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a_project_of_mobile_compny
THIS IS A PROJECT OF A MOBILE COMPANY
- 2012-11-21 02:17:28下载
- 积分:1
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CVI_rs232
Labwindows CVI 中不错的串口编程,串口调试(Good serial programming Labwindows CVI, serial debugging
)
- 2020-07-07 23:18:57下载
- 积分:1
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FMradio
simulink仿真收音机链路FM radio(Simulink simulation radio link)
- 2017-12-01 10:02:29下载
- 积分:1
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Min-sum_1
说明: ldpc最小和译码算法,能够有效完成译码(LDPC minimum sum decoding algorithm can effectively complete decoding)
- 2019-03-08 18:51:09下载
- 积分:1
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channel_estimated_C
GSM信道估计,c实现,包含详细的报告说明,很全。(GSM channel estimation, c achieve, contains a detailed description of the report, it is.)
- 2020-07-03 23:40:02下载
- 积分:1
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GF2_DLL
说明: Download and Install Matlab r2015a Full - Duration
- 2019-09-25 10:56:43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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bpsk_awgn
BPSK调制方式AWGN信道的理论误码率、仿真误码率以及瑞利信道下的理论值和仿真误码率(Theoretical BER of BPSK modulation AWGN channel BER simulation and theoretical value of the Rayleigh channel simulation error rate)
- 2021-01-16 21:38:46下载
- 积分:1
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李纯明博B
说明: 李纯明博士的图像分割源代码,可以分割各种图像,可运行。(Dr. Li Chunming image segmentation source code, can be divided into a variety of images, can run.)
- 2020-06-19 18:38:36下载
- 积分:1
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51单片机和三菱变频器MODBUS RTU通信实例
51单片机和三菱变频器MODBUS RTU通信实例,里面有具体的通讯范例,方便初学者学习(51 single-chip microcomputer and mitsubishi inverter MODBUS RTU communication as an example, there is a specific communication paradigm, easy for beginners to learn)
- 2020-06-28 10:40:02下载
- 积分:1