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Qam16
- 16Qam的Matlab/Simulink仿真系统,包含匹配滤波,载波恢复,位定时恢复等个重要模块,加深对16Qam调制解调系统的理解-16Qam the Matlab / Simulink system, matched filtering, carrier recovery, rehabilitation Timing important module, the better modulation and demodulation system 16Qam understanding
OQPSK
- OQPSK的Matlab/Simulink调制解调仿真系统,包括匹配滤波,载波恢复,定时恢复等重要模块,可以观察眼图,仿真误码率,帮助理解OQPSK系统-OQPSK Matlab / Simulink simulation system modulation and demodulation, including matching filter, Carrier Recovery, timing recovery and other important module, we can observ
QPSK_Simulink
- QPSK的Matlab/Simulink的调制解调仿真系统,给出接收信号眼图及系统仿真误码率,包含载波恢复,匹配滤波,定时恢复等重要模块,帮助理解QPSK的系统-QPSK Matlab / Simulink simulation system modulation and demodulation, the received signal is given eye and BER simulation systems, including carrier recovery, matching f
lssb_dem.m
- LSSB调制解调的MATLAB演示源程序产生消息曲线 载波曲线 频谱曲线等-LSSB modulation and demodulation of MATLAB source generated news demo curve carrier curve spectrum curve
uwb_sim
- 这是一个定点的多带OFDM物理层发射机/接收机模型,共122个子载波,22个导频,采用QPSK调制,5/8前向纠错码(删余卷积码.)-This is a sentinel of the multi-band OFDM physical layer transmitter / receiver model, a total of 122 sub-carrier. 22 pilots, using QPSK modulation, 5 / 8 prior to the error-correctin
ssbmodforcosine
- 以余弦波信号为例,用matlab编码对其进行双边带抑制载波模拟调制-a cosine wave signal as an example, using Matlab coding their bilateral suppression of carrier modulation simulation
OFDMreceive
- 应用于无线通信的RS编码和OFDM调制源程序。64点FFT,19个子载波。调制输 出速率8K。-used in the wireless communications RS coding and OFDM modulation source. 64-point FFT, 19 sub-carrier. Modulation output rate of 8 K.
PATH
- 实现了光通信系统的多径、以及不同信噪比下的通信链路信噪比仿真。其中包含OOK/PPM/DPPM/DHPIM/副载波调制(The simulation of communication link signal-to-noise ratio (SNR) of optical communication system under multipath and different signal-to-noise ratio is realized. It contains OOK/PPM/DPPM/DHP
OFDM
- OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术,实际上OFDM是MCM(Multi Carrier Modulation),多载波调制的一种。(OFDM(Orthogonal Frequency Division Multiplexing is an orthogonal frequency division multiplexing technique. In fact, OFDM is a kind of MCM(Multi
freq_estimate
- 该工程实现对单载波系统QPSK的频偏估计算法。调相信号在接收机相干解调时需要同频同相的参考载波,而发射机和接收机之间往往存在频率偏差,为了消除这种误差,必须在软件层面实现。使用了QPSK四相调制的信号特点进行载波频偏估计,经验证,效果较好。(This project implements frequency offset estimation algorithm for single carrier system QPSK. The phase modulation signal needs t
KHBWFOS
- 单载波调制和OFDM调制各自的优缺点分析及应用前景()
signal_8psk
- 8PSK 是一种相位调制算法。相位调制(调相)是频率调制(调频)的一种演变,载波的相位被调整用于把数字信息的比特编码到每一词相位改变(相移)。(8PSK is a phase modulation algorithm. Phase modulation (phase modulation) is an evolution of frequency modulation (frequency modulation), and the phase of the carrier is adjusted
Demod_8Psk
- 科斯塔斯环提取8PSK调制载波,出载波频率图、眼图、相位偏差等(The Costas loop extracts 8PSK modulated carrier, out of carrier frequency diagram, eye diagram, phase deviation and so on.)
Wireless Communications-Goldsmith(英文版2)
- 英文版,《无线通信》重点论述当前各类无线通信系统中具有普遍性和代表性的基本知识,包括基本的理论、问题、设计思路和分析方法。全书内容包括无线信道模型、无线信道容量、无线通信中的调制编码技术及均衡处理技术、扩频通信,还包括多天线系统、多用户系统、多载波调制、自适应调制与编码、蜂窝系统及无线自组织网络等。书中每部分内容的讲述都有全新的视角和独特的处理方法,并配合丰富的图示、例题和习题。(goldsmith "Wireless Communication" focuses on t
AM
- 用MATLAB产生一个频率为1Hz,功率为1的余弦信源,载波频率为10Hz,显示信号的波形及包络,求出调制信号的功率谱密度,以及相干解调后的信号波形(A cosine source with 1 Hz frequency and 1 power is generated by using MATLAB. The carrier frequency is 10 Hz. The waveform and envelope of the signal are displayed. The power
ofdm
- 基于MATLAB的OFDM系统仿真链路,串行数据经串并变换后进行QDPSK数字调制,调制后的复信号通过N点IFFT变换,完成多载波调制,使信号能够在N个子载波上并行传输,中间插入10训练序列符号用于信道估计,加入循环前缀后经并串转换、D /A后进入信道,接收端经过N点FFT变换后进行信道估计,将QDPSK解调后的数据并串变换后得到原始信息比特。(Simulation Link of OFDM System Based on MATLAB)
20171117
- CDMA是码分多址的英文缩写(CodeDivisionMultipleAccess),它是在数字技术的分支--扩频通信技术上发展起来的一种崭新而成熟的无线通信技术。CDMA技术的原理是基于扩频技术,即将需传送的具有一定信号带宽信息数据,用一个带宽远大于信号带宽的高速伪随机码进行调制,使原数据信号的带宽被扩展,再经载波调制并发送出去。(CDMA is the abbreviation of Code Division MultipleAccess. It is a new and mature w
OFDMSignalDetection-master
- 程序实现的主要功能: OFDM调制识别:研究了基于高阶累量和基于小波变换的OFDM信号和单载波调制信号的识别算法,仿真分析了两种算法在高斯信道和多径瑞利衰落信道下的信号识别性能。 OFDM参数估计:研究了基于Welch算法和AR模型法求解功率谱进而估计信号带宽的算法,对两种算法的估计性能进行了比较;根据OFDM信号的循环平稳性研究了基于循环谱的载频估计算法;根据 OFDM信号的自相关性研究了基于可变延时自相关和固定延时自相关的FFT相结合的算法,估计了OFDM信号的有效数据长度、符号
16qam
- 一个16QAM数字调制电路,包括时钟生成电路,m伪随机序列生成电路,串并转换电路,电平映射电路、载波信号发生电路、ASK幅度调制电路及加法器(A 16QAM digital modulation circuit, including clock generation circuit, m pseudo-random sequence generation circuit, serial parallel conversion circuit, level mapping circuit, car
16QAM调制解调
- % QAMModem.m程序清单 % 仿真4比特原始数据与星座图的编码映射过程; % 完成16QAM信号的调制解调; % 基带信号符号速率 ps =1Mbps; % 成形滤波器的滚降因子 a=0.8; % 载波信号频率fc=2MHz ; % 采样频率 Fs=8MHz ; % 绘制16QAM信号的频谱及时域波形; % 采用相干解调法仿真其解调过程; % 绘制解调前后的基带信号时域波形; % 将原始基带数据、QAM已调数据、滤波器系数写入相应的文本文件中。 clc;(%Qamm