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机器学习_周志华(1)
说明： 人工智能学习入门书籍，经典西瓜书，对于基础的人工智能学习有较为有用的帮助。(The introduction book of artificial intelligence learning, classic watermelon book, has more useful help for the basic artificial intelligence learning.)
- 2020-11-23 13:17:20下载
- 积分：1
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射频卡资料，philips公司的，希望对大家有用
射频卡资料，philips公司的，希望对大家有用-RF card, philips company, in the hope that useful to everybody
- 2022-03-24 19:38:52下载
- 积分：1
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32281096gps
导航接收机抗干扰，抗压制式干扰，运用matlab编程(Navigation receiver anti-jamming, compression system interference, using MATLAB programming)
- 2017-11-09 10:46:20下载
- 积分：1
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清华大学足球机器人大赛程序。
清华大学足球机器人大赛程序。-Qinghua University soccer robot competition procedures.
- 2022-06-27 15:15:40下载
- 积分：1
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Lpfilter_20190503
说明： 环路滤波器是通信信号调制解调中最重要的一个部分，环路滤波器设计的好坏将直接影响到接收机的性能指标，二阶锁频辅助三阶锁相环路滤波器可以稳定跟踪具有加加速度的信号源，是现代通信中非常实用的技术，本文中详细编写了单载波信号产生模块、信道噪声模块、数字正交下变频模块、鉴频鉴相模块、环路滤波器模块，并包含了完整的testbench模块，对于初学者非常有用。(Loop filter is the most important part of communication signal modulation and demodulation. The design of loop filter will directly affect the performance index of receiver. The second-order frequency locking assisted third-order phase-locked loop filter can stably track the signal source with acceleration speed, which is a very practical technology in modern communication. In this paper, the single carrier signal generation module and channel noise are written in detail Sound module, digital orthogonal down conversion module, frequency and phase detection module, loop filter module, and contains a complete testbench module, which is very useful for beginners.)
- 2020-11-11 01:27:25下载
- 积分：1
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Calculator
計算機，可以自行延伸，很簡單的寫法，希望可以幫助有需要的人(Computer, you can extend its own, very simple wording, I hope to help people in need)
- 2013-08-23 23:14:55下载
- 积分：1
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TEST_TCP
说明： 使用C# 实现上位机通过TCP进行通讯模块，(Realizing the Communication Module of Upper Computer through TCP)
- 2020-06-23 20:40:01下载
- 积分：1
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无线局域网仿真
WLAN仿真－发送机
wlan No Comments
设置完系统参数后，开始产生发送数据。
1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波，形成OFDM符号
4. 产生pilot，并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft，将频域信号变到时域，并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamble
9. 在时域产生long preamble
10. 将preamble和数据符号组成packet
11. 升采样
得到信道传输的数据Tx_signal_up
具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling re
- 2022-03-17 11:21:25下载
- 积分：1
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SPA_decode
说明： LDPC软判决译码：和积算法的matlab代码。(LDPC soft decision decoding: matlab code of sum product method.)
- 2020-04-14 22:06:20下载
- 积分：1
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二维笛卡尔坐标系下的网格划分
二维笛卡尔坐标系下网格的划分，包括多重网格等。-Two-dimensional Cartesian coordinate system,
the division of the grid, including the multi-grid and so on
- 2022-02-09 20:35:53下载
- 积分：1
