搜索资源列表
dsnonoise
- 直接序列扩频系统是在发端直接用具有高码率的扩频编码去扩展信号的频谱，而在收端用相同的扩频编码进行解扩使扩频信号还原为原始信号的一种扩频方式。直接序列系统中用的编码序列通常是伪随机序列或叫伪噪声（PN）码。要传送的信息经数字化后变成二元数字序列，它和伪随机序列模二相加(或相乘)后变成复合码去调制载波。在直接序列系统中通常对载波进行二进制相移键控调制(BPSK)。当扩频调制后由天线发射出去，在接收机中要有一个和发射机中的伪随机码同步的本地码，对接收信号进行解扩，解扩后的信号送到解调器取出传送的信息-
chengxu9.rar
- 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.
wavwatermark1
- 在一段音频序列中，利用混沌序列嵌入图像水印-In an audio sequence, the use of chaotic sequences embedded in image watermarking
dds
- 直接序列扩频码的仿真，介绍了通过PN码实现扩频系列的设计和运用-Simulation of direct-sequence spread-spectrum code, introduced by PN code to achieve the design and use of spread spectrum
spatial-block-PN-watermarking
- 未经任何变化的原始图像上分块嵌入水印信息，且用伪随机序列作为水印，空域图像水印。-Without any change in the original image block embedded watermark information, pseudo-random sequence as a watermark, the airspace image watermark.
SpredSpectrum_BPSK
- The principle is simple, just multiply the data sequence with the PN Sequence Generator for spread signal.
jwyoes
- 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,
obhewxr
- 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
poiqbtr-dimensional-middleware
- 这是基于小波变换的数字水印代码,在嵌入的水印加上一个pn尾随机序列-This is a digital watermark based on wavelet transform code, plus a pn in the embedded watermark random sequence
slzding
- 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,)
comearison
- 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)