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-direct sequence spread spectrum communication system BER simulation analysis PN code synchronization method of comparison and Simulation 下载
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PN序列生成器，比较好的demo-PN sequence generator, and better demo 下载
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使用matlab编写的PN序列函数，用来生成PN序列，里面有大量说明-use Matlab prepared by the PN sequence function, used to generate PN sequence, there are extensive notes 下载
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基于PN序列的同步仿真链路（simulink+m files），收端算法为接受序列与本地序列求滑动相关。-PN sequence based on the synchronous Link Simulation (Simulink m files), Algorithm-admission to accept the sequence with the local demand sliding related sequences. 下载
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一个产生PN15伪随机序列并模拟噪声干扰和统计误码率的通讯系统仿真程序，主要实现了PN序列的同步算法和实时误码统计-PN15 have a pseudo-random sequence and noise simulation and statistical error rate communications system simulation program, the main PN sequence of real-time synchronization algorithm and error statistics 下载
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用来产生M序列的MATLAB程序，其周期为31位，结合pn.m可生成GOLD序列。-used to produce M sequence MATLAB, cycle 31. combining pn.m GOLD sequences can be generated. 下载
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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 based on the wavelet transform digital watermark code, the embedded watermark with a random sequence late pn 下载
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在QuartusII运用ＡＨＤＬ语言，首先设计出PN发生器来产生一个11位的数据流在整个周期内有效数据有 =2047位；再设计状态机用来检测串行数据流中的序列。运用两个个计数器分别对PN码计数以及序列出现的次数计数。改变ＰＮ码结构可以作为通用数列检测器- 下载
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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-direct sequence spread spectrum system is the originator directly with the high rate of spread spectrum signal coding to the expansion of the spectrum, and the resumption end with the same spread-spectrum coding for despreading spread spectrum signal so that the original signal reverted to a spread-spectrum approach. Direct-sequence system used in the coding sequence is usually pseudo-random sequence, or a pseudo-noise (PN) code. To the transmission of digital information by the following figures into binary sequence, it, and pseudo-random sequence-two together (or multiplication) into a composite code modulation to Carrier. In the direct-sequence system usually right carrier for binary phase shift keying modulation (BPSK). When spread spectrum modulation after the antenna launched, in the 下载
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直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩,恢复原始信息数据。-direct sequence spread spectrum communication can be effective resistance from the channel narrowband interference. In a DSSS system. Spreading through the sequence of pseudo-noise (PN) to send the right message to data modulation to achieve. On the receiving end, the original pseudo-noise sequence and the received signal may be related Operational narrowband interference signal DS extended to the whole band, make tampering equivalent to a lesser extent than the flat spectrum of noise; Meanwhile, the DS signal disspreaded restore the original data. 下载
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