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Antenna_polarization_3D.m
说明: 均匀平面天线阵列的三维极化方向图,matlab语言。(Antenna Polarization for Uniform Planar Array)
- 2020-11-25 11:19:32下载
- 积分:1
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OPCClient
本OPC Client程序基于OPC DA 2.0开发制作。其操作方式和功能均按照OPC的测试工具OPC client模仿编写。(The program is based on OPC Client OPC DA 2.0 development and production. Its mode of operation and functional test tools in accordance with OPC OPC client imitate write.)
- 2015-05-03 17:48:29下载
- 积分:1
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step_filter
HFSS 高低阻抗滤波器 5节,可调参数,优化(HFSS high and low impedance filter 5, adjustable parameters, optimization)
- 2009-12-19 09:45:30下载
- 积分:1
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AM调制
AM调制与解调,信息信号和载波信号经过AM调制并加噪得到AM信号的频谱,再经过带通滤波器,相干解调,低通滤波后得到解调后的信号。(AM modulation and demodulation, information signal and carrier signal through AM modulation and noise to get the spectrum of AM signal, then through band-pass filter, coherent demodulation, low-pass filter to get the demodulated signal.)
- 2020-07-31 10:18:38下载
- 积分:1
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paper5
Analyses and performance of techniques PAPR reduction for STBC MIMO-OFDM system in (4G) wireless communication
- 2015-03-22 00:49:55下载
- 积分:1
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HelloSMS
wince傳送簡訊的範例,利用vs 2005編譯開發(wince newsletter send an example, using vs 2005 to compile the development of)
- 2008-08-05 16:43:11下载
- 积分:1
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BPSK调制仿真
说明: bpsk调制仿真,可直接用
1、数字调制方法
数字调制就是把数字基带信号的频谱搬移到高频处,形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控(ASK)、频移键控(FSK)、绝对相移键控(PSK)、相对(差分)相移键控(DPSK)。在接收端可以采用想干解调或非相干解调还原数字基带信号。
数字信号的传输方式分为基带传输和带通传输。然而,实际中的大多数信道(如)无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输,必须用数字基带信号对载波进行调制,以使信号与信道的特性相匹配。(1, digital modulation method
Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation.
Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)
- 2019-05-28 10:46:01下载
- 积分:1
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MModBus_TestO
modscan32是modbus/tcp以太网通讯调试工工具,如同串口调试助手一样的工具.,
(modscan32 is modbus/tcp ethernet communication tools, debugging tools tools like serial debugging aides.)
- 2012-08-06 23:21:29下载
- 积分:1
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LFM
脉冲压缩的匹配滤波。目标距离分别为10米,30米和100米,对于未压缩的脉冲,三个回波信号混叠在一起,不能分辨,而经过脉冲压缩的脉冲信号则可通过匹配滤波收到3个回波信号(Matched filtering for pulse compression.Target distances are 10 metres, 30 metres and 100 metres, respectively. For uncompressed pulses,The three echo signals are overlapped and can not be distinguished. While pulse compression can distinguish three echo signals after matched filtering)
- 2021-04-15 20:38:54下载
- 积分:1
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mobileschme
说明: 完整的手机主题网站,功能完善,并且有大量资源(Complete cell phone theme of site, function perfect, and there is a lot of resources)
- 2008-10-31 09:21:50下载
- 积分:1