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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-
chengxu7
- 有关载波调制的数字传输的MATLAB程序---载波幅度、相位、频率调制。-Related to modulation of the digital transmission of the MATLAB program--- carrier amplitude, phase, frequency modulation.
PSK
- PSK信号载波相位符号定时联合估计,载波环采用判决反馈环，去除噪声平方损耗，定时模块采用早迟原理， 里边有详细的注释，希望对大家有用。点击即可运行。-PSK signal carrier phase joint estimation of symbol timing, carrier ring using decision feedback loop, remove the noise square loss, using early-late timing module principle
Technologyofcarriertrackingforhighdynamicsignalsba
- 高动态给载波的跟踪带来了很大的困难,本文研究采用锁频环( FLL) 和锁相环( PLL) 相结合的方法来实现 载波跟踪-High dynamic to the carrier' s tracking has led to great difficulties, this paper uses frequency-locked loop (FLL) and phase-locked loop (PLL) methods to achieve a combination of carrie
2ask
- 本文件是2ask仿真代码。振幅键控是利用载波的幅度变化来传递数字信息，而频率和初始相位保持不变。-This document is 2ask simulation code. Amplitude shift keying of the carrier amplitude variation is the use of digital information to transmit, and the frequency and initial phase remains unchanged.
4psk
- QPSK即四进制移向键控（Quaternary Phase Shift Keying），它利用载波的四种不同相位来表示数字信息，由于每一种载波相位代表两个比特信息，因此每个四进制码元可以用两个二进制码元的组合来表示。-I.e., quaternary toward keying QPSK (Quaternary Phase Shift Keying), which uses the carrier to represent the four different phases of digital
dg073
- matlab implements five gray correlation degree computing model, Power System Transient Stability Program, can be transient stability, Suppressed carrier type differential phase modulation.
bksnh
- Suppressed carrier type differential phase modulation, allan FOG output error variance analysis, Spectral methods of computational fluid dynamics flow of some of the overall stability of the phenomenon.
feng_it33
- There are detailed notes, Suppressed carrier type differential phase modulation, Can realize the two-dimensional data clustering.
vp661
- Continuous phase modulation signal (CPM) to produce, Including single sideband, double sideband, suppressed carrier and quadruple, Use of natural gradient algorithm.