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OFDM通信系统调制解调 包括数字前端处理、卷积编码、峰均值抑制、符号定时、频偏检测、信道估计、相位补偿等-OFDM modulation and demodulation communication system including digital front-end processing, convolution coding, the mean peak inhibition, symbol timing, frequency offset detection, channel estim
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此函数用于IS-95前向链路系统的仿真，包括扩
频调制，匹配滤波，RAKE接收等相关通信模块。
仿真环境: 加性高斯白噪声信道.
数据速率 = 9600 KBps
- This function is used in IS-95 forward link system simulation, including the expansion frequency modulation, matched filter, RAKE receiver and oth
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正交频分复用技术是近年来发展起来的新技术,在高速无线数据传输领域有很大的应用前景。文章在分析和总结相关文献的基础上,介绍了正交频分复用(OFDM)技术的发展历史,讨论了正交频分复用技术的基本原理和实现方法。通过分析表明,在高速无线通信中OFDM对于消除符号间干扰(ISI),降低系统的复杂度等方面具有很大优势。正交频分复用(OFDM)是一种多载波宽带数字调制技术,它能有效地克服传输中的多径干扰和消除码间串扰,适合于高速率的地面信道视频传输。本文就OFDM技术进行了较为详尽的分析,并对OFDM的传输
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这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模块，并统括系统性能的仿真验证了系统设计的可靠性。
-This is a relatively complete simulation of OFDM communication system design, including coding, modulation, IFFT, the upper and lower frequency, Gaussi
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脉冲编码调制(PCM)实现
编程实现PCM技术的三个过程：采样、量化与编码。
采样：低通连续信号采样，以 x=sin(200*t) m=x./(200*t) m=m.*m 为例说明低通采样定理，绘出信号时、频图形；带通连续信号采样，以x=sin(20*t) m=x./t 为例说明带通采样定理，绘出信号时、频图形。
量化：均匀量化，以幅度 的正弦信号为例实现为64级电平的均匀量化；非均匀量化，输入A律PCM编码器的正弦信号 ，采样序列为 ，将其进行PCM编码，给出编码器的输出码组序列
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通信中，产生半圆形频率信号，并进行频率调制-Communication, resulting in semi-circular frequency signal, and the frequency modulation
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针对传统线性调频(LFM)信号参数估计算法中复杂的搜索和计算问题，提出了一种不需要参数搜索的快速
LFM信号参数估计算法。该算法先用希尔伯特变换估计LFM信号瞬时相位，再用二次相位函数拟合LFM信号瞬
时相位从而得到初始频率和调频斜率的估计-The traditional linear frequency modulation (LFM) signal parameter estimation algorithms and computational complexity of th
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雷达信号中的线性调频信号LFM时域及频域代码-Radar signal of linear frequency modulation signal in time domain and frequency domain code LFM
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线性调频信号雷达仿真,简要的进行了线性调频信号的产生以及经过匹配滤波器处理后得到压缩信号的仿真-Linear frequency modulation radar simulation, this summary of the linear FM signal generation and after matching filter treatment to obtain the compressed signal simulation
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2FSK仿真演示系统，可以任意输入码字序列，和载波频率，动态产生调制波形。可以清楚的看到整个调制解调过程的时域及频域的波形。-Simulation demo system 2FSK, can enter the code word sequence, and the carrier frequency, modulation waveform is dynamically generated. Can clearly see the time domain and frequency domai
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AM MODULATION: It is matlab code for AM,DSBSC,SS B with carrier ,ISB, & multitone AM & their spectrum. AM is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the st
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无线通信simulink仿真，蓝牙调频通信系统例子-Bluetooth frequency modulation communication system example
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一种（LFM）Linear frequency modulation雷达的仿真-Linear frequency modulation (LFM) radar simulation
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用于IS-95前向链路系统的仿真，包括扩频调制，匹配滤波，RAKE接收等相关通信模块。 仿真环境: 加性高斯白噪声信道. 数据速率 = 9600 KBps
- Before the IS-95 is used to link the system simulation, including the expansion of
Frequency modulation, filtering matched related communication module, RAKE rec
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用matlab产生符合要求的余旋信源，并设置载波频率，运用DSB调制画出调制后波形。-Using matlab to generate more than spin source to meet the requirements and set the carrier frequency, modulation using DSB modulated waveform draw.
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时频调制，抗多径干扰，MATLAB源代码，实测可用。-Time-frequency modulation, anti-multipath interference, MATLAB source code, measured available.
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稀疏分数阶傅里叶变换例子，线性调频信号的例子，分数阶傅里叶变换检测(Sparse fractional Fourier transform examples, linear frequency modulation signal example, fractional Fourier transform detection)
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线性调频连续波的雷达测距测速的两次FFT(Linear frequency modulation continuous wave radar ranging and speed estimation by twice FFT.)
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esprit algorithm signal frequency interference can be assessed NRZ type differential phase modulation signal modeling and simulation analysis, About ultrasonic parking radar ranging.
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Pisarenko harmonic decomposition algorithm, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Including single sideband, double sideband, suppressed carrier and quadruple.
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