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Y1197129
宽带射频功率放大器的数字预失真技术研究论文，学习资料(Broadband rf power amplifier digital predistortion technology research
)
- 2011-05-09 22:18:44下载
- 积分：1
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ns-agent
class ns-agent the default parameters
- 2010-01-09 05:18:22下载
- 积分：1
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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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523496
生成2KHz和8KHz的混合信号,使该信号通过上述滤波器,观察滤波前后的波形变化和频谱分布情况, 在改信号中加入高斯白噪声,(The mixed signal of 2KHz and 8KHz is generated so that the signal passes the above filter, the waveform change and spectrum distribution before and after filtering are observed, and Gao Si white noise is added to the modified signal.)
- 2019-03-28 07:45:40下载
- 积分：1
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cSharpUART
c#编写串口通讯代码 多线程实现,老外写的，很有用，很全面(c# write serial communication code multithreading, written by foreigners, very useful, very comprehensive)
- 2013-07-31 17:49:32下载
- 积分：1
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aaa
这是一个关于数字通信原理的实验，特别适合大学生们，(This is a study on the principle of digital communication experiments, particularly suitable for students,)
- 2007-12-17 23:23:12下载
- 积分：1
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DOA估计
本资源为多重信号来波方向估计算法的MATLAB实验仿真，压缩有MUSIC,PM，四阶累积量等几种方法的DOA估计算法仿真。资源整理不易，请务必珍惜。(This resource is the MATLAB simulation of multiple signal direction of arrival estimation algorithm, compression MUSIC, PM, fourth-order cumulant and other methods of DOA estimation algorithm simulation. Resource consolidation is not easy. Please treasure it.)
- 2018-09-25 22:14:23下载
- 积分：1
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spatial modulation
a matlab code for spatial modulation
- 2017-09-16 01:09:55下载
- 积分：1
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2
说明： 2. 关于无线信道的多普勒谱，请回答以下问题：
(1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因；
(2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理；
(3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions:
(1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing;
(2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape;
(3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)
- 2021-01-23 19:48:44下载
- 积分：1
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STM32F103C8小系统
说明： STM32F103C8T6最小系统资料包。最小系统板资料，通用资料。(Minimum system board data, general information.)
- 2020-10-14 16:22:15下载
- 积分：1
