Description: 直接序列扩频通信中PN码同步技术的研究，对于研究伪随机序列和扩频通信的人很有帮助哦、-Direct sequence spread spectrum PN code synchronization communication technology, the study of pseudo-random sequence spread spectrum communication and people very helpful Oh, Platform: |
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Author:caidan |
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Description: 本论文围绕伪随机码的捕获展开，主要研究了直接扩频通信系统的性能特点、
伪随机码的产生与相关性、重点是伪随机码的捕获，提出了一种新型的捕获方法
——双向滑动捕获法，并针对双向滑动捕获法进行了一些理论分析和探讨。-In this paper, around the pseudo-random code capture started, mainly to study the direct spread spectrum communication system performance characteristics, pseudo-random code generation and correlation, with a focus on the capture of pseudo-random code, a new type of capture method- two-way Sliding capture and recapture method for two-way slide for a number of theoretical analysis and discussion. Platform: |
Size: 575488 |
Author:李永 |
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Description: 直接扩展频谱通信系统的伪随机码相位和频偏的串行捕获程序。-Direct spread spectrum communication system of pseudo-random code phase and frequency offset of the serial capture program. Platform: |
Size: 123904 |
Author:quark |
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Description: 伪随机序列在扩频通信、流密码、信道编码等领域有着十分广泛的应用。文通过对伪随机m序列的编码和译码算法进行的MatLab语言仿真，验证了伪随机序列码的编码和译码算法，丰富了伪随机序列的实现方法，并提供了源代码。-Pseudo-random sequence in the spread spectrum communication, stream cipher, in areas such as channel coding has a very wide range of applications. Through the pseudo-random sequence m of encoding and decoding algorithm for the MatLab language simulation code pseudo-random sequence of coding and decoding algorithm, has enriched the realization of pseudo-random sequence method, and provides the source code. Platform: |
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Author:Navy2008_CHINA |
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Description: ，用MATLAB实现快跳频通信系统的仿真。主要应用了SIMULINK和COMMUNICATION BLOCKETS两个模块。整个设计包括了信源产生部分、发送部分、跳频调制部分、信道部分、接收部分和结果分析部分共六个模块，核心技术是伪随机序列的产生和频率合成器的设计，而关键技术是收发两端的伪随机码元的同步。伪随机码的产生用S－函数编程来开发自己的SIMULINK模块。同步的实现是收发两端采用相同的扩频脉冲触发。而且在设计中每个模块都采用了模块封装技术，从而简化了框图结构-Using MATLAB to achieve fast frequency-hopping communication system simulation. The main use of SIMULINK and COMMUNICATION BLOCKETS two modules. The whole design, including part of the generated source, sending part of some frequency-hopping modulation, channel of the receiving part and the results of analysis of part of a total of six modules, the core technology is the emergence of pseudo-random sequence and frequency synthesizer design, and the key technology is the transceivers at both ends of the pseudo-random synchronization symbol. Pseudo-random code generated by S-function programming to develop their own modules SIMULINK. Synchronization is used to send and receive ends of the same spread-spectrum pulse trigger. But also in the design of each module using the module packaging technology, which simplifies the structure of the diagram Platform: |
Size: 68608 |
Author:笑笑生 |
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Description: 扩频通信中用伪随机码对信息数据进行扩频，实现频谱扩展！-Spread spectrum communication using pseudo-random code spreading of information data to realize the expansion of the spectrum! Platform: |
Size: 1024 |
Author:fengyanfang |
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Description: 伪随机码或称PN码，是扩频通信中不可缺少的一种序列。扩频通信，简单的说来就是通过一组相关性很强的伪随机序列，使原有的信号按照伪随机序列的特性出现。从波形上看，原有信号完全淹没于随机的噪声中，达到隐藏信号和抗干扰的目的。接受方只要有相同的伪随机序列，就可以通过伪随机序列很强的相关性将信号还原出来。而m序列，是扩频系统中最长用的伪随机序列。下面的代码就是基于matlab的生成m序列的代码，通过改变初始多项式的值，就可以生成不同阶数的m序列。-Pseudo-random code or PN code, spread spectrum communication is indispensable to a sequence. Spread spectrum communication, a simple to say that the adoption of a group of highly related to pseudo-random sequence, so that the original signal in accordance with the characteristics of pseudo-random sequence there. From the wave point of view, the original signal completely submerged in the random noise to hide the purpose of signal and interference. As long as the recipient has the same pseudo-random sequence, the pseudo-random sequence can be a strong correlation to restore the signal out. And m sequence spread spectrum system is the longest of the pseudo-random sequence used. The following code is generated based on m sequences of matlab code, by changing the value of the initial polynomial, we can generate a different order of the m sequence. Platform: |
Size: 1024 |
Author:fortunewjh0217 |
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Description: 扩频通信，从电磁波利用来看，与一般现有的常规通信方式完全不同。扩频通信利用伪随机编码把信息数据（窄带信号）的频谱进行扩展，形成宽带的低功率谱密度信号发射，使用不同的伪随机序列编码，不同通信用户可在同一频段、同一时间工作，互不影响或干扰极小地进行通信。-Spectrum, from the electromagnetic waves used term, and the general existing conventional means of communication is entirely different. Spread spectrum communication using pseudo-random code to the information data (narrowband signal) to extend the spectrum, the formation of low-power spectral density broadband signal transmission, using different pseudo-random sequence of coding, different communication users at the same frequency band, at the same time work, mutual does not affect or interfere with a very small way to communicate. Platform: |
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Author:clinfeng |
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Description: 实验讨论的CDMA通信系统的仿真，采用的是直扩方式，信息没有经过调制，伪随机码采用的是63位GOLD序列.本课程的目的是熟悉CDMA通信系统的构架,了解m序列和gold码的软件实现, 以及用gold序列实现扩频和解扩,最后了解整个系统的误比特率与哪些因素有关。
-Experiments discussed in CDMA communication system simulation, using the DS method, the information has not been modulated, pseudo-random code is used in 63 GOLD sequence. The purpose of this course are familiar with CDMA communication system architecture, understand and gold code sequence m software implementation, and reconciliation with gold sequence spread spectrum to achieve expansion, and finally understand the whole system bit error rate with which factors. Platform: |
Size: 66560 |
Author:daming |
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Description: 扩频通信系统仿真 ——系统将基带信号（即信息）的频谱扩展至很宽的频带上，然后再进行传输，即将欲传输的信息数据用伪随机序列编码调制，实现频谱扩展，然后通过信道编码发送出去；接收端采用与发送端完全相同的伪随机序列作为本地解扩信号进行相关处理，以恢复信息，最后进行解调，完成整个系统的接收。-Simulation of spread spectrum communication system- the system baseband signal (ie, information) be extended to a wide spectrum of frequency bands, and then transferred, will want to use transmitted information data sequence of pseudo-random code modulation, to achieve expansion of the spectrum, and then sent channel coding receiver and transmitter use the same pseudo-random sequence as related to the local despreading signal processing, in order to restore the information, the final demodulation, the receiver to complete the system. Platform: |
Size: 8192 |
Author:wangmin |
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Description: M文件以及simulink产生伪随机码，是M序列，可在扩频通信中应用。-M files and simulink pseudo random code, is the M series, available in the spread spectrum communication applications.
Platform: |
Size: 8192 |
Author:施骏 |
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Description: 伪随机码或称PN码，是扩频通信中不可缺少的一种序列。扩频通信，简单的说来就是通过一组相关性很强的伪随机序列，使原有的信号按照伪随机序列的特性出现。-Said pseudo-random code or PN code, spread spectrum communication is an indispensable sequence. Spectrum, simple to say is highly relevant by a group of pseudo-random sequence, so that the original signal in accordance with the characteristics of pseudo-random sequence appears. Platform: |
Size: 1024 |
Author:郭云 |
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Description: 在直接序列扩频通信系统中，伪随机序列的相位调制-Pseudo-random sequence of phase modulation in direct sequence spread spectrum communication system Platform: |
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Author: |
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Description: 在MATLAB环境下，直接序列扩频通信系统的仿真，由伪随机码，在进行BPSK调制。-In the MATLAB environment, the simulation of direct sequence spread spectrum communication system, by a pseudo-random code, during the BPSK modulation. Platform: |
Size: 2048 |
Author:赵鹏磊 |
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Description: cdma是在数字技术的分支——扩频通信技术上发展起来的一种崭新而成熟的无线通信技术。即将需传送的具有一定信号带宽信息数据，用一个带宽远大于信号带宽的高速伪随机码进行调制，使原数据信号的带宽被扩展，再经载波调制并发送出去。接收端使用完全相同的伪随机码，与接收的带宽信号作相关处理，把宽带信号换成原信息数据的窄带信号即解扩，以实现信息通信。-cdma wireless communication technology in a new and sophisticated digital technology branch- spread-spectrum communication technology developed. The data will be transmitted with a certain signal bandwidth information, bandwidth of the signal with a bandwidth much larger than the high-speed pseudo-random code is modulated, so that the bandwidth of the original data signal to be extended, and then via the carrier modulation and sent. Receiver use exactly the same pseudo-random code, for a correlation processing with the received bandwidth signal, the wideband signal is replaced with the original information data on narrowband signal despreading, in order to achieve information communication. Platform: |
Size: 14336 |
Author:jingjing |
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Description: 基于matlab的直接序列扩频通信系统仿真。这种技术是将要发送的信息用伪随机码（PN码）扩展到一个很宽的频带上去，在接收端，用与发端扩展用的相同的伪随机码对接收到的扩频信号进行相关处理，恢复出发送的信息。-matlab direct sequence spread spectrum communication system based on. This technology is an extension of information to be transmitted with a pseudo-random code (PN code) to a wide frequency band up at the receiving end, with the spread spectrum signal with the originating extension with the same pseudo-random code of the received correlation processing recovers the transmitted information. Platform: |
Size: 18432 |
Author:city |
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Description: CDMA是码分多址的英文缩写(CodeDivisionMultipleAccess)，它是在数字技术的分支--扩频通信技术上发展起来的一种崭新而成熟的无线通信技术。CDMA技术的原理是基于扩频技术，即将需传送的具有一定信号带宽信息数据，用一个带宽远大于信号带宽的高速伪随机码进行调制，使原数据信号的带宽被扩展，再经载波调制并发送出去。(CDMA is the abbreviation of Code Division MultipleAccess. It is a new and mature wireless communication technology developed on the branch of digital technology, spread spectrum communication technology. The principle of CDMA technology is based on spread spectrum technology, which uses a high-speed pseudo-random code whose bandwidth is much larger than the signal bandwidth to modulate the data which needs to be transmitted, so that the bandwidth of the original data signal can be expanded, and then modulated by carrier wave and sent out.) Platform: |
Size: 12288 |
Author:阿明明阿 |
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Search - pseudo-random code Spread Spectrum Communication