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mod_demod
在matlab环境下实现通信系统中的BPSK，QPSK，16QAM，调制。成型滤波和匹配滤波都采用根升余弦函数。(In the matlab environment to achieve communication system BPSK, QPSK, 16QAM, modulation. Shaping filter and matched filter are used root raised cosine function.
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- 2010-12-01 23:28:12下载
- 积分：1
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MATLAB-detection-of-signal
关于常规信号，线性调频信号和相位编码信号的检测和估计(detection and analaysis of normal signal, LFM and phase coding signal.)
- 2012-05-04 11:37:27下载
- 积分：1
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33356
运用labview开发环境，实现串口通讯，接受串口发送接收的数据(Development environment using labview, serial communications, sending and receiving serial data received
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- 2012-01-09 10:30:09下载
- 积分：1
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PuncturedConvolutionalCodes
删除卷积码的译码算法，分析其删除原理，给出常用删除模式(Punctured Convolutional code decoding algorithms, to analyze the deletion of principle, given the deletion of common mode)
- 2009-06-09 23:34:30下载
- 积分：1
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QPSK_64Carrier_fd1000
在瑞丽衰落 =信道下，对信号进行qPSK调制(qpsk for relaygh channel)
- 2017-08-15 10:07:18下载
- 积分：1
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使用FFT算法求两个信号的时频二维（互模糊）函数 fft_ambig
matlab中使用FFT算法求两个信号的时频二维（互模糊）函数，可以实现信号的时延、多普勒频移联合估计（需要根据实际场景适当修改参数）(oint estimation matlab frequency two-dimensional FFT algorithm seeking the two signals (cross ambiguity) function, signal delay, Doppler shift)
- 2021-04-25 16:28:46下载
- 积分：1
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OFDM_CE
说明： 基于梳状导频的LS信道估计算法与无信道估计算法性能对比(Performance Comparison between LS Channel Estimation Algorithm and Channelless Estimation Algorithm Based on Comb Pilot)
- 2020-11-29 12:49:30下载
- 积分：1
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4FSK-demodulation-and-modulation
4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。(Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal.)
- 2020-11-19 10:09:37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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verilog HDL
说明： DS18B20温度模块，LCD1602显示(DS18B20 Temperature Module, LCD1602 Display)
- 2020-09-04 15:08:06下载
- 积分：1
