Description: 利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。-Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error. Platform: |
Size: 491520 |
Author:叶双 |
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Description: 根升余弦函数，主要用在调制时的成型时使用-Root raised cosine function, mainly used in modulation used at the time of molding Platform: |
Size: 1024 |
Author:彭越 |
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Description: Modify the Gray-coded modulation example (COMMDOC_GRAY)
so that it uses a pair of square root raised cosine filters
to perform pulse shaping and matched filtering at the
transmitter and receiver, respectively.-Modify the Gray-coded modulation example (COMMDOC_GRAY) so that it uses a pair of square root raised cosine filtersto perform pulse shaping and matched filtering at thetransmitter and receiver, respectively. Platform: |
Size: 2048 |
Author:JILIANGHAI |
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Description: 本程序用于完成BPSK、QPSK、8PSK的调制仿真。并可任意扩展到MPSK和MQAM。程序分成三个部分：phase.m对基带码元序列进行脉冲成型，可选矩形脉冲，升余弦脉冲和平方根升余弦脉冲； model.m 为主程序，完成各种信号的基带星座图映射、脉冲成型和调制； command.m给出一个简单的频谱显示测试。-This procedure for the completion of BPSK, QPSK, 8PSK modulation simulation. Arbitrary and may be extended to MPSK and MQAM. Program is divided into three parts: phase.m symbol of the baseband shaping pulse sequences, optional rectangular pulse, the square root raised cosine pulse and raised cosine pulse model.m-based procedures, completed a variety of base-band signal constellation mapping , pulse shaping and modulation command.m given spectrum shows a simple test. Platform: |
Size: 4096 |
Author:long |
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Description: This the PAPR simulator for SC-FDMA by using the Raised-cosine filter or Root raised-cosine filter under different rolloffFactor. -This is the PAPR simulator for SC-FDMA by using the Raised-cosine filter or Root raised-cosine filter under different rolloffFactor. Platform: |
Size: 2048 |
Author:clement |
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Description: 直接序列扩频+成型滤波，将编码后数据进行256倍扩频，再按照4倍内插根升余弦成型滤波，最后成形滤波后按4路并行输出，以满足并行输入DA的要求。-Direct Sequence Spread Spectrum+ shaping filter, the encoded data 256 times more spread spectrum, and then interpolated according to four times the root raised cosine shaping filter, finally forming the filtered output by 4-way parallel to meet the requirements of parallel importation of DA. Platform: |
Size: 722944 |
Author:袁磊 |
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Description: In this simulink model , 16-QAM modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output.-In this simulink model , 16-QAM modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output. Platform: |
Size: 9216 |
Author:quail |
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Description: In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.-In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output. Platform: |
Size: 8192 |
Author:quail |
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Description: 在matlab环境下实现通信系统中的BPSK，QPSK，16QAM，调制。成型滤波和匹配滤波都采用根升余弦函数。-In the matlab environment to achieve communication system BPSK, QPSK, 16QAM, modulation. Shaping filter and matched filter are used root raised cosine function.
Platform: |
Size: 4096 |
Author:Fengxiaodong |
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Description: 根升余弦基带成形滤波器的设计及其DSP实现.最后利用系数对称特性，在某软件无线电电台系统的DSP 芯片中编程，
实现均方根升余弦滤波器的成形滤波算法-First this essay introduces baseband shaped filter theory and
requirements of an SDR system on shaped filtering. And, the author
introduces various realization methods of FIR filter presently, in
addition the author expatiate on square-root raised-cosine filter and its
design in IS-95 software defined system. Finally, the author illustrates
the shaped filter realization based on software programming using
symmetry properties of FIR filter coefficients Platform: |
Size: 117760 |
Author:程文翔 |
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Description: 代码实现了一个根升余弦成型滤波器，2PAM信号通过此成型滤波器，并且匹配接收，画出了发送和接收波形，验证了代码的正确性。-The code designs a root raised cosine filter,2PAM signal transmitted through the filter and matched using the same filter, I plot the transmitted signal and received signal to verify the correctness of the code. Platform: |
Size: 1024 |
Author: |
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Description: Using the attached Matlab/Octave script, one can plot the time domain and frequency domain representations of the raised cosine filters for different values of . Platform: |
Size: 3072 |
Author:nunungsuheri |
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Search - Root Raised Cosine