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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,
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1.linking of header data into .cpp in vc++
2.error correcting encoder and decoder
3.viterbi decoder in c
4.frequency modulation and demodulation in matlab
5.Performance Analysis of Weighted Median Filters in Prediction of Images
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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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Frequency Shift Keying Digital Modulation with LabVIEW
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二进制差分编码解码,二进制差分相移键控二进制幅移键控,二进制相移键控,二进制频移键控最小频移键控的调制与解调-Differential encoding and decoding binary, binary differential phase shift keying binary amplitude shift keying, BPSK, binary frequency shift keying Minimum Shift Keying modulation and demodulati
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自己编程产生一种二进制频率调制信号,为数字调制信号的识别做准备。- programming to produce a binary frequency modulation signal, the recognition of digital modulation signals in preparation.
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qpsk调制例程。包括显示幅频特性曲线和星座图-qpsk modulation routine. Including the amplitude-frequency curve show and constellation
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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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2PAM和2PPM调制的IRUWB发射机,各种功率、频率、调制方式等参数在start.m中修改-2PAM and 2PPM IRUWB modulation transmitter, all power, frequency, modulation and other parameters to modify in start.m
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完成了数字接收机的整个流程仿真,从调制,解调,下变频,抽样判决,鉴频的整个模块-To complete the entire process of digital receiver simulation, from the modulation, demodulation, downconversion, sample sentences, frequency of the module
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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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此程序仿真了调频通信系统的调制,跳频调制,解跳和解调 给出了各个信号的频谱-This program simulates the frequency modulation communication systems, frequency hopping modulation, demodulation solution given jump and the spectrum of each signal
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频域不同导频密度的信道估计在被研究,并且在高低时延信道其信道估计被固定了导频分配时域。频域信道估计是基于插补,多项式的广义线性模型(或最小二乘法)和维纳滤波(或线性最小均方误差法)的方法。时域的信道估计是用线性插补完成的。我们通过测量在基于克拉克散射模型的瑞利衰落信道上并带有QPSK调制的粗误码率,已经比较了所有这些方案的结果。-Different pilot density in frequency domain channel estimate to research, and its hi
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orthogonal frequency modulation technique complete code
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Frequency Modulation
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Radio Propagation
• Large scale fades
– Attenuation: in free space, power degrades by 1/d2
– Shadows: signals blocked by obstructing structures
• Small scale fades
– Multipath effects:
» Rapid changes in signal strength over
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matlab:距离方程、线性调频、雷达波形、动目标显示、脉冲压缩、编码波形、伪随机序列、SAR、RCS-matlab: from the equation, linear frequency modulation, radar waveform, moving target indication, pulse compression, encoding waveform, pseudo-random sequence, SAR, RCS
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Frequency Modulation Program.
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四通道分集合并接收机,调制方式为连续相位频率调制-Four-channel diversity combining receiver for continuous phase modulation frequency modulation
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研究生课题利用simulink对运动目标进行仿真,涉及跳频信号处理调制解调混频时间控制。-Graduate program of moving targets using simulink simulation, signal processing, frequency-hopping modulation and demodulation involves mixing time control.
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