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6
说明： 在瑞利信道中，对于OFDM信号设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线(In Rayleigh channel, a specific guidance aided channel estimation method is designed for OFDM signal, and the simulation is carried out with Simulink to measure the BER performance of BPSK modulation. The relation curve between bit SNR and channel estimation mean square error is drawn, and the relation curve between bit SNR and bit error rate is drawn)
- 2020-12-29 16:38:10下载
- 积分：1
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程序
说明： 1、基带码型仿真
（1）通过仿真观察占空比为50%、 75%以及100%的单、
双极性归零码波形以及其功率谱，分析不同占空比对
仿真结果的影响。
（2） 通过仿真产生一随机消息码序列，将其分别转换为
AMI码和HDB3码，观察它们的波形及其功率谱密度。
2、数字带通调制系统仿真
设计一个采用2ASK（ OOK） 调制的数字通信系统：
产生二进制随机数据，并仿真其对应的2ASK调制波形，
分析其频谱。所产生的调制波形加入不同信噪比的白噪声，
选取合适的接收方案，画出系统误码率曲线，并与理论误
码率进行对比。(1.Baseband pattern simulation
2. Simulation of digital band-pass modulation system)
- 2020-06-29 07:20:01下载
- 积分：1
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用51单片机完美地解决凝露现象
用51单片机完美地解决凝露现象。防止元件老化(The dew phenomenon can be perfectly solved by 51 single chip computer. Preventing component ageing)
- 2020-06-18 11:00:01下载
- 积分：1
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6
说明： 6. 在三条径的瑞利信道中，对于OFDM：
(1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。
(2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM:
(1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn.
(2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability.
(3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)
- 2021-01-23 11:58:44下载
- 积分：1
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多径干扰下ofdm仿真
说明： 多径参数干扰下的ofdm系统的matlab仿真代码，可供学习(Matlab simulation code of OFDM system under multipath parameter interference can be learned)
- 2019-04-10 09:41:31下载
- 积分：1
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VB串口实验me
计算机网络实验做得串口，非原创，只是为了下载方便。(Computer network experiments do serial port, not original, just for download convenience.)
- 2018-12-06 11:10:58下载
- 积分：1
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EGC
分析了分别在瑞丽、莱斯、AWGN衰落信道、采用BPSK、QPSK、QAM调制方式情况下的EGC性能比较(The comparison of EGC performance under the conditions of Rayleigh, Rician, AWGN fading channels and using BPSK, QPSK and QAM modulation methods is analyzed.)
- 2021-04-22 18:58:48下载
- 积分：1
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VC_UP_BallKey
说明： 说明：此为球形开关测试程序的上位机软件。
能够记录由下位机上传的每支球形开关
的通断情况，自动记录上传的时间，
并且会将历次的结果保存在PC机的硬盘
中，带有具体的日期，方便查询。(Note : This spherical switch to the testing procedures PC software. To record the next crew uploaded each spherical switch-off, automatically records upload time, and will keep all the previous results of the PC's hard disk, with the specific date, and easily accessible.)
- 2006-04-06 13:20:48下载
- 积分：1
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relativity
计算图像水平相邻、垂直相邻、对角相邻像素之间的相关性(relativity between pixel of image)
- 2017-10-26 08:36:07下载
- 积分：1
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Sample_VC
说明： prodave是西门子PLC与高级语言的程序接口,如何使用它,这里给出一个VC与西门子PLC通讯并读写DB块数据的例子(Prodave is Siemens PLC and high level language program interface, how to use it, so here is a VC and Simon PLC and literacy DB block of data example
)
- 2011-04-18 15:09:48下载
- 积分：1
