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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-
ppd
- 发射波形是矩形波,调制方式是DBPSK调制,采用非相干解调。-rectangular wave is launched wave modulation is DBPSK modulation, the non-coherent demodulation.
BPSKmodanddemod
- BPSK的调制与解调程序 BPSK的调制与解调程序
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.
chengxu3
- 有关模拟调制的matlab程序--复读调制,AM信号的解调。-Matlab simulation of modulation-related procedures- repetition modulation, AM signal demodulation.
soulfly
- 编写MATLAB的M文件,用该文件对采用包络检测法解调的2ASK系统的抗噪声性能进行1000个符号的蒙特卡罗法仿真,画出误码率与信噪比之间的关系曲线,其中信噪比的取值为r=0dB,2Db,4Db,6dB……10Db,同时画出误码率与信噪比的理论曲线,其中信噪比的取值为r=0dB,0.1dB,0.2dB,0.3dB……10Db-The preparation of MATLAB M-file, use the document on the use of envelope detection de
LLR_demodulation
- 将多级调制时, 映射到同一符号的不同比特具有不同可靠性的特性引入软输出高阶解调算法中, 推导出一套 简单易行的通用算法, 使得在任何格雷映射方式下, 都能够使用一组相同的两级递推公式计算比特软判决信息。提供了一种 具有低复杂度的通用的高性能软输出高阶解调算法。-Multi-level modulation, the symbols are mapped to the same bit different with different characteristics of the reli
bpsk
- 此程序可以完成2bpsk信号的调制与解调的仿真。-This procedure can be completed 2bpsk signal modulation and demodulation of the simulation.
pm
- 利用matalab中的simulink的仿真做的pm的调制与解调 非常的有用-Matalab use of simulation in simulink to do the modulation and demodulation pm very useful
am_demod
- 自己录制声音,然后对录制后的声音调制,然后再解调-Recording their own voices, and then, after recording the voice of the modulation, demodulation and then
8psk
- 1、 产生等概率且相互独立的二进制序列,画出波形; 2、产生均值为0,方差为1的加性高斯随机噪声; 3、进行8PSK调制,画出波形; 4、进行蒙特卡罗分析; 5、解调8PSK,画出眼图。-1、Produce equal probability and independent of each other binary sequence, draw waveform 2、Generate mean 0, variance 1 of the additive Gaussian ra
QAM
- QAM的调制一种调制解调matlab仿真,欢迎大家下载,多多支持-QAM modulation a kind of modulation and demodulation matlab simulation, welcome to download, will support
BFSK
- 编写源程序,用matlab实现bpsk的调制解调-Write source code with matlab achieve bpsk the modem
dct
- 在一个256*256像素的图像中嵌入水印,并经过高斯白噪声,最后在解调出原始图像与水印图像-In a 256* 256 pixel image embedded watermark, and after a Gaussian white noise, and finally demodulate the original image and watermark image
Resonant-demodulation-
- 用共振解调法实现轴承的内圈、故障外圈故障、滚动体故障的自动识别-Use resonant demodulation method to implement bearing the inner circle, fault fault, between the fault of roller automatic identification.
msk111
- fsk的调制以及相干,非相干和过零解调完整的源代码-achieve the modulation and demodulation of MSK
jiagaosibaizaoshengzip
- 本程序产生二次雷达的应答信号,加高斯白噪声,解调成功。-This procedure generated a response of the secondary radar signal plus Gaussian white noise successful demodulation.
lab2
- 16QAM - OFDM 信号的调制及解调-16QAM- OFDM signal modulation and demodulation
FM_cos
- FM调制解调,以余弦信号作为调制信号,较好的程序供大家参考哦-FM modulation and demodulation, cosine signal as a modulated signal, better procedures for your reference Oh
AM_DSB_SSB-simulation
- 1、练习使用Multisim仿真软件。 2、设计AM、DSB、SSB三种调幅和解调的仿真电路,并利用计算机仿真软件Multisim对所设计的仿真电路进行仿真分析: -Practice using Multisim simulation software. 2, the design of AM, DSB, SSB three kinds of amplitude modulation and demodulation simulation circuit and the use of c