Description: This filter is implemented as an FIR filter which has impulse response.MATLAB program for generating the impulse response of the Jakes filter,and filtering white noise with the filter.The first output figure shows the estimated PSD at the filter output. The second figure shows the magnitude of the envelope on a log scale. In a wireless communication system, this corresponds to the fading envelope. Platform: |
Size: 2048 |
Author:nidhi |
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Description: it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed-it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed Platform: |
Size: 2048 |
Author:hassan |
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Description: 介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据-The introduction was done with the principle of the QPSK modulation and demodulation in digital communications, a script was written by using Matlab program to carry out a simulation of the QPSK communication system ,which contains the concrete realization of transmit and receive process. The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise, spectral analysis of each module is also done, the results obtained with theoretical results in the main, which provides an effective frame of reference for understanding the performance of QPSK systems, and the practical application in the system to make further designed. Platform: |
Size: 315392 |
Author:co |
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Description: 运行一个Matlab程序，完成一个M＝4的PAM通信系统的仿真。仿真对10000个符号（2万个比特）进行。测量在噪声方差为0,0.1,1.0和2.0时的符号差错概率。通过低通滤波器。画出理论误码率和由Monte Carlo仿真测得的误码率，并比较这些结果。(平均符号能量为1)-Running a Matlab program, complete a M = 4 PAM communication system simulation. The simulation of 10000 symbols (20000 bits). Measurement in the noise variance is 0,0.1, 1.0 and 2.0 when the symbol error probability. Through the low pass filter. Draw the theoretical error rate and Monte Carlo simulation by measured error rate, and compare these results. (average symbol energy for 1)
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Size: 1024 |
Author:陈巧云 |
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Description: 介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与
理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据。
-The introduction was done with the principle of the QPSK modulation and demodulation in digital communications，a script was written by using Matlab program to CalTy out a simulation of the QPSK communication
system．which contains the concrete realization of transmit and receive process．The time-domain diagram is drew
separately when the signal transmits in the ideal channel and in the channel with noise，spectral analysis of each
module is also done，the results obtained with theoretical results in the main，which provides an effective frame of
reference for understanding the performance of QPSK systems，and the practical application in the system to make
further designed． Platform: |
Size: 365568 |
Author:王华 |
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Description: 利用MATLAB集成环境下的M文件，编写程序来实现MSK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。通过这次课程设计进一步加深了我对最小二进制相移键控（MSK）调制解调性能的理解与掌握，同时将课堂上学到的理论知识用于实践。增强了我在模拟仿真方面的能力，为以后系统开发和通信系统仿真打下了良好的基础。(The use of MATLAB in the integrated environment of M file, write a program to achieve MSK modulation and demodulation, and draw out the time-frequency waveform before and after demodulation in time domain and frequency domain waveform and the superimposed noise before and after demodulation, to analyze the correct and the channel of the demodulation process of signal transmission according to the operation results and waveform. Through this course design, I further deepen the understanding and mastery of the minimum binary phase shift keying (MSK) modulation and demodulation performance, at the same time, the theoretical knowledge learned in the classroom is used in practice. It enhances my ability in analog simulation, and lays a good foundation for future system development and communication system simulation.) Platform: |
Size: 595968 |
Author:史宾
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