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Description: 关于扩频通信系统的发送端及接收端的vc仿真。pn码产生-SS
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Size: 1024 |
Author: jjala5648xin |
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Description: PN序列（Pseudo-noise Sequence）伪噪声序列.
这类序列具有类似随机噪声的一些统计特性，但和真正的随机信号不同，它可以重复产生和处理，故称作伪随机噪声序列。PN序列有多种，其中最基本常用的一种是最长线形反馈移位寄存器序列，也称作m序列，通常由反馈移位寄存器产生。-PNSeqGenerator,This class of sequences with some statistical properties similar to random noise, but the real random signal is different, it can repeat the generation and processing, the so-called fake random noise sequence. There are many kinds of PN sequences, among them, one of the most commonly used is the most linear feedback shift register sequence, which is also called as m sequence, which is usually generated by feedback shift register.
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Size: 1024 |
Author: liang |
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Description: 关于扩频通信系统的发送端及接收端的vc仿真。pn码产生-SS
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Size: 1024 |
Author: tyamaanjuy |
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Description: 软件介绍
采用的是 CVS 20030118 版本，包含了 PN .723 安全补丁 3，包含新的主题样式引擎 Xanthia，采用 Smarty 技术，如果使用，会加快网站速度，包含很多第三方模块和区块，包含 PNphpBB2 模块。所见即所得编辑器汉化并不完全-Software introduction
Using is CVS version 20030118, contains the PN.723 security patch 3, contains new theme style engine Xanthia, using Smarty technology, if used, will accelerate the speed of website, contains many third party modules and blocks, including module PNphpBB2. WYSIWYG editor is not completely finished
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Size: 6355968 |
Author: yeathee |
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Description: ofdm 传输与接受的各项例子
-OFDM Receiver
1. Initalize the USRP setting the RX parameters and moving the LO outside the transmission band.
2. Generate random data bits (PN Sequence) (125 bits)
3. Use the Van De Beek algorithm to detect the cyclic prefix locatoins for synchronization and estimate frequency offset
4. Remove the cyclic prefix
5. Remove the frequency offset the incoming signal
6. Compute the FFT convertin the time domain OFDM symbol to the frequency domain
7. Separate data bits, reference bits, and remove zero padding
8.Compute equalization coefficients using a linear fit for both I and Q based on reference symbols
9. Apply the equalization to the data symbols
10. Convert data symbol mapping back to data bits
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Size: 460800 |
Author: kai |
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Description: This packet is a IS-95 baseband simulation for 1 data channel of 9.6 KBps rate. The simulation is written for static channel and AWGN noise.
The packet include:
1) Packet Builder (Viterbi Encoding, Interleaver, PN generation)
2) Modulator (RRC filter)
3) Demodulator (Matched Filter, RAKE receiver)
4) Receiver (HD or SD) (Deinterleaver, Viterbi Decoder).
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Size: 4144128 |
Author: rizwan pasha |
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Description: OMRON连接西门子Profinet通信手册,-OMRON of PN connection Siemens Communication Manual
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Size: 1725440 |
Author: lilong |
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Description: PN VE 6 9 Platform 03-PN VE 6 9 Platform 0311
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Size: 389120 |
Author: K |
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Description: 本总体方案完成国标GB20600-2006数字电视地面广播传输系统基带部分功能。 输入数据码流经过扰码器（随机化）、前向纠错编码（FEC），然后进行比特流到符号流的星座映射，再进行交织后形成基本数据块，基本数据块与系统信息组合（复用）后并经过帧体数据处理形成帧体，帧体与相应的帧头（PN序列）复接为信号帧（组帧），经过基带后处理转换为输出信号（8MHz带宽内）。该信号经变频转换为射频信号（UHF和VHF频段范围内）。用C程序设计了图形交互界面，可以在界面上直接设置调制参数。-The overall program completion GB GB20600-2006 digital terrestrial television broadcasting transmission systems baseband function. The input data stream through the scrambler (randomization), forward error correction (the FEC), then the symbol constellation mapping bitstream to the stream, and then after forming the basic block interleaving, the basic data block and information combined system ( multiplexing) after data processing and after the frame body forms a frame body, frame body with a corresponding header (PN sequence) multiplexed signal frame (framing), after post-processing baseband signal is converted to an output (internal 8MHz bandwidth). The signal is downconverted to a radio frequency signal (in the VHF and UHF frequency range). C program designed graphical interface, you can set modulation parameters directly on the screen.
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Size: 25513984 |
Author: 高星 |
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Description: 基于扩频通信的程序，主要是实现了pn编解码、调制、去噪、时延等功能，功能基本都实现了。-Based on the program spread spectrum communication, mainly to achieve a pn encoding and decoding, modulation, de-noising, delay and other functions, basic functions are realized.
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Size: 1024 |
Author: yipeng |
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Description: 实现了（7,3）PN码的产生，仿真了径数和每径衰落可控的多径信道。-(7,3) PN codes are generated, and the multipath channels with diameter and fading control are simulated.
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Size: 3072 |
Author: 徐景鑫 |
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Description: 超清全面版，配置WINAVR的PN文档，希望大家能够喜欢-Full version of the ultra-clear, WINAVR PN configuration files, I hope you can like
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Size: 1718272 |
Author: Glory贞德 |
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Description: 问题描述
设Pn(x)和Qm(x)分别两个一元多项式。试编写程序实现一元多项式的加法运算。
基本要求
需要基于线性表的基本操作来实现一元多项式的加法运算
需要利用有序链表来实现线性表。
-Problem descriptionPn (x) and Qm (x), respectively, two unary polynomial.Try to write programs achieve one yuan polynomial addition operation. The basic requirementsBased on the basic operation of the linear table is needed to achieve one yuan polynomial addition operationNeed to use an orderly linked list to achieve linear table.
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Size: 1024 |
Author: 程悦 |
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Description: 排隊理論
產生exponential分布的 inter-arrival time，Mean 0.25, 0.5, 1, 2
1.統計並劃出Cumulative distribution曲線與其理論曲線
2.時間單位各為1、2、…20單位，分別統計各時間單位之arrival的個數，並劃出Pn(t) v.s t 與其理論值，n取0、1、2、3、4、5，λ取0.5。-Queuing theory produce exponential distribution of inter-arrival time, Mean 0.25, 0.5, 1, 2 1. Cumulative distribution statistics and draw the curve with its theoretical curve 2. Each unit of time is 1, 2, ... 20 units, respectively, each time statistics the arrival of the number of units, and draw Pn (t) vs t and its theoretical value, n take 0,1,2,3,4,5, λ is 0.5.
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Size: 265216 |
Author: 張瑀征 |
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Description: CXY 可用来验证：
1、不同FFT点数的结果*2/M 真实幅度（电压值）（第一二行图）
2、验证计算Ps,Pn及SNR的方法，通过构造加AWG噪声的信号来印证（第二三行图）
3、对比N在整周波和非整周波情况下的通过SNR观察频谱泄露效应（第三行图）-
CXY can be used to verify:
1, the result of different FFT points* 2/M true amplitude (voltage value) (first two lines)
2, verify the calculation of Ps, Pn and SNR method, by constructing the AWG noise signal to confirm (the second three lines)
3, contrast N observed in the case of full and non-circular waves through SNR spectrum leakage effect (the third line)
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Size: 1024 |
Author: 陈 |
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Description: 基于CDMA扩频通信技术的仿真，采用的调制方法是GMSK调制，模拟信道噪声，输出信噪比，说明CDMA扩频通信的抗噪性-
58/5000
Jīyú CDMA kuò pín tōngxìn jìshù de fǎngzhēn, cǎiyòng de tiáozhì fāngfǎ shì GMSK tiáozhì, mónǐ xìndào zàoshēng, shūchū xìn zào bǐ, shuōmíng CDMA kuò pín tōngxìn de kàng zào xìng
Based on the CDMA spread spectrum communication technology, the modulation method adopted is GMSK modulation, analog channel noise, output signal to noise ratio, which shows the noise immunity of CDMA spread spectrum communication
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Size: 1024 |
Author: 二妮子 |
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Description: 图像处理中衡量算法性能的标准，PN及PSNR值的计算。-
检测到：中文 » 英语
The standard of image processing algorithm performance, the PN and the calculation of the PSNR.
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Size: 2048 |
Author: gan |
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Description: 模拟电子电路 PN结的反向导电性 PN结的形成
PN结的正向导电性 电子、空穴的导电机理 - PN结的反向导电性, PN结的形成,
PN结的正向导电性 , 电子、空穴的导电机理
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Size: 17003520 |
Author: Jack Ma |
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Description: 基于PN序列的同步仿真链路,收端算法为接受序列与本地序列求滑动相关,-Simulation based on PN sequence synchronization of link, and receiving algorithm for sequence related to the local sequence and sliding,
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Size: 21504 |
Author: partkhej |
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Description: 直接序列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-Bit error rate of direct sequence spread spectrum communication system simulation analysis of the comparison of PN code synchronization method and simulation
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Size: 3072 |
Author: oicm@7074 |
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