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microwave
简明微波讲义，比较实用。希望对大家有用！(Microwave concise notes, more practical. Hope it useful!)
- 2011-06-07 11:56:45下载
- 积分：1
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MODBUS
modbus串口通讯动态链接库
使用同步通讯方式
(modbus serial communication dynamic link library using synchronous communication mode)
- 2013-06-05 12:57:22下载
- 积分：1
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lmsfilter1
自己编的lms算法，用于扩频通信抑制窄带干扰的时域预测仿真(Own the lms algorithm for narrowband interference suppression spread spectrum communication time-domain simulation of the forecast)
- 2020-11-15 17:39:41下载
- 积分：1
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Study-on-the-Control-Scheme
恒频恒压(CVCF)逆变电源的输出电压波形质量是衡量其性能的重要指标之一。文章采用一种重复控制和双闭环控制相结合的电压波形控制策略，以重复控制器提高逆变电源输出电压的稳态精度，减小总谐波畸变率；以双闭环控制器达到较快的动态响应速度。该方案在一台采用TMS320F240 DSP控制芯片的50 Hz三相PWM逆变器上得到验证。(Constant voltage constant frequency (CVCF) Inverter output voltage waveform quality is an important measure of its performance indicators. Paper using a repetitive control and the combination of double closed loop control voltage waveform control strategy to improve the repetitive controller output voltage inverter steady-state accuracy and reduce total harmonic distortion to achieve a faster dual-loop controller dynamic response speed. The program uses TMS320F240 DSP in a 50 Hz phase control chip PWM inverter has been to verify.)
- 2011-05-17 11:02:50下载
- 积分：1
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64QAM
说明： 64QAM的调制解调程序，用硬判决(Of 64QAM modulation and demodulation process, with a hard decision)
- 2008-10-19 11:57:00下载
- 积分：1
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rs
说明： rs编解码，对实现了rs码的编解码，并对其误码率进行了分析仿真(rs codec, to the achievement of the rs code coding and decoding, and BER analysis simulation)
- 2008-11-22 10:32:37下载
- 积分：1
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ourdev_591812L2P7LR
说明： 51MODBUS从机程序源码希望对有用的人有用，，(51MODBUS,welcom to here,thank you very mouch.)
- 2020-06-21 21:40:01下载
- 积分：1
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HJQE2
说明： pcm编码 有关线性,A律,mu律的pcm编码的matlab实现(Matlab implementation of pcm coding for pcm coding related to Linear, A-Law and mulaw)
- 2019-03-26 22:28:19下载
- 积分：1
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BPSK调制仿真
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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communication
针对通信侦查课题，通过已知先验知识和截获信号，进行找出同步序列，匹配滤波，校正频偏和相偏，均衡，解交织，译码，恢复出原序列，最终得到的序列与原序列作对比得到误码率为0(Investigation subject for the communication, by known a priori knowledge and intercepted signal conducted to identify the synchronization sequence, the matched filter, correcting frequency offset, and phase deviations, balanced, deinterleaving, decoding, to recover the original sequence, the resulting sequence with the original sequence compared error rate is 0)
- 2012-08-21 22:22:08下载
- 积分：1
