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PSKmodulation
- 提出一种全新的子载波调制方式盲识别算法,该算法利用ＯＦＤＭ子载波组的统计特性,然后通过推导得到新的基于混合高阶矩的特征量,使得到新的特征量不受信噪比、载波频偏与相位偏移的影响。 -Proposed a new sub-carrier modulation count Blind Identification Method, the method using the statistical characteristics of the OFDM sub-carrier group, an
SPWM_IQmath
- dspspwm波形分析,在对三相正弦波形进行脉宽调制时，主要的参数有： 1.载波比N=Fr/FS 其中：Fr为载波频率；FS为调制波频率 2.调制度 M=US/Ur 其中：US为调制波幅值；Ur -dspspwm waveform analysis, when the three-phase sine wave pulse width modulation, the main parameters are: 1 carrier ratio N = Fr/FS where: F
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
ici3
- 使用ICI自我相消的方法條件下，來觀察使用訊號與干擾的大小CIR(載波干擾比值)的變化-Consumers using the ICI method of self-phase conditions, to observe the use of signal and interference with the size of the CIR (Carrier to Interference ratio) changes in
ZigBeeIEEE
- The implementation was built on Matlab/Simulink using fundamental components in Simulink to demonstrate how reliably complex modulation schemes can be built, cost effectively and efficiently [5]. The design of ZigBee transmitter using MSK mod
SPWM
- 产生三相SPWM波形 EVA下面的通用定时器T1工作于连续增/减计数模式，产生三角载波，载波频率为 3000Hz，载波比N=60，因此调制波形正弦波的频率为50Hz。本实验中，调制度为 0.8。-Generate three-phase SPWM waveform EVA following general-purpose timer T1 work in continuous up/down counting mode, generate triangular carrier, the car
PLL_matlab
- 二阶和三阶锁相环实现costas环，能够实现载波跟踪-Second and third order phase-locked loop to achieve costas, to achieve carrier tracking
paper5
- LTE论文（Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems）-Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems
alamouti2x2
- Many papers have extended STBC design to frequency-selective channels. In [6], STBC has been proposed for single-carrier transmission, which can achieve maximum space-delay diversity in rich scattering channels. The transmission formats proposed
modulation-of-barker
- this sorce code for the modulation of phase codes that is barker codes in which barker codes are message signal and the carrier is the frequency modulated wave-this is sorce code for the modulation of phase codes that is barker codes in which barker
singlephasecarrierPWM
- 二极管钳位式三电平逆变电路，单项载波层叠调制-single phase carrier pwm
QpskinRayleighfading
- While Multiple Phase Shift Keying (M-PSK) is much more spectrally efficient, the greater the number of smaller phase shifts, the more difficult the signal is to demodulate in the presence of noise. The benefit of M-PSK is that the constant carrier
satellite
- Quadrature Amplitude Modulation (QAM) The creation of symbols that are some combination of amplitude and phase can carry the concept of transmitting more bits per symbol further. This method is called quadrature amplitude modulation (QAM). For
74hc4046
- 本设计根据锁相环原理，通过两片CD4046搭接基本电路来实现FM调制/解调电路的设计，将调制电路的输出信号作为解调电路的输入信号，最终实现信号的调制解调。原理分析，我们得到的载波信号的电压 大于3V，最大频率偏移 5KHz，解调电路输出的FM调制信号的电压 大于200mV可以看出我们的具体设计符合设计指-The design phase locked loop principle, by two overlapping basic circuit to achieve CD4046 FM mod
Offset-CS-Algorithm-in-LTE
- ：LTE(Long Term Evolution，长期演进)系统中的小区初始搜索过程通过分别检测主同步信号(Primary Synchronization Signal，PSS)和辅同步信号(Secondary Synchronization Signal，SSS)来完成，搜 索结果包括小区组ID、符号定时、频偏估计、组内小区ID以及帧定时[1]。然而，若接收信号 1IDN 2IDN 中存在整数倍频偏，则由于时域的相位旋转，主
matlabSTFT
- 对三种雷达信号调制类型的识别，包括单载频 线性调频和相位编码，并做时频分析-The identification of three kinds of radar signal modulation, including single carrier linear frequency modulation and phase encoding, and time-frequency analysis
costas
- 基于costas环路的载波同步，使收发时钟频率和相位一致，环路包括四个部分乘法器和低通滤波、鉴相器、环路滤波器和数字振荡器组成-Based on the carrier synchronization of Costas loop, the frequency and phase of the transmit and receive clock is the same. The loop consists of four parts, including the multiplier and
RA
- ra_snr_gui.m 作用：统计不同信噪比下，五种信号的峰值旁瓣比RA和低高频均值比RM，绘制结果，参考图3.11和3.12 DFCW_RA_SNR.m 作用：产生正交离散频率编码信号，并计算峰值旁瓣比RA和低高频均值比RM LFM_RA_SNR.m 作用：产生线性调频信号，并计算峰值旁瓣比RA和低高频均值比RM OFDMLFM_RA_SNR.m 作用：产生正交频分线性调频信号，并计算峰值旁瓣比RA和低高频均值比RM PC_RA_SNR.m 作用：产
QPSK
- 使用matlab对无线通信中重要的调制技术QPSK进行了仿真设计，包括调制，信道环境模拟，解调，最重要的是解决了无线通信中的载波同步问题，对频偏和相偏进行了估计，也实现了码元同步。-Use matlab important wireless communication QPSK modulation technique simulation design, including modulation, channel environment simulation, demodulation, th