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5
说明： 5. 在三条径的瑞利信道中，对于直接序列扩频：
(1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。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) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，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。(5. In three-path Rayleigh channel, for direct sequence spread spectrum:
(1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate.
(2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve.
(3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)
- 2019-01-15 10:58:23下载
- 积分：1
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gps信号模拟软件
GPS信号模拟软件，模拟GPS设备向串口输出0183格式标准语句，配合串口虚拟工具使用，可以在普通电脑上调试(GPS signal simulation software, which simulates GPS equipment to output 0183 standard statements to serial port, can be debugged on ordinary computer with serial virtual tools.)
- 2020-06-24 13:20:02下载
- 积分：1
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OFDM-basedwirelesschannelmodelingandsimulation
基于OFDM无线信道特性建模与仿真,这是一篇很好的解释，OFDM信道模型建立的论文，对于这方面的仿真有很大的参考意义。(OFDM-based wireless channel modeling and simulation, this is a good explanation, OFDM channel model of the paper, the simulation for this great reference value.)
- 2010-09-20 10:46:19下载
- 积分：1
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dsp 28335 can 通讯程序
dsp 28335 通讯例程，经检测可用，欢迎大家下载(DSP 28335 communication routines are available after testing. Welcome to download.)
- 2018-04-06 18:49:04下载
- 积分：1
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103--protocol
103规约，比较全 规约草案 103规约完IEC60870-5-103规约基本要点全版 ProtocolTester.exe 许继103通信规约TCP(many about IEC 103 protocol )
- 2012-03-15 20:17:20下载
- 积分：1
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matlab_code
matlab code matlab code matlab code matlab code matlab code
- 2020-07-02 16:00:02下载
- 积分：1
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vbchuankou
用VB编写的串口调试助手，附带51程序，大家可以学习，很经典，很地道(With VB serial debugging assistant, with 51 programs)
- 2013-08-28 16:44:14下载
- 积分：1
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ask fsk
利用matlab实现ASK和FSK调制解调过程对比他们的不同(Using MATLAB to realize the modulation and demodulation process of ASK and FSK, their differences are compared.)
- 2020-06-29 23:40:03下载
- 积分：1
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madqm
采用Log-BP算法的LDPC码译码仿真程序,给出了不同信噪比下误码率和误包率的统计图,用matlab和Cc-mex程()
- 2018-02-02 07:43:07下载
- 积分：1
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Modbus-for-Field-Technicians
Modbus for Field Technicians 介绍modbus的相当好的资料，包括原理和编程和协议介绍(Modbus for Field Technicians introduction modbus fairly good information, including schematics and programming and protocol description)
- 2013-07-13 22:47:57下载
- 积分：1
