Search - scrambling code

[matlab] xinyi

Description: ·Matlab加扰解扰仿真系统，可以观察加解扰前后信号的时域和频域波形，有助于理解扰码的概念和解扰的过程-scrambling and de-scrambling Matlab simulation system Encryption can be observed around the signals in time domain and frequency domain waveforms scrambler help understand the concept of the process and Descramble
Platform: | Size: 7168 | Author: | Hits:

[Picture Viewer] Arnold_Matlab_code

Description: Arnold图像置乱Matlab代码％％ -------------------------------------------------------------------- ％％％ Function: Arnold图像置乱％ Arnold: x =(x+y) mod N, y =(x+2y) mod N ％变换周期(N,M): (128,96),(256,192),(512,384) ％ Argument: dPSNR: 置乱后PSNR ％ outImg: 置乱后输出图像％ inImg: 输入图像％ iTimes: 置乱次数％ Version: 1.01.20070409 ％％ -------------------------------------------------------------------- -Arnold image scrambling Matlab code----------%%---------------------------- %%% Function : Arnold image scrambling% Arnold : x = (x y) mod N, y = (x 2y) mod N% transform cycle (N, M) : (128,96), (256,192), (512,384)% Argument : dPSNR : Scrambling after PSNR% outImg : Scrambling% of the output image inImg : input image% iTimes : Scrambling frequency% Version : 1.01.20070409-------------------------%%----------------------------------------
Platform: | Size: 1024 | Author: kuhasu | Hits:

[Other] SC-DSC

Description: 数字通信系统的设计及其性能和所传输的数字信号的统计特性有关。所谓加扰技术，就是不增加多余度而扰乱信号，改变数字信号的统计特性，使其近似于白噪声统计特性的一种技术。这种技术的基础是建立在反馈移位寄存器序列（伪随机序列）理论之上的。解扰是加扰的逆过程，恢复原始的数字信号。如果数字信号具有周期性，则信号频谱为离散的谱线，由于电路的非线性，在多路通信系统中，这些谱线对相邻信道的信号造成串扰。而短周期信号经过扰码器后，周期序列变长，谱线频率变低，产生的非线性分量落入相邻信道之外，因此干扰减小。在有些数字通信设备中，从码元“0”和“1”的交变点提取定时信息，若传输的数字信号中经常出现长的“1”或“0”游程，将影响位同步的建立和保持。而扰码器输出的周期序列有足够多的“0”、“1”交变点，能够保证同步定时信号的提取。 -digital communication system design and performance and the transmission of digital signals on the statistical characteristics. The so-called scrambling technology is not to increase the degree to disrupt redundant signal, digital signal change the statistical properties it is similar to white noise statistical characteristics of a technology. This technology is based on feedback shift register sequences (pseudo-random sequence) of the above theory. Decryption is the reverse of the scrambling process, the restoration of the original digital signal. If the digital signal is cyclical, the signal spectrum of discrete lines, as the nonlinear circuit, in multi-channel communication system, these lines of the adjacent channel signal causing crosstalk. And the short-cycle signal after scrambling
Platform: | Size: 113664 | Author: 葛岭泉 | Hits:

[Special Effects] arnold

Description: 基于Arnold 变换的图像置乱Matlab 程序-Based on Arnold transform image scrambling Matlab procedures
Platform: | Size: 1024 | Author: lagu | Hits:

[source in ebook] randomization

Description: DVB-C中的扰码源程序，可以不用修改直接使用-DVB-C source code of the scrambling code, you can not modify the direct use of
Platform: | Size: 1024 | Author: 聂君 | Hits:

[Console] scram

Description: 这个算法，可以完成扰码的功能，可以根据实际的情况，稍作修改完成各种扰码功能，已通过验证-This algorithm can complete the functions of scrambling code, based on the actual situation, with some slight modifications to complete a variety of scrambling code function has been validated
Platform: | Size: 156672 | Author: zhangmeina | Hits:

[Communication-Mobile] scramble_code

Description: 扰码的产生MATLAB程序。用于移动通信等领域的扩频加扰，区分用户。-Scrambling code for selecting the MATLAB program. For mobile communications in areas such as spread spectrum scrambling, to distinguish between users.
Platform: | Size: 1024 | Author: 冯兴乐 | Hits:

[Mathimatics-Numerical algorithms] src

Description: 图像置乱代码，包括： Arnold变换、Fibonacci变换、面包师变换、Hilbert曲线、Zigzag曲线、混沌映射变换、生命游戏、伪随机数、有限整数域上的拟仿射变换(QATLIG)等。 -Image Scrambling code, including: Arnold transform, Fibonacci transformation, baker transformation, Hilbert curve, Zigzag curve, chaotic mapping transformation, life game, pseudo-random number, finite integer domain to be affine transformation (QATLIG) and so on.
Platform: | Size: 266240 | Author: asaonan | Hits:

[3G develop] mfiles

Description: 本程序实现802.11a中扰码的生成,语言为matlab-802.11a realize this process in the generation of scrambling code, language for matlab
Platform: | Size: 1024 | Author: 徐小传 | Hits:

[Other] scramble

Description: 多路并行扰码，比单路分别扰码节省大量资源，速度没有下降。-Multi-Channel Parallel scrambling code, respectively, than the single scrambling code to save a lot of resources, speed did not decline.
Platform: | Size: 2048 | Author: BrivaMa | Hits:

[VHDL-FPGA-Verilog] CPLD_raoma

Description: 基于CPLD的扰码与解扰码器的设计，扰码用M序列实现，m序列级数和频率可选-CPLD based on the scrambling code and Descrambling codec design, scrambling code sequence with M realize, m sequence of series and frequency optional
Platform: | Size: 39936 | Author: 梁奔山 | Hits:

[Streaming Mpeg4] csa_source

Description: 一个加扰源码，应用于DVB领域，通用的加扰算法-A scrambling code used in DVB areas, common scrambling algorithm
Platform: | Size: 11264 | Author: johnson | Hits:

[Communication-Mobile] scrambling

Description: Scrambling source code for CDMA
Platform: | Size: 1024 | Author: mehdi | Hits:

[VHDL-FPGA-Verilog] scramble

Description: 通信用加扰码VHDL电路，解决光传输过程中的连零和连一码的出现。-Communication scrambling circuit VHDL Code
Platform: | Size: 1024 | Author: 江山 | Hits:

[3G develop] ScramblingcodeGeneration

Description: 文件中的函数可以用来产生扰码，通过形成几个序列后映射的方法，实现扰码的形成。-File function can be used to generate scrambling code sequence through the formation of several post-mapping method to achieve the formation of scrambling code.
Platform: | Size: 1024 | Author: 张军 | Hits:

[Documents] scrambling-downlink

Description: scrambling code generation
Platform: | Size: 1024 | Author: thanglk | Hits:

[VHDL-FPGA-Verilog] CCPCH_DPCH

Description: WCDMA扰码识别，VHDL语言编写-WCDMA scrambling code identification, VHDL language
Platform: | Size: 152576 | Author: 阿甘 | Hits:

[Graph program] 1

Description: 图像处理，RS编码，纠错码这个单元对每个扰码后的传输数据帧,包括同步字节进行截短的RS(204,188)编码.RS编码时, 在信息位前添加51字节的“0”再进入RS(255,239) 编码器,编码后再截去这些字节.RS(255,239)编码 -Image processing, RS coding, error correction code for each scrambling code of this unit after the transmission of data frames, including the sync byte truncated RS (204,188) code. RS encoding, the information bit before adding 51 bytes " 0 " and then enter the RS (255,239) encoder, encoding the bytes and then amputated. RS (255,239) coding
Platform: | Size: 1024 | Author: zrq | Hits:

[3G develop] TD-SCDMA-Scrambling-module

Description: 它详细介绍了TD-SCDMA系统扰码模块所需要用的主要符号、基本公式、算法流程。其中TD-SCDMA扰码分配算法是最重要的一部分-It details the TD-SCDMA system scrambling code modules required to use the main symbols, the basic formula, algorithm flow. Wherein the TD-SCDMA scrambling code allocation algorithm is the most important part of the
Platform: | Size: 359424 | Author: John | Hits:

[Special Effects] Arnold-scrambling-code

Description: 目前比较主流的图像加密方法主要为Arnold置乱图像加密方法，本代码用于将一副图像通过Arnold置乱，生成之乱后的图像，以便达到图像加密的功能。-The current image encryption method more mainstream mainly Arnold scrambling image encryption method, the code for an image through the Arnold scrambling, image generation rebellion, in order to achieve the function of image encryption.
Platform: | Size: 4096 | Author: 王枫少 | Hits:

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