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明泰读卡器
对铭泰读卡器不同扇区进行读写操作,初始化扇区,扇区信息加密。(Reading and Writing Mingtai Card Reader)
- 2020-06-17 19:40:01下载
- 积分:1
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CH5
多输入多输出系统不同收发天线对系统性能的影响(Multiple-input multiple-output system transceiver antenna different impact on system performance)
- 2009-03-17 17:51:27下载
- 积分:1
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ModbusRTU_attiny44
MODBUS RTU using Attiny44 from Atmel
- 2013-08-30 22:21:27下载
- 积分:1
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mangfenli
本程序主要使用matlab语言描述了信号调制方式是别的过程,当信噪比大于10时可以实现对所选信号调制方式的识别(signal processing matlab large than 10dB)
- 2011-12-11 15:43:07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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S5335DK_Software_v1_2
The PCI Local bus concept was developed to break
the PC data I/O bottleneck and clearly opens the door
to increasing system speed and expansion capabilities.
The PCI Local bus moves high speed peripherals
from the I/O bus and places them closer to the system’s
processor bus, providing faster data transfers
between the processor and peripherals. The PCI Local
bus also addresses the industry’s need for a bus standard
which is not directly dependent on the speed,
size and type of system processor. It represents the
first microprocessor independent bus offering performance
more than adequate for the most demanding
applications such as full-motion video.(The PCI Local bus concept was developed to breakthe PC data I/O bottleneck and clearly opens the doorto increasing system speed and expansion capabilities.The PCI Local bus moves high speed peripheralsfrom the I/O bus and places them closer to the system sprocessor bus, providing faster data transfersbetween the processor and peripherals. The PCI Localbus also addresses the industry s need for a bus standardwhich is not directly dependent on the speed, size and type of system processor. It represents thefirst microprocessor independent bus offering performancemore than adequate for the most demandingapplications such as full-motion video.)
- 2008-01-08 10:58:20下载
- 积分:1
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gun_na37
pwm整流器的建模仿真,感应双馈发电机系统的仿真,复化三点Gauss-lengend公式求pi。( Modeling and simulation pwm rectifier Simulation of doubly fed induction generator system, Complex of three-point Gauss-lengend the Formula pi.)
- 2017-05-10 10:04:05下载
- 积分:1
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psk
说明: 实现蒙特卡罗分析,可以直接调用进行对误码率等数字通信的相关参数分析(The realization of the Monte Carlo analysis, can directly call on the bit error rate for digital communications, such as analysis of relevant parameters)
- 2008-08-30 16:08:38下载
- 积分:1
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LDPC
说明: 实现LDPC信道码的仿真,已在大型软件开发项目中实用(LDPC code and decode
matlab)
- 2020-11-30 16:47:58下载
- 积分:1
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88658438l1_OMP_matlab
说明: 基于Matlab的压缩感知信道估计算法 基于导频的信道估计 MMSE算法(Compressed Sensing Channel Estimation Based on MATLAB)
- 2021-01-06 16:48:53下载
- 积分:1