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2008_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,测量BPSK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,请解释在误码率为0.01时,两种合并方式所表现的不同的物理意义。
(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(自己编写代码S-Function方式),分析所设计方案的时间同步精度,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一种具体的频率方法,用Simulink进行仿真(自己编写代码S-Function方式),画出比特信噪比与频率同步误差的关系曲线。
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- 2020-12-23 10:29:06下载
- 积分:1
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Programación Universitaria
hbhkj ghghjg jhkjg khh
- 2018-02-01 19:09:39下载
- 积分:1
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channelcoding
数字集群信道编解码程序,包括BCH和RCPC,属于欧洲ETSI Tetra标准。(digital trunking channel coding and decoding procedures, including BCH for RCPC and, European ETSI Tetra standard.)
- 2020-10-20 11:17:24下载
- 积分:1
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SatNoControlSim
simulink搭建的卫星姿态动力学仿真,参考书籍是章仁为的卫星鬼道姿态动力学仿真,想学对卫星姿态有兴趣的同学强烈推荐,(simulink to build the satellite attitude dynamics simulation, reference books is Zhang Ren ghosts satellite attitude dynamics simulation, I wanted to learn for students interested in satellite attitude is strongly recommended,)
- 2013-07-30 22:51:52下载
- 积分:1
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qing_ww44
插值与拟合,解方程,数据分析,包含收发两个客户端程序,三相光伏逆变并网的仿真。( Interpolation and fitting, solution of equations, data analysis, Transceiver contains two client programs, Three-phase photovoltaic inverter and network simulation.)
- 2017-04-20 14:20:09下载
- 积分:1
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4
说明: 4. 试说明卷积编解码的工作原理:
(1) 使用Simulink仿真卷积编码,并用Viterbi译码的方法进行解码,其中的编码、译码全部是自己编写代码(S-Function方式),不是调用Simulink的已有编码、译码函数。
(2) 请在加性白高斯噪声信道中,画出比特信噪比与误码率的关系曲线。(4. Try to explain the working principle of convolutional codec:
(1) Simulink was used to simulate convolutional coding, and Viterbi decoding method was used for decoding. The coding and decoding were all written by oneself (s-function method), rather than calling the existing coding and decoding functions of Simulink.
(2) in the additive white gaussian noise channel, please draw the curve of the relationship between bit signal-to-noise ratio and bit error rate.)
- 2021-01-23 11:48:39下载
- 积分:1
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scriptofdmtx
code OFDM Matlab use in MIMO
- 2012-06-24 14:28:10下载
- 积分:1
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bpsknewnochannel
实现物理层网络编码的仿真,此为无信道编码环境下实现的(network coding)
- 2012-04-12 11:41:55下载
- 积分:1
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M_Rife
说明: 单频信号实现频率估计,经典算法MRIFE(frequency estimation)
- 2021-03-31 17:29:09下载
- 积分:1
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RS_BCH
说明: 本压缩包收集了较为经典的几种关于BCH和RS编译码的matlab程序,以及通信系统的仿真等。供大家参考学习,搬运整理而得(This compression package collects several classical matlab programs about BCH and RS coding and decoding, as well as the simulation of communication system. For your reference and study, handling and sorting out)
- 2019-05-02 18:00:48下载
- 积分:1