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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,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一种具体的频率同步方法,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。
(5 In the three path Rayleigh channel, for direct sequence spread spectrum:
(1) Please design a specific DS-CDMA code division guide-assisted channel estimation, receiver, etc were used to benefit the merger, the maximum ratio combining. With the Simulink simulation, BPSK BER performance measure, draw-bit signal to noise ratio and channel estimation mean square error of the curve, draw the signal to noise ratio and bit error rate curve, please explain in bit error rate 0.01, the two methods are combined performance of the different physical meaning.
(2) frequency has been set up synchronization, a specific design of DS-CDMA single-stop sliding correlation method of time synchronization, simulation with Simulink (S-Function code their own way), analyze the design of time synchronization accuracy, draw bit signal to noise ratio and capture probability curve.
(3) set time has been synchronized, a specific design of DS-CDMA frequency synchronization method, simulation using Simulink ()
- 2011-07-20 11:02:06下载
- 积分:1
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chap15
matlab图像处理实例详解chap15——图像处理的MATLAB实例(matlab image processing examples explain chap15- MATLAB image processing examples)
- 2013-12-16 15:58:52下载
- 积分:1
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ssc_lead_acid_battery
说明: 这个例子展示了一种高压电池,类似于混合动力汽车中使用的电池。该模型采用真实的直流链路电流分布,该电流分布来源于动态驾驶循环。总模拟时间为3600秒。此示例演示如何使用Simscape对铅酸蓄电池单元建模 实现等效电路元件非线性方程的语言。这样,与完全在Simulink中建模不同,模型组件和定义物理方程之间的连接更容易理解。有关定义方程及其验证,请参见Jackey,R.“电气系统部件选择的简单有效铅酸蓄电池建模过程”,SAE世界大会与展览会,2007年4月,参考文献2007-01-0778。(This example shows how to model a lead-acid battery cell using the Simscape language to implement the nonlinear equations of the equivalent circuit components. In this way, as opposed to modeling entirely in Simulink, the connection between model components and the defining physical equations is more easily understood. For the defining equations and their validation, see Jackey, R. "A Simple, Effective Lead-Acid Battery Modeling Process for Electrical System Component Selection", SAE World Congress & Exhibition, April 2007, ref. 2007-01-0778.)
- 2020-06-28 18:00:01下载
- 积分:1
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Assignments
Collection of antenna assignments
- 2010-12-16 01:44:44下载
- 积分:1
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UniQuant
uniform quantizer , a quantizer for calcualting the quantized values of the output
- 2010-05-29 02:00:48下载
- 积分:1
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VSR
自己做的三相整流器,使用矢量控制。simulink的仿真平台做的,很强大哦(this is a three phase rectifier)
- 2012-06-06 21:35:16下载
- 积分:1
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fenxinglilunjiyingy
分形研究的若干问题及动向,对于研究不规则信号有一定的帮助(The fractal research issues and trends , some help for the study of irregular signals
)
- 2013-01-30 16:49:12下载
- 积分:1
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matlab-examples1
Matlab实用小程序实例合集第一部分,都是一些完成特定功能的小程序,很适合新手朋友(Practical examples of Matlab collection first part of the program, are some of the specific features of the completion of a small program, it is suitable for novice friend)
- 2014-01-17 09:48:12下载
- 积分:1
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maxmin
求两个整数的最大公因子,求这两个整数的最小公倍数(maximum common factor and lease common multiple)
- 2010-11-13 21:34:44下载
- 积分:1
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RGB
The Matlab function RGB() converts a color index (whole number from 1-21), English name of a color (string), or RGB triple with whole number components in {0, 1, ..., 255} into an RGB triple with real-valued components in [0,1]. RGB() allows the user to access a set of 21 colors via their common English names. For eight of these colors that have more than one common name, the program accepts alternative names, reducing the memory burden on the user.
- 2009-11-20 16:06:02下载
- 积分:1