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Jacobi
Jacobi矩阵一般是坐标变换时用的——这个坐标系的坐标依次对那个坐标系的坐标求偏导数即得Jacobi矩阵。积分时从直角坐标变到球坐标、极坐标肯定要在积分号里乘上Jacobi矩阵的行列式。
若其特征值全为正,则此Jacobi矩阵正定,即它的任何二次型都大于零。并且如果是对称Jacobi矩阵,还可以实相合于一个单位阵。是比较强的条件。矩阵A的特征值是这个关于x的方程的所有根
det(A-xI)=0(Jacobi)
- 2010-12-20 23:19:38下载
- 积分:1
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Matlab_FPGA
在Matlab中实现数字通信FPGA硬件设计(In Matlab in digital communications hardware design FPGA)
- 2009-06-22 11:37:12下载
- 积分:1
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sin_wave
用软件无线电的思路,对正弦波信号的产生进行分析和仿真。(The idea of software radio, the sine wave signal generation, analysis and simulation.)
- 2012-06-14 20:25:42下载
- 积分:1
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untitled1
一个简单的小程序,可以随便下载看的,只是做一点简单的说明罢了(A example for GUI)
- 2010-07-22 11:15:54下载
- 积分:1
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fir
fir 滤波器 Systems generator 实现并转化为verilog语言(fir Filter Systems generator to achieve and into verilog language)
- 2009-11-06 11:59:50下载
- 积分:1
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OFDMforWirelineLogging
说明: 常规的单载波调制技术在带宽有限的测井电缆上的低传输速率制约着成像测井技术的发展。在分析测井
电缆传输特性和 OFDM 技术原理的基础上 ,设计了一种基于 OFDM 技术的测井电缆高速数据传输系统 ,并介绍了
基于 OFDM 技术的测井电缆高速数据传输系统的参数设计和工作原理 ,给出了不同长度测井电缆上的测试结果。
电缆实测结果表明 ,在 7 000 m长的测井电缆上 ,基于OFDM 技术的测井电缆高速数据传输系统可获得900 kbit / s
以上的数据传输速率和低于 5E28 的误码率。当变压器的接入模式为 Mode2II时 ,系统最高的数据传输速率可达到
1. 1 Mbit/ s。(To solve t he low data t ransmission rate problem in t he conventional single car rier mod2
ulation met hod for logging cable and enhance t he data t ransmission rate , a new data t ransmission
system with high data t ransmission rate for logging cable is propo sed , which is based on t he Or2
t hogonal Frequency Division Multiplexing (OFDM) technology. The working principle of OFDM
modem and t he procedure of data t ransmission system are al so presented and lot s of test s are car2
ried out on logging cables with different lengt hs. It is verified that t he data t ransmission rate can
reach 900 kbit/s on 7 000 meter s logging cable wit h bit er ror rate (BER) lower t han 5E28 , and
t he maximum data t ransmission rate is 1. 1 Mbit/s under Mode2II of t he t ransformer .)
- 2009-08-15 22:22:38下载
- 积分:1
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jull
模糊C均值聚类(FCM),即众所周知的模糊ISODATA,是用隶属度确定每个数据点属于某个聚类的程度的一种聚类算法。(Fuzzy C means clustering (FCM), known as fuzzy ISODATA, is used to determine membership of each data point belongs to a cluster of a clustering algorithm level.)
- 2010-05-12 15:39:30下载
- 积分:1
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LMS
Least Mean Square Algorithm for Beam Forming
- 2014-09-28 15:18:13下载
- 积分:1
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ch6example10
pcm编解码模型,测试指定误码条件下PCM解码语音信号的音质和可懂度(pcm codec model, sound quality and intelligibility test conditions specified BER PCM decoded speech signal)
- 2014-11-28 14:35:30下载
- 积分:1
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MATLAB-Function-Query_CN
MATLAB 函数库查询辞典大全(中文版)(MATLAB function queries dictionary- Go Chinese)
- 2011-11-08 21:52:00下载
- 积分:1