Location:
Search - PN
Search list
Description: TVS的特性及主要参数 1、TVS的特性曲线TVS的电路符号与普通稳压二极管相同。它的正向特性与普通二极管相同；反向特性为典型的PN结雪崩器件。在瞬态峰值脉冲电流作用下，流过TVS的电流，由原来的反向漏电流-TVS characteristics and main parameters of 1, TVS characteristic curve of TVS circuit symbols with the same general regulator diode. Its characteristics are the same as with ordinary diodes reverse characteristics of a typical avalanche PN junction devices. Peak pulse current in the transient effect of the current flowing through TVS from the reverse leakage current
Platform: |
Size: 1024 |
Author: niuxinhjun |
Hits:
Description: 以pn码为信源，通过定时同步和载波恢复。在收端得到正确的信息。-Pn in the source code for the letter, through the timing synchronization and carrier recovery. Client in the admission to be correct information.
Platform: |
Size: 10240 |
Author: wupengcheng |
Hits:
Description: 用matlab进行直序扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真-Using matlab for Direct Sequence Spread Spectrum Communication System Simulation and Analysis of bit error rate PN code synchronization methods and simulation
Platform: |
Size: 12288 |
Author: 吴胜军 |
Hits:
Description: 设pn序列长度为Lc,为输入信号的Lc倍，输入带宽为f,则经过扩频后，信道中传输信号的带宽为Lc*f,.躁声也衰减为原来的1/Lc。在解调端用相同的pn序列进行解调。这样的好处是频带扩宽了，有利于对传送信号的保密，只有知道调制端的pn序列，才能正确地解调出信号；另外，由于躁声的衰减，在很大程度上降低了误码率-Based pn sequence length Lc, for the input signal Lc times, input bandwidth for f, then after a spread-spectrum, the channel bandwidth for the transmission signal Lc* f,. Attenuation would have been impatient for the original 1/Lc. Demodulation client in the same pn sequence demodulator. This advantage is widening the band, and is conducive to the transmission of signals remain confidential and will only know that side of pn sequence modulation in order to correctly signal demodulation In addition, since the sound attenuation impatient to a large extent reduce the bit error rate
Platform: |
Size: 1024 |
Author: xuxiaodong10 |
Hits:
Description: 多址移动通信系统中扩频序列的研究
m,PN,walsh序列等扩频序列-Multiple Access Mobile Communication System Research spreading sequences m, PN, walsh sequence spread-spectrum sequences
Platform: |
Size: 2049024 |
Author: 1 |
Hits:
Description: 介绍了基于伪码测距的某定位系统的设计方案，简要分析了伪码测距的原理，研究了用FPGA实现伪码的捕获与跟踪的方法。-Pseudo-code based on the introduction of a positioning system location design scheme, a brief analysis of the principle of pseudo-code ranging study using the FPGA realization of PN code acquisition and tracking method.
Platform: |
Size: 51200 |
Author: 王晨磊 |
Hits:
Description: 加入白噪声的音频水印程序，采用3级小波分解，将随机序列嵌入到低频系数中-Adding white noise of the audio watermarking procedure for the three wavelet decomposition, the random sequence is embedded into the low frequency coefficient
Platform: |
Size: 1024 |
Author: 小刀 |
Hits:
Description: 扩频通信中的捕获问题，用GOLD码进行扩频， PN码相位捕获，利用捕获的相位，接收机产生偏移的GOLD码，进行解扩和误码率计算-Spread Spectrum Communication capture problems, and use spread-spectrum GOLD code, PN code phase acquisition, the use of capture phase, receivers have offset the GOLD code, to conduct de-spread and bit error rate calculation
Platform: |
Size: 2048 |
Author: 汪龙 |
Hits:
Description: 在加密系统中,伪噪声序列(即PN序列)得到了广泛的应用,最常用的PN序列是最大长度线性码序列,又称为m序列,是由线性反馈移位器产生的,其特点是具有周期性和伪随机性。-In the encryption system, the pseudo-noise sequence (ie, PN sequence) is widely used, the most common PN sequence is the maximum length linear sequences, also known as m sequences, by the linear feedback shift generated, its characterized by periodic and pseudo-randomness.
Platform: |
Size: 1024 |
Author: 罗 |
Hits:
Description: 定义Name类的重载赋值函数。#include<iostream.h>
#include<string.h>
class Name
{ public :
Name ( char *pN )
Name( Name & )
Name& operator=( Name& )
~ Name()
protected :
char *pName
int size
}
Name::Name ( char *pN )
{ cout <<" Constructing " << pN << endl
pName = new char[ strlen( pN ) + 1 ]
if( pName != 0 ) strcpy( pName,pN )
size = strlen( pN )
}-Name class definition overloaded assignment function.# Include
Platform: |
Size: 1024 |
Author: 伍国 |
Hits:
Description: 多项式相加相乘C语言链表实现
必须按指数由小到大输入各项的系数和指数-Polynomial sum multiplied C language linked list must be the realization of the index of input from small to big factor and the index
Platform: |
Size: 1024 |
Author: kkk |
Hits:
Description: 一种基于PN训练序列的OFDM时频同步的新算法。通过构造倒序结构的同步训练序列，获得了较好的定时性能。-PN training sequence based on the OFDM time-frequency synchronization of the new algorithm. By constructing a reverse structure synchronization training sequence, to obtain a better performance from time to time.
Platform: |
Size: 116736 |
Author: fisher |
Hits:
Description: 一维序列中峰值提取//Data为待分析的数组；peak为排序后的数组；
//m 为Data数组大小；n 为peak数组的大小。
//m_Min 为Data数组中最小值
//假设峰值个数PN>n
-One-dimensional sequence in the peak extraction// Data for the array to be analyzed peak for the array after sorting // m for the Data array size n for the peak size of the array.// m_Min minimum value for the Data array// assume that the peak number of PN
Platform: |
Size: 1024 |
Author: 小何 |
Hits:
Description: 这是个扩频系统中的PN码仿真程序，提供了详尽的扩频码生成过程，相信对大家有所帮助-This is a spread-spectrum systems PN code simulation program, provided a detailed spreading code generation process, believe that U.S. help
Platform: |
Size: 26624 |
Author: 刘元涛 |
Hits:
Description: 未知密钥的情况下，攻击加密文件，获得明文-Key unknown circumstances, to attack an encrypted file, access to expressly
Platform: |
Size: 943104 |
Author: luqi |
Hits:
Description: 基于MATLAB的OFDM信道估计算法，使用了PN序列作为导频，两种导频处信道估计处理方法，中间特别加入了相位估计处理-MATLAB-based channel estimation algorithm for OFDM using PN sequence as a pilot and two pilot channel estimation Department treatment methods, particularly the middle to join the treatment phase estimation
Platform: |
Size: 2048 |
Author: 李伟林 |
Hits:
Description: 有关扩频通信系统的MATLAB程序----直接序列扩频系统，PN序列的产生。-On the spread spectrum communication system in MATLAB procedures---- Direct Sequence Spread Spectrum Systems, PN sequence generation.
Platform: |
Size: 2048 |
Author: 杨毅 |
Hits:
Description: Euler函数:
m = p1^r1 * p2^r2 * …… * pn^rn ai >= 1 , 1 <= i <= n
Euler函数：
定义：phi(m) 表示小于等于m并且与m互质的正整数的个数。
phi(m) = p1^(r1-1)*(p1-1) * p2^(r2-1)*(p2-1) * …… * pn^(rn-1)*(pn-1)
= m*(1 - 1/p1)*(1 - 1/p2)*……*(1 - 1/pn)
= p1^(r1-1)*p2^(r2-1)* …… * pn^(rn-1)*phi(p1*p2*……*pn)
定理：若(a , m) = 1 则有 a^phi(m) = 1 (mod m) 即a^phi(m) - 1 整出m
在实际代码中可以用类似素数筛法求出
for (i = 1 i < MAXN i++)
phi[i] = i
for (i = 2 i < MAXN i++)
if (phi[i] == i)
{
for (j = i j < MAXN j += i)
{
phi[j] /= i
phi[j] *= i - 1
}
}
容斥原理：定义phi(p) 为比p小的与p互素的数的个数
设n的素因子有p1, p2, p3, … pk
包含p1, p2…的个数为n/p1, n/p2…
包含p1*p2, p2*p3…的个数为n/(p1*p2)…
phi(n) = n - sigm_[i = 1](n/pi) + sigm_[i!=j](n/(pi*pj)) - …… +- n/(p1*p2……pk)
= n*(1 - 1/p1)*(1 - 1/p2)*……*(1 - 1/pk)
-err
Platform: |
Size: 1024 |
Author: Campbell |
Hits:
Description: ％ 用于模拟PN结中载流子的分布、电场和电势
％ 总长为 L 的半导体截面上，左侧为 N 区，掺杂浓度 NA；右侧为 P 区，掺杂浓度为 ND
％ 假设截面积足够大- Used to simulate the PN junction carrier distribution, electric field and electric potential L total length of the semiconductor section, left for N areas, doping concentration NA the right for the P zone, doping concentration ND assumption for the cut-off an area large enough
Platform: |
Size: 2048 |
Author: wylie |
Hits:
Description: Gold 码的自相关序列的生成器以及自相关序列的特性图方面的仿真-the auto-relation sequence generator of the Gold code
Platform: |
Size: 1024 |
Author: bxq |
Hits:
«
1
2
...
8
9
10
11
12
1314
15
16
17
18
...
31
»