Description: 计算机房管理系统 一、功能： 1、主要是针对各大高校计算机房的管理。 2、将机房的设备管理、用户管理和上机管理等日常事务集成于一体。 3、可以自己设置机房一天内对外开放的时间和次数。 4、上机管理中可以实现预约计算机，无论时间远近。 5、上机时，可以使用一般的条形码证件，采用拉-A computer room management system, function: 1, is mainly directed against the major college computer room management. 2, will be the engine room equipment management, user management and the management of day-to-day affairs machine, seamless integration. 3, you can set up their own room one day the time and frequency of opening to the outside world. 4, the machine can be achieved reservation management computer, regardless of the time distance. 5, on the machines, you can use an ordinary bar code documents, the use of pull Platform: |
Size: 1055744 |
Author:dasdas |
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Description: 采用正交频分复用（OFDM）调制的跳频系统仿真模块，利用Simulink工具箱搭建。可更改跳频跳速,跳频频率数，载波频率，跳频间隔，FFT运算长度,循环前缀位数等相关参数。信道采用瑞利多径衰落信道和高斯信道，相关参数也可更改。希望有一定的参考价值，也希望站长开通我的下载功能，ID：gly201,非常感谢！-A simulation on Hopping Frequency communication system based on the OFDM technique. Platform: |
Size: 14336 |
Author:gly |
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Description: 一种改进的方案，它针对硬故障集的特点利用指示频率连续长度码(FDR码)进行二次编码压缩。该方法充分利用测试集中无关位较多而测试模式之间变化位较少的特征，应用贪心算法对预先计算的测试集进行了重新排序，尽可能的使相邻的向量间具有最少的不同位，排列成一个最佳的差分向量序列，然后应用FDR码对差分向量序列进行编码,最后对压缩结果重新分块，按照一次压缩的流程进行二次压缩。在解压时，使用片上解压电路解压，能高效地还原出原测试集。最后通过对Soc部分标准电路硬故障集的测试结果显示，本方案具有较好的压缩率。-a new improved method was proposed in the paper,the method using Frequency-Directed Run-length(FDR codes)coding for the twice aimed at hard-fault. It fully takes advantage of the characters that there are many don’t-care bits in the test set but a few different bits between the test patterns, Then it applies the greed calculate way to sort the precomputed test sets and make the close together vector have the least different sites possibly. It uses the FDR codes to coding the vectors,then blocks the results and uses the FDR codes to compress for the second time.
Decompression used of on-chip circuit extract unpack,it will be deoxidize the original test efficient.using the hard-fault to compress and the experimental results prove that the improved coding method of this paper has the better compression ratios has been proved at last.
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Size: 2048 |
Author:张志刚 |
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Description: 学校超市选址问题（带权有向图的中心点）
设计要求：对于某一学校超市，其他各单位到其的距离不同，同时各单位人员去超市的频度也不同。请为超市选址，要求实现总体最优
-School Supermarket location problem (with the right of the center of a directed graph) design requirements: For a school supermarkets and other units to its distance from the different units at the same time the frequency of personnel to the supermarket is also different. Please supermarket location, required to achieve the overall optimum Platform: |
Size: 1024 |
Author:yuhao |
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Description: 灵巧噪声干扰,可针对脉冲压缩雷达和PD雷达,具体干扰样式有:三角波调频干扰信号 锯齿波调频干扰信号 马鞍型噪声干扰信号 噪声调相干扰信号 噪声调频干扰信号.-Smart noise interference may be directed to pulse compression radar and PD radar, specifically jamming style are: triangle-wave frequency modulation interference signal sawtooth frequency modulation interference signal saddle-shaped noise signal noise phase modulation interference signal noise FM jamming signal. Platform: |
Size: 3072 |
Author:zyb |
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Description: 全自动可遥控旗帜升降系统以AVR单片机为核心，由PWM对电机进行变频调速，高精度光电编码器测速，闭环式电路控制。能够利用按键输入相应的指令控制旗帜的升降，还可以实现在特定位置停留的功能。利用LCD可以显示旗帜的实时高度和相应的控制命令，用LED指示旗帜是否处于半旗状态，具有语音提示报警功能，并可利用无线模块实现遥控功能，准确均匀地实现旗帜的升降。-Fully automatic remote control system to lift the banner of AVR microcontroller as the core, the PWM frequency of the motor speed, high-precision optical encoder speed, closed loop control circuit. Able to use the appropriate command control of key input flag down, you can realize the function in a specific location to stay. LCD can display the banner using real-time high and the corresponding control commands, use the LED is directed at half-mast the flag state of alarm with voice prompts, and can use the wireless module for remote control functions, to achieve uniform and accurate movements of the flag. Platform: |
Size: 349184 |
Author:刘强 |
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Description: 对于某一学校超市，其他各单位到其的距离不同，同时各单位人员去超市的频度也不同。请为超市选址，要求实现总体最优。（带权有向图的中心点）-Schools for a supermarket, other units of the distance of its different units while the frequency of the supermarket staff are also different. Please supermarket location, required to achieve optimal overall. (Weighted directed graph of the center) Platform: |
Size: 3336192 |
Author:陈中正 |
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Description: Adaptive equalization教程-Adaptive equalizers compensate for signal distortion
attributed to intersymbol interference (ISI), which is
caused by multipath within time-dispersive channels.
Typically employed in high-speed communication
systems, which do not use differential modulation
schemes or frequency division multiplexing
The equalizer is the most expensive component of a data
demodulator and can consume over 80 of the total
computations needed to demodulate a given signal [01]
Adaptive Equalization
KEVIN BANOVIC Slide 3
RESEARCH CENTRE FOR INTEGRATED MICROSYSTEMS – UNIVERSITY OF WINDSOR
EQUALIZATION TUTORIAL
Channel
Equalizer
Adjustment
FIR
Equalizer
Decision
Device
Error
Computation
s k ( ) y k ( )
e k ( )
r k ( ) s k ( )
Training
Sequence
Symbol
Statistics
Blind Mode
Decision-Directed
Mode Training Mode
Adaptive Equalization Platform: |
Size: 404480 |
Author:陈鹏 |
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Description: PSK31 Model with Symbol Timing and Carrier Recovery-This model implements a communication standard known as PSK31. The transmit portion of the model can either synthesize the PSK31 signal, or use real world signals that were captured as Wave files.
The receiver features include: Automatic Frequency Control, Automatic Gain Control, Symbol Timing recovery with a fractionally spaced Farrow interpolator, Decision Directed Carrier Phase Lock Loop, dbsk or dqpsk demodulation with FEC.
References are provided in the Model. Platform: |
Size: 954368 |
Author:刘建国 |
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Description: Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal frequency
division multiplexing (OFDM) systems and address the issue of
channel estimation. Different other MIMO-OFDM, where
symbols at all tones are always available for decision-directed
channel estimation, in D-BLAST OFDM, we update estimated
channel parameters each time a layer is detected with a least
square (LS) approach, using a pieced combination of received signals
at previous and current OFDM blocks. The initial estimate is
further refined by a robust estimator to exploit the time correlation
of channel parameters among OFDM blocks. Computer simulation
results show the performance improvement over block-wise
channel estimation. It is also shown that D-BLAST with proposed
channel estimation is robust to fast fading of channel parameters.-Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal frequency
division multiplexing (OFDM) systems and address the issue of
channel estimation. Different other MIMO-OFDM, where
symbols at all tones are always available for decision-directed
channel estimation, in D-BLAST OFDM, we update estimated
channel parameters each time a layer is detected with a least
square (LS) approach, using a pieced combination of received signals
at previous and current OFDM blocks. The initial estimate is
further refined by a robust estimator to exploit the time correlation
of channel parameters among OFDM blocks. Computer simulation
results show the performance improvement over block-wise
channel estimation. It is also shown that D-BLAST with proposed
channel estimation is robust to fast fading of channel parameters. Platform: |
Size: 80896 |
Author:werad |
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Search - frequency directed