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2008_3
（1）请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。
（2）在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与(1)的曲线进行对比。
((1) derived from single-Path Rayleigh channel coherent demodulation of BPSK theoretical bit error rate performance and draw-bit signal to noise ratio and bit error rate curve. (2) in a single Path Rayleigh channel, please design a guided night-assisted channel estimation methods, using Simulink simulation, surveying BPSK BER performance, drawn-bit signal to noise ratio and bit error rate curve, and with (1) comparing the curve.)
- 2020-11-30 15:49:27下载
- 积分：1
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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分：1
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12493618_EIbPLiNcTreXgYmkQDgYYXpEi
说明： 利用叠加法pm谱，生成三维海浪波形的源程序，输入风级数，频率数和角度数得到该风级下的海浪波形；(Using the superposition method PM spectrum, the source program of three-dimensional wave waveform is generated, and the wave waveform under the wind level is obtained by inputting the number of wind level, frequency and angle;)
- 2021-02-09 17:54:32下载
- 积分：1
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SLM算法
SLM算法降低OFDM通信系统中的PAPR，使用matlab进行仿真(SLM algorithm reduces PAPR in OFDM communication system, and matlab is used for simulation)
- 2019-04-09 16:23:30下载
- 积分：1
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编码识别(matlab代码)20180111
说明： 卷积码、RS码、LDPC码、turbo码的生成及识别。(Generation and recognition of convolutional codes, RS codes, LDPC codes and TurBO codes.)
- 2021-04-14 18:58:55下载
- 积分：1
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QPSK定时同步代码，采用Gardner定时同步算法 qpsk_demod
QPSK定时同步代码，采用Gardner定时同步算法，Farrow插值算法(QPSK timing synchronization code, using Gardner timing synchronization algorithm, Farrow interpolation algorithm)
- 2021-02-03 10:19:59下载
- 积分：1
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代码
圆形阵列的方向图matlab程序，加注释，可以修改相关参数。(The circular array pattern matlab program, plus annotations, can modify the relevant parameters.)
- 2021-04-26 09:18:45下载
- 积分：1
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phone_com
一个基于串口的手机短信发送/接收程序；Demo很简单，是以异步方式读写串口的；在对话框初始化中修改串口的配置参数正确后，能100％的正常发送/接收短信。
(A message based on the serial port of the mobile phone to send/receive process Demo is very simple, based on asynchronous serial reading and writing in the dialog box to initialize the serial port to modify configuration parameters correct to 100 of the normal Send/receive message.)
- 2008-07-13 18:24:26下载
- 积分：1
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GTM900AT
华为GTM900AT命令手册，对开发GPRS具有指导意义(Huawei GTM900 AT command manual，It has a guiding significance to develop GPRS
)
- 2012-12-06 16:48:43下载
- 积分：1
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src
103转modbus协议C程序，支持多个485端口并能够配置(103 turn modbus protocol C program, more than 485 ports and supports the ability to configure)
- 2013-12-19 15:15:07下载
- 积分：1
