Description: 利用Matlab编程模擬phase noise對OFDM signal的影響,希望供大家参考,Error vector magnitude (EVM) -simulation using Matlab programming phase noise of the impact of the OFDM signal hope that for your reference, Error vector magnitude (EVM) Platform: |
Size: 1063 |
Author:蔡宗軒 |
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Description: Verilog HDL: Magnitude
For a vector (a,b), the magnitude representation is the following:
A common approach to implementing these arithmetic functions is to use the Coordinate Rotation Digital Computer (CORDIC) algorithm. The CORDIC algorithm calculates the trigonometric functions of sine, cosine, magnitude, and phase using an iterative process. It is made up of a series of micro-rotations of the vector by a set of predetermined constants, which are powers of two. Using binary arithmetic, this algorithm essentially replaces multipliers with shift and add operations. In a Stratix™ device, it is possible to calculate some of these arithmetic functions directly, without having to implement the CORDIC algorithm.
-Verilog HDL : For a vector magnitude (a, b), the magnitude representation is the following : A common approach to implementing thes e arithmetic functions is to use the Coordinate Rotation Digital Computer (CORDIC) algorithm. The CORDIC algorithm calculates the trigonome tric functions of sine, cosine, magn itude, and phase using an iterative process. It i 's made up of a series of micro-rotations of the v ector by a set of predetermined cons tants, which are powers of two. Using binary ar praxiology metic, this algorithm essentially replaces m ultipliers with shift and add operations. In a Stratix Platform: |
Size: 12917 |
Author:郝晋 |
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Description: 利用Matlab编程模擬phase noise對OFDM signal的影響,希望供大家参考,Error vector magnitude (EVM) -simulation using Matlab programming phase noise of the impact of the OFDM signal hope that for your reference, Error vector magnitude (EVM) Platform: |
Size: 1024 |
Author:蔡宗軒 |
Hits:
Description: Verilog HDL: Magnitude
For a vector (a,b), the magnitude representation is the following:
A common approach to implementing these arithmetic functions is to use the Coordinate Rotation Digital Computer (CORDIC) algorithm. The CORDIC algorithm calculates the trigonometric functions of sine, cosine, magnitude, and phase using an iterative process. It is made up of a series of micro-rotations of the vector by a set of predetermined constants, which are powers of two. Using binary arithmetic, this algorithm essentially replaces multipliers with shift and add operations. In a Stratix™ device, it is possible to calculate some of these arithmetic functions directly, without having to implement the CORDIC algorithm.
-Verilog HDL : For a vector magnitude (a, b), the magnitude representation is the following : A common approach to implementing thes e arithmetic functions is to use the Coordinate Rotation Digital Computer (CORDIC) algorithm. The CORDIC algorithm calculates the trigonome tric functions of sine, cosine, magn itude, and phase using an iterative process. It i 's made up of a series of micro-rotations of the v ector by a set of predetermined cons tants, which are powers of two. Using binary ar praxiology metic, this algorithm essentially replaces m ultipliers with shift and add operations. In a Stratix Platform: |
Size: 12288 |
Author:郝晋 |
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Description: verilog 硬件平方根算法 采用与笔算平方根一样的算法-Verilog hardware and written calculation algorithm uses the square root of the square root of the same algorithm Platform: |
Size: 17408 |
Author:lizhizhou |
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Description: 流分类算法中的一种，Scalable Packet Classification 非常有参考价值-Packet classification is important for applications such as
firewalls, intrusion detection, and differentiated services. Existing
algorithms for packet classification reported in the literature
scale poorly in either time or space as filter databases
grow in size. Hardware solutions such as TCAMs do not
scale to large classifiers. However, even for large classifiers
(say 100,000 rules), any packet is likely to match a few (say
10) rules. Our paper seeks to exploit this observation to
produce a scalable packet classification scheme called Aggregated
Bit Vector (ABV). Our paper takes the bit vector
search algorithm (BV) described in [11] (which takes linear
time) and adds two new ideas, recursive aggregation of
bit maps and filter rearrangement, to create ABV (which
can take logarithmic time for many databases). We show
that ABV outperforms BV by an order of magnitude using
simulations on both industrial firewall databases and synthetically
generated databases. Platform: |
Size: 193536 |
Author:Reguse |
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Description: 该算法是经典的信噪比估计算法——误差矢量幅值法，通过计算接收信号中同相分量和正交分量的二、四阶矩，该算法能够很好的估计信号的信噪比-The algorithm is a classic signal to noise ratio estimation algorithm- the error vector magnitude method, by calculating the received signal with the phase component and quadrature component of the second, fourth-order moment, the algorithm can estimate a very good signal to noise ratio Platform: |
Size: 1024 |
Author:贾小勇 |
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Description: 1．分析研究了基于内容的图像检索系统的工作原理，关键技术如：纹
理、形状等图像底层特征的描述方法， 图像间的相似性度量方法，
图像库索引机制等。
2．研究了基于纹理特征的图像检索方法，并提出了一种基于NSCT 变
换的纹理特征提取方法。通过对SAR 图像及相关图像进行NSCT
分解，计算不同尺度不同方向上的系数幅度序列的均值，标准方差
和三阶中心矩，以此构成特征向量来描述图像的纹理。实验证明本
文提出的采用NSCT 算法有较好的特征提取效果，引入三阶中心矩
作为特征向量优于只使用均值和方差的组合特征，提高了图像检索
的查准率。
3．研究了基于形状特征的图像检索方法，并提出一种基于NSCT变换
的形状特征提取方法。把改进型Canny算子和NSCT变换相结合，先
对SAR图像及相关图像运用改进型Canny算子提取边缘，在此基础
上再进行NSCT变换，把图像的形状信息分解到不同尺度不同方向
上，从而保留各个频率分量，减少了图像形状信息的丢失。-1. First we analyze and study the principle of image retrieval system and
key techniques and algorithms of CBIR, such as the low-level feature
descriptions including texture, shape, the similarity measure between
images, the indexing methods and so on
2. Researching on the texture-based image retrieval algorithm, we
propose an algorithm of texture feature extraction based on the
Nonsubsampled Contourlet transform in this thesis. The image is
decomposed by the Nonsubsampled Contourlet transform. The mean,
standard deviation and third central moment of the magnitude of the
Nonsubsampled Contourlet coefficients at different scales and directions
are computed to extract the texture feature vector.Experiment proves the
third central moment added in NSCT arithmetic is overperformded than
only use the mean and standard deviation, and precision ratio has
improved.
3. Researching on the shape-based image retrieval algorithm, we propose
an algorithm of shape feature extraction bas Platform: |
Size: 401408 |
Author:周二牛 |
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Description: 1).Using structs, find sum, subtraction, magnitude(of a vector) and angle(in degrees) between two arbitrary dimensional vectors.
2).Using structs, find the gradient vector of a polynomial multivariable function described in termsof arrays containing coefficients and exponents of variables.
3).Implement file handling and command line input in the program
4).Implement multiplication of polynomials using single linked lists.
5).Implement a matrix by doubly linked lists. Using
insert and delete operations of doubly linked lists, Platform: |
Size: 6144 |
Author:hari |
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Description: This function quickly finds local peaks or valleys (local extrema) in a noisy vector using a user defined magnitude threshold to determine if each peak is significantly larger (or smaller) than the data around it. The problem with the strictly derivative based peak finding algorithms is that if the signal is noisy many spurious peaks are found. Platform: |
Size: 3072 |
Author:Karthi |
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Description: Draws the magnitude of vector x in the time domain, and draws its power spectrum in dB where the number of frequency points is npointsDFT. Platform: |
Size: 18432 |
Author:robertotelco |
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Description: Matlab 向量绘图工具，可应用于向量计算模拟，地图绘制，标尺选定。-This function is a substitute for the standard versions of quiver and quiverm available using a vanilla release of matlab. This version assumes a 2D vector field is being plotted using a gridded flow field from a numerical model. It is primarily intended for Earth System Model analysis.
The function enables the scaling of vectors according to a reference vector plotted in the lower right hand corner of the plot axes. The function works for both map and Cartesian axes and allows the color of vectors to be changed.
If a reference value is not provided, the reference value is calculated by rounding the median or maximum magnitude of the quiver vectors. Scaling of vectors still occurs even if the reference vector plotting is switched off. This enables different subplots to share identical scaling so that the relative magnitude of vectors can be compared between subplots (provided they share the same grid).
The function also includes the ability to plot color vectors, all of equal Platform: |
Size: 6144 |
Author:Tu Shu |
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Description: 将xy数据转换为矢量数据。输入文件为X Y两列数据，计算结果为矢量大小和方向。-Xy data is converted into vector data. The input file for the two XY data and calculated results for the vector magnitude and direction. Platform: |
Size: 376832 |
Author:wangiap |
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Description: 当要合成某一矢量时先将这一矢量分解到离它最近的两个基本矢量，而后用这两个基本矢量去表示，而每个基本矢量的作用大小就利用作用时间长短去代表。用电压矢量按照不同的时间比例去合成所需要的电压矢量。从而保证生成电压波形近似于正弦波。-When you want to when the first synthesis of a vector to the vector into the nearest two basic vector, and then use these two basic vectors to represent, and the role of each basic vector magnitude effect on the use of the length of time to represent. A voltage vector according to the different time scale to synthesize the required voltage vector. Thus guaranteed to produce approximately sinusoidal voltage waveform. Platform: |
Size: 57344 |
Author:余家泽 |
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Description: 利用Matlab编程模擬phase noise對OFDM signal的影響,希望供大家参考,Error vector magnitude (EVM) -simulation using Matlab programming phase noise of the impact of the OFDM signal hope that for your reference, Error vector magnitude (EVM) Platform: |
Size: 1024 |
Author:陈小文 |
Hits:
Description: 用于计算向量大小及角度的子程序，主程序需自己写-Used to calculate the vector magnitude and angle of the subroutine, the main program to write their own
Platform: |
Size: 1024 |
Author:yang |
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Description: This paper presents scalar & vector control of three phase induction motor. Scalar control as the
name indicates is due to magnitude variation of control variable only disregards any coupling
effect in the machine. The scalar control is very simple method for controlling the speed of
induction motor compared to the vector control which is more complex. Vector control is
completely mathematical equations based model on control of torque and speed of a three-phase
indirect vector controlled VSI fed cage induction motor drive that is controlled through the pulse
width modulation. Finally comprise the result of scalar and vector control techniqu Platform: |
Size: 335872 |
Author:hmod |
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Search - vector magnitude