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biysheji
自行车里程表 毕业设计 答辩 毕业设计 毕业设计(Graduation reply bicycle odometer)
- 2011-05-06 12:39:33下载
- 积分:1
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基于DFT的MIMO-OFDM系统的信道估计算法研究代码
说明: MIMO系统仿真 MIMO技术可W极大地提升系统吞吐量和有效抵抗多径衰落的影响,被视作LTE的核也技术之一。信号检测模块又是MIMO系统中非常重要的一步,因为接收端收到的信号是经历了无线信道衰落影响的信号,与发送端发送的初始值之间差距较大,因此,在接收端首先应进行信道估计求出信道矩阵H,然后根据该信道矩阵的信息,从接收端还原出发送信号。因此,在MIMO系统中信号检测直接彰响着系统系能的提升。本章将先介绍高移动性MIMO无线信道的建模方法(simulation of MIMO-OFDM communication system)
- 2021-04-11 19:58:57下载
- 积分:1
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softwarephaselockedloop
在电网电压频率波动或者三相不平衡的情况下,硬件锁相很难准确检测到基波正序的相位。在结合PWM整流器空间矢量解耦控制算法的基础上,将软件锁相环技术应用在PWM整流器控制系统中,并用仿真和实验验证了该方案的可行性。实验结果表明,该方案解决了电网电压频率波动及三相不平衡时的相位同步等问题,并在工程上具有一定参考价值。(Frequency or voltage fluctuations in three-phase unbalanced case, the hardware lock is difficult to accurately detect the fundamental positive sequence phase. In the space vector PWM rectifier with decoupling control algorithm based on the software used in the PWM rectifier PLL control system, and use simulation and experimental verification of the feasibility. Experimental results show that the solutions to address the voltage and frequency fluctuations of the phase unbalanced three-phase synchronization issues, and the project has a certain reference value.)
- 2020-10-19 09:17:26下载
- 积分:1
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Ultrasonic-Ranging-Digital-Display
汽车倒车雷达的一个综合性的设计方案。可以适当解决您当前的困难。(A car reversing radar integrated design. You can adequately address the current difficulties.)
- 2014-03-06 18:22:30下载
- 积分:1
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Core8051_IS_UG
说明: 8051指令集,指令說明
ADD, CLR, MOV, MOVX,..等(Core 8051 Instruction Set Details
ADD, CLR, MOV, MOVX,..)
- 2020-06-17 02:00:01下载
- 积分:1
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ULA
已知:信号中心波长为2,天线阵元的间距为1米,快拍数为2000,空中有四个
源信号,假设它们的频率
四个源信号的方向分别为:
求:
1)在不加入噪声的情况下,观察并计算协方差矩阵特征值,并对它的特点
加以说明
2)分别采用MUSIC算法,CAPON算法, ESPRIT算法在下面四种情况下,对
上述四个信号源的波达方向进行估计,并画出它们的空间谱图;
①在不加入噪声的情况下,
②在加入高斯白噪声的情况下,假设信噪比为10dB
3)在信噪比变化范围为-20dB~+20dB时,分别采用MUSIC算法,CAPON算
法, ESPRIT算法,对上述四个信号源的波达方向进行估计,并画出波达方
向估计误差,随着信噪比变化的曲线图(即横轴为信噪比,纵轴为误差值)()
- 2008-07-01 16:10:08下载
- 积分:1
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ML5238-Ver1.0
5-16串电池管理方案,含原理图和芯片资料。具有电压测量、过充、过放、过流、均衡等功能。(5-16 string battery management solutions, including schematics and chip data. With voltage measurement, overcharge, over discharge, over current, balance and other functions.)
- 2020-12-14 18:09:14下载
- 积分:1
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electricmagnetic
一篇论文,是关于磁轴承的控制的,用的是经典的PID控制算法.名为<磁力轴承系统PID控制特性的研究>(A paper on the control of magnetic bearings, using a classical PID control algorithm. Entitled )
- 2008-05-18 01:36:27下载
- 积分:1
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underwater-acoustic-channel-modeling
厦门大学一篇关于水声信道建模的硕士论文,对水声信道建模有一定帮助。(Xiamen University, a master' s thesis on the underwater acoustic channel modeling, modeling of underwater acoustic channel some help.)
- 2020-11-03 12:09:52下载
- 积分:1
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56-M453
Battery Energy Storage System for Variable
Speed Driven PMSG for Wind Energy
Conversion System
- 2011-08-31 13:01:32下载
- 积分:1