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卫星通信中数字调相信号调制方式识别方法研究
针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)
- 2020-06-21 09:20:02下载
- 积分：1
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ZigBee
ZigBee tutorial, good for a short finalt graduate course work
- 2009-09-29 05:04:33下载
- 积分：1
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OFDM-Simulink-
电力线信道模型下OFDM通信系统的Simulink仿真研究，值得大家参考(Power line channel model Simulink Simulation of the OFDM communication system, it is worth reference)
- 2013-05-01 08:55:37下载
- 积分：1
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Beamforming
波速成型算法、麦克风阵列语音信号技术相关文档以及webrtc相关文档(Wave speed forming algorithm, microphone array voice signal technology related documents and webrtc related documents)
- 2018-03-08 15:09:28下载
- 积分：1
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Satellite-FDM-examples
说明： 频分复用信号的生成以及演示，与英文工具书匹配，很好用！(FDM signal generation)
- 2020-06-24 23:20:02下载
- 积分：1
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心电信号分析方法研究(含matlab代码)
说明： 心电信号预处理方法研究，内含MATLAB仿真代码与研究文档。(Research on ECG signal preprocessing method, including MATLAB simulation code and research documents.)
- 2020-06-23 18:40:01下载
- 积分：1
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starbucks
it is a discription of starbucks supplychain managment system
- 2013-01-18 23:52:04下载
- 积分：1
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OQAM_OFDM_IOTA
基于OFDM/OQAM 的IOTA原型滤波器设计(IOTA prototype filter design based on OFDM/OQAM)
- 2020-07-02 18:20:01下载
- 积分：1
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MIMO OFDM
实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀；接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并，空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100，每个子载波传输66个符号，每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM communication system based on STBC under different SNR is realized. The transmitter includes baseband modulation, space-time coding, pilot insertion, IFFT, serial-parallel combination and adding cyclic prefix; the receiver includes removing cyclic prefix, extracting pilot estimation channel, FFT operation, parallel-serial combination, space-time decoding, etc. The complex orthogonal space-time coding matrix is used in QPSK and space time coding in 4*3. The number of OFDM subcarriers is 100, and each subcarrier transfers 66 symbols with 2 bits per symbol. IFFT is 512 symbols in length. The transmitting antenna is 3 receiving antennas, 2.)
- 2020-12-07 16:19:21下载
- 积分：1
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2.4GHz-Invert-F-Antenna-Design
zigbee 2.4GHz 倒F天线设计技术文档(zigbee 2.4GHz Invert F antenna design refrence)
- 2021-04-02 18:39:07下载
- 积分：1
