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8QAM
- 利用matlab仿真软件,实现8QAM调制。在实现时采用正交调幅的方式,某星座点在I坐标上的投影去调制同相载波的幅度,在Q坐标上的投影去调制正交载波的幅度,然后将2个调幅信号相加就是所需的调相信号。-Use of matlab simulation software to achieve 8QAM modulation. In achieving the adoption of quadrature amplitude modulation means of a constellation in
QAM
- QAM simulation using a carrier cosine wave with ISI
cs_4
- QAM载波跟踪程序,用matlab写的,小程序,很实用,可以-QAM carrier recovery
16_QAM
- 16QAM 升余弦 高频载波 AWGN信道 最佳接收-Raised cosine frequency carrier 16QAM AWGN channel for best reception
ssy
- 数字QAM接收机的研究及其载波恢复的实现-Digital QAM Receiver and the realization of carrier recovery
QAMXIANGP
- 本程序仿真了16QAM信号的载波相偏估计的HOS算法,整个算法实现分为(1)模拟发送端发送16QAM信号;(2)加入相偏来模拟通过信道后有相偏的测试信号;(3)利用HOS算法进行相偏估计与纠正;(4)输出星座图。-This procedure simulated a 16QAM signal carrier phase offset estimate of the HOS algorithm, the algorithm is divided into (1) analog transmitte
Rayleigh_ofdm
- carrier_count= 200 bits_per_symbol = 2 symbols_per_carrier = 50 loop=10 num=5 循环次数 10 子载波数 200 位数/ 符号 2 符号数/ 载波 50 训练符号数 5 循环前缀长度 T/4 调制方式 QAM 多径信道数 2(缺省) 信道最大时延 5 (单位数据符号) 仿真条件 收发之间严格同步 一个OFDM系统
qam
- 16qam,成型滤波器,加入载波,高斯噪声,调制解调多个星座图等 -16qam, shaping filter, adding the carrier, Gaussian noise, such as modem over Constellation
QAM
- 编写一个含QAM传输的发送和接收模块 1)分别采用复基带仿真和实带通仿真两种形式 a) 实带通仿真时, 载波频率为符号率的4倍 b)发端采用滚降系数0.5的根号升余弦滤波器 2)画出Eb/N0=15dB时的接收波形(收滤波前),取100个采样 3)画出发端输出的眼图和收端过匹配滤波后的眼图(画眼图时不加噪声) 统计误符号率和误比特率与Eb/N0的关系,画出曲线, 与理论计算的曲线相对比 -Prepare to send of one with QAM transmis
zaiboqam
- QAM调制解调的全过程,包括产生随机码,映射调制,加载波,进入信道,解调和判决,过程比较详细,其他调制方式也可以借鉴-QAM modulation and demodulation process, including the generated random code, mapping modulation, plus carrier, into the channel, demodulation and sentencing, the process in more detail, othe
Continuous-Synchronization-of-OFDM
- 该模型实现一个不依赖于任何特定的行业标准通用的连续同步OFDMOFDM模型TX和RX。这个模型的目的是开发和探索出一条连续的(而不是“突发”)的载波和定时同步跟踪计划。然后使用该技术可以扩展和修改特定通信标准。-This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop
IQmodulation
- Quadrature amplitude modulation (QAM) is both an analog and a digital modulation scheme. It conveys two analog message signals, or two digital bit streams, by changing (modulating) the amplitudes of two carrier waves, using the amplitude-shift keying
bpsk
- BPSK基于平方谱和四次方谱的载频估计,可以用于BPSK 16QAM MSK信号的载频估计。-BPSK carrier frequency estimation based on square spectrum and fourth power spectrum, can be used for 16 qam MSK BPSK signal carrier frequency estimation
OFDM_QAM
- ofdm仿真系统matlab源程序,子载波调制方式为qam。-ofdm matlab simulation system source code, sub-carrier modulation for qam.
QAM
- 此matlab代码绘出了M=8,载波频率fc=8/T,给定脉冲波形的QAM信号波形,并绘出了指定的信号星座图。-This matlab code depicts M = 8, the carrier frequency fc = 8/T, QAM signal waveform to set the pulse waveform, and plots the specified signal constellation.
qam
- QAM是Quadrature Amplitude Modulation的缩写,中文译名为“正交振幅调制”,其幅度和相位同时变化,属于非恒包络二维调制。QAM是正交载波调制技术与多电平振幅键控的结合 。-QAM is Quadrature Amplitude Modulation Abbreviation, Chinese translation for " quadrature amplitude modulation" , the amplitude and phase cha
松尾环
- 改进的costas环——‘松尾环’实现64阶QAM信号的载波同步(The 64 order QAM signal carrier synchronization of Costas ring - "Matsuo ring" improved)
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