载点数设置，添加软件只需要填写软件名称；
5.强大的模板后台，可灵活自由的生成模板标签，让您的站点版式自由改变；
6.强大的文章、软件采集功能，文章采集的同时可以选择是否下载图片到本地及分页采集；
7.支持Tag及用户评价功能；
8.其它模块，友情连接自助申请，上传水印，内容关键字功能。
后台登陆地址：/admin/admin_login.asp
默认管理员：admin 密码：admin-A set of open source WEB site management system
Use of the network is mature and stable technology ASP+ Access/SQL development made by it, you can easily manage their website. Features are as follows:
1. Multi-channel management, unlimited channel cloning to support Channel 2 domain binding function, auto page article content
2. All stations generate HTML page to increase system security, freedom to set generate HTML file extension and store directory, the contents of automatic paging.
3. User management, multi-user management rights sub-publishing, information management software user messaging, collections and other functions
4. Download module, to support members and a subscription account point download, counter-point functions, add unlimited download server, download the points to set, add the software only required to complete the software name
5. A strong background templates can be flexible and free label templates generated, so that freedom to change your site Platform: |
Size: 8938496 |
Author:meihuake |
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Description: The Interleaved Frequency Division Multiple Ac-
cess (IFDMA) scheme is based on compression, repetition and
subsequent user dependent frequency shift of a modulated signal.
Multiple access is enabled by the assignment of overlapping but
mutually orthogonal subcarriers to each user. In this paper it
is shown that IFDMA can be regarded as unitary precoded
OFDMA with interleaved subcarriers. On the other hand,
IFDMA is shown to be a CDMA variant with frequency domain
orthogonal signature sequences and chip interleaving. Thus, it
combines the advantages of single and multi carrier transmission
such as low peak to average power ratio, orthogonality of the
signals of different users even for transmission over a time
dispersive channel and low complexity. Simulation results show
the good performance of coded IFDMA transmission over a
mobile radio channel for different data rates. Platform: |
Size: 529408 |
Author:Casper |
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Description: Multi user mimo for increase the channel capacity for multiple user that want to access the same channel at same time Platform: |
Size: 4096 |
Author:Helm |
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Description: 基于LabVIEW的多通道数据采集系统的设计,江苏科技大学硕士毕业论文。全文分为2部分第一部分数据采集硬件的设计中，采用DSP 作为采集卡的CPU，利用USB 接口实现了采集卡与PC 机的通信，整个外围逻辑时序部分用CPLD 控制。第二部分数据管理与分析，作者利用LabVIEW 编写了基于Windows XP的上位机应用程序以及上位机与采集卡之间的通信程序；利用LabSQL 工具包建立了ACCESS 数据库，实现对采集到的数据的存储，并可以查询历史数据。同时系统可以生成报表以及可以对所需要的数据进行打印，并可以对得到的数据进行一些必要的分析，如加窗函数，逐点分析。本文版权归作者所有！下载后产生后果下载者个人负责-LabVIEW-based multi-channel data acquisition system, Jiangsu University of Science Thesis. Paper is divided into two parts the first part of data acquisition hardware design, acquisition card with DSP as CPU, USB interface using a capture card and PC-communication, the entire outer part of the logic timing control with the CPLD. The second part of the data management and analysis, the authors prepared using LabVIEW Windows XP-based PC applications and PC and the communication between the acquisition card program use LabSQL Kit ACCESS database was established to achieve the collected data storage and can query the historical data. At the same time the system can generate the required reports and data can be printed, and can get the necessary data analysis, such as windowing function, point by point analysis.
将中文译成英语
All copyright of the article! Consequences for those who download download individual responsibility
Platform: |
Size: 784384 |
Author:吴小平 |
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Description: 摘 要:本文介绍了采用双声道音频A/D转换芯片CS5331A和TMS320VC5402 DSP组成的双声道音频采集系统
的设计。给出了系统的硬件设计方案,包括CS5331A与TMD320VC5402 DSP的接口电路和信号时序。在硬件方案
的基础上,给出了系统的总体软件流程,并详细介绍了DSP的多通道缓冲串行口(McBSP)和直接存储器访问(DMA)
的初始化设置,给出了相应例程。最后,给出了采集到DSP内存中的双声道音频数据的波形。
关键词:采集 DMA McBSP DSP
-Abstract: This paper describes the use of two-channel audio A/D conversion and TMS320VC5402 DSP chip CS5331A composed of two-channel audio acquisition system. Shows the system hardware design, including the CS5331A and TMD320VC5402 DSP interface circuit and signal timing. In the hardware solution, based on the given system' s overall software process, and details of the DSP multi-channel buffered serial port (McBSP) and direct memory access (DMA) initialization settings, gives the corresponding routines . Finally, given the collection to the DSP memory in two-channel audio data waveform. Keywords: acquisition DMA McBSP DSP Platform: |
Size: 188416 |
Author:ws |
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Search - MULTI CHANNEL ACCESS