搜索资源列表
-
0下载：
调制进制：载波频率：信道信噪比
两载频的差值：信道信噪比-Band modulation: carrier frequency: channel SNR difference between the two carrier frequencies: Channel SNR
-
-
1下载：
pi/4-qdpsk调制解调程序，能有效地进行差分解调和鉴频器解调，在一些不易提取载波的场合很有用。因此，利用仿真来研究系统是必要的。-pi/4-qdpsk modulation and demodulation process, can effectively reconcile the difference solution frequency discriminator demodulation, carrier extraction in a number of difficult si
-
-
0下载：
可以实现二进制振幅键控、二进制频移键控和二进制相位键控的解调和调制功能。-Can achieve binary amplitude shift keying, binary frequency shift keying and binary phase shift keying demodulation and modulation functions.
-
-
0下载：
此文件为ofdm的matlab仿真程序，详细画出了时域和频域的相关图，以及调制信号的实虚部。-This file is the matlab ofdm simulation program, detailed drawing of the time domain and frequency domain correlation diagram, and the modulation signal real and imaginary parts.
-
-
1下载：
TCM是把纠错编码与调制相结合的一种技术，将编码与调制作为一个整体同时进行处理，既有纠错能力又有频带压缩能力，基本原则是利用信号集的冗余度来提高纠错能力，从而在不扩展占用频带的前提下提高编码增益。这样就可以在传输功率和带宽都不变的同时提高数字传输系统的可靠性。-TCM is the error correction coding and modulation of a combination of technology, coding and modulation processing as a
-
-
2下载：
基于MATLAB的语音信号的调制和解调，包括画出各个阶段的语音时域和频域图形-Matlab-based voice signal modulation and demodulation, including draw stages of time domain and frequency domain speech
-
-
0下载：
MIMO Othogonal Frequency Division Modulation
-
-
0下载：
Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers,
one exactly 90 degrees out of phase with respect to the other, are used to transmit data over
a given physical channel. One signal is called the I sign
-
-
0下载：
Abstract—This paper describes a pseudorandom carrier modulation
scheme and its harmonic spectra spread effect. The pseudorandom
carrier of the proposed scheme are produced through
the random synthesis of the two triangular carriers, each of the
-
-
1下载：
电路中使用了锁相环音频译码器LM567。LM567是一种模拟与数字电路组合器件，其电路内部有一个矩形波发生器，矩形波的频率由5、6脚外接的R、C值决定。输入信号从3脚进入LM567后，与内部矩形波进行比较，若信号相位一致，则8脚输出低电平，否则输出高电平。8脚是集电极开路输出，使用时必须外接上拉电阻。
将LM567第5脚上幅值约为4V的标准矩形波，通过R1引至三极管VT1的基极，使接在VT1发射极的红外线发射管导通并向周围空间发出调制红外光。-PLL circuit used in the
-
-
1下载：
基于MATLAB的 SSB调制解调实现.利用MATLAB集成环境下的M文件，编写程序来实现SSB的调制解调，并绘制出解调前后的时域和频域波形及叠加噪声时解调前后的时频波形，根据运行结果和波形来分析该解调过程的正确性及信道对信号传输的影响。-MATLAB-based SSB modulation and demodulation to achieve. Advantage of MATLAB M-files integrated environment, programming to achiev
-
-
1下载：
实现2M数据速率的GMSK调制，时钟频率20M，2分频后作为移位寄存器-2M data rate to achieve the GMSK modulation, the clock frequency of 20M, 2 minutes after a shift register frequency
-
-
0下载：
直序扩频系统，首先基带信号通过脉冲成型，m序列扩频然后进行BPSK调制发送，接收端接收到信号加干扰和噪声，进行解调和解扩恢复原始信号。- The straight foreword wide frequency system, the first baseband signal through the pulse formation, the m sequence wide frequency then carries on BPSK the modulation transmission, t
-
-
0下载：
构建OFDM调制的数字电视信号DVB-T，得到其时域、频谱图，并对其上变频，模拟其发射！-Construction of OFDM modulation digital television signals DVB-T, by the time domain, frequency spectrum, and its up-conversion, analog of its launch!
-
-
0下载：
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
-
-
0下载：
CFFT is a radix-4 fast Fourier transform (FFT) core with configurable data width and
a configurable number of sample points in the FFT.
Twiddle factors are implemented using the CORDIC algorithm, causing the gain of the
CFFT core to be differen
-
-
0下载：
FSK调制解调 通过有扰信道 输出滤噪声 频率谱密度估计-FSK modulation and demodulation are disturbed by the noise channel output filter frequency spectral density estimation
-
-
0下载：
蓝牙全双工语音和数据传输
蓝牙调制和跳频
蓝牙语音传输的相关程序-Bluetooth full duplex voice and data transfer Bluetooth modulation and frequency hopping Bluetooth voice transmission procedures
-
-
0下载：
As traditional control schemes, open-loop Hysteresis and closed-loop pulse-width-
modulation (PWM) have been used for the switched reluctance motor (SRM) current controller. The Hysteresis controller induces large unpleasant audible noises because
-
-
0下载：
程序为常规AM，DSB，SSB调幅信号的调制与解调的MATLAB程序，其中单边带调制用两种方法进行调制：一种为频谱直接变换，另一种为希尔伯特变换实现-MATLAB for norm AM,DSB and SSB modulation and demodulation,besides,modulation for SSB,has tow ways:frequency spectrum transform and hilbert transform
-
