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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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43624874-MIT
Effective methods of performing diversity selection in wireless systems has been demonstrated to significantly reduce bit error rate.
- 2018-06-04 11:52:12下载
- 积分：1
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performance_of_MIMO
MIMO多天线收发 各种性能比较（BER曲线） 包括MMRC EGC SC Alamouti V-BLAST。信道为瑞利信道，有2种，相关和非相关。测试仿真结果 请运行文件名带plot的。(MIMO multi-antenna transceiver various performance comparison (BER curve), including MMRC EGC Ala SC mouti V-BLAST. Rayleigh channel to channel, two species, and correlated. Simulation results of tests requested documents were operating with the plot.)
- 2007-06-25 07:19:58下载
- 积分：1
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Catalan
calculate catalan number
- 2013-11-06 12:07:53下载
- 积分：1
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MIMO
MIMO智能天线系统中波束形成算法的研究(Research on Beamforming Algorithm in MIMO smart antenna system)
- 2021-05-16 14:30:02下载
- 积分：1
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ul_scram_code_generator
wcdma上行扰码生成，严格按照3gpp 25212进行编写，有多种实现方式(wcdma uplink scrambling code generation, in strict accordance with 3gpp 25212 to write, there are a variety of ways)
- 2013-10-09 00:18:49下载
- 积分：1
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8255
说明： 主要介绍了8255接口的基础知识及其实例的应用，并借助几个小例子，介绍如何设计和使用8255(It mainly describes 8255 which is a paralel port)
- 2010-10-18 09:24:17下载
- 积分：1
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1
说明： Security in Mobile Ad Hoc Networks
- 2014-02-20 23:02:56下载
- 积分：1
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TruncatedGaussian
此函数用于满足截断高斯分布的随机数的产生。(Truncated Gaussian distribution)
- 2020-10-27 20:09:58下载
- 积分：1
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4ASK
说明： 此代码为4ASK发送调制与接收解调的通信系统，为主要代码(Communication system of 4ask transmitting modulation and receiving demodulation)
- 2021-01-09 21:02:09下载
- 积分：1
