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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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北斗2.1协议
北斗通信设备通用的协议，串口通信与北斗卫星的通信协议，(The general protocol of Beidou communication equipment, serial communication protocol with Beidou satellite)
- 2020-09-23 12:17:49下载
- 积分：1
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AD转换程序
数模转换，非常实用的的一个模块化程序，可快速嵌入使用(Digital analog conversion)
- 2017-12-15 17:25:55下载
- 积分：1
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QPSKsimulat
基于systemview的qpsk原理仿真(qpsk based on the principle of Systemview Simulation)
- 2020-11-16 17:39:40下载
- 积分：1
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181072
用C++写的LDPC的传输仿真程序,包括编码,BP译码以及判决()
- 2018-07-08 21:19:32下载
- 积分：1
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35569_91417v00_Wimax
Specification for the WiMAX Standard
(包括如何用simulink实现,简单易懂)(Specification for the WiMAX Standard (including where What is the purpose of achieving Simulink and easily understood))
- 2007-05-10 02:33:17下载
- 积分：1
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数字通信系统仿真
说明： 数字通信系统的仿真，全matlab代码，实测可用(Digital communication system simulation, full matlab code, measurement available)
- 2021-04-20 16:12:31下载
- 积分：1
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RAKE
介绍了在移动通信系统中对抗多径衰落的一种重要技术——分集接收技术，并分析了各种分集、合并技术的优缺点，提出了RAKE接收机的概念和结构。 (Against multipath fading important technology- diversity reception technology in the mobile communication system, and analyze the advantages and disadvantages of the various sub-sets, merging technology RAKE receiver concepts and structures.)
- 2012-11-24 17:57:23下载
- 积分：1
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CSE3213_13_RandomAccess_2_F2010.pdf
csma tutorial for begginers with graphics explantaion
- 2017-10-10 09:00:09下载
- 积分：1
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LFM
脉冲压缩的匹配滤波。目标距离分别为10米，30米和100米，对于未压缩的脉冲，三个回波信号混叠在一起，不能分辨，而经过脉冲压缩的脉冲信号则可通过匹配滤波收到3个回波信号(Matched filtering for pulse compression.Target distances are 10 metres, 30 metres and 100 metres, respectively. For uncompressed pulses,The three echo signals are overlapped and can not be distinguished. While pulse compression can distinguish three echo signals after matched filtering)
- 2021-04-15 20:38:54下载
- 积分：1
