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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
说明： 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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WCDMA-Call-Drop-KPI-and-Relative-Counters
CALL DROP KPIS AND RELATIVE COUNTERS
- 2018-12-11 16:35:21下载
- 积分：1
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HCF-Spec190-(Block-Data-Transfer-Specification)
HART Communication Foundation - Block Data Transfer Specification
- 2020-11-20 14:49:36下载
- 积分：1
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ra
说明： repeat-accumulate codes (RA codes)
- 2017-03-24 15:05:21下载
- 积分：1
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DWellsThesis
This thesis presents simulation data on array operation in wideband communication systems.
It is shown that array structures with closer inter-element spacing outperform structures with
much larger inter-element spacing. It is also shown that circular structures outperform linear
structures. This performance di erence between the classi cations of arrays is due largely
to the circular array s ability to handle high levels of interference. Even though a diversity
combining scheme (MRC) was used in the simulator, the arrays provided interference rejection
capabilities due to the closely spaced antenna elements.
- 2010-01-01 00:56:28下载
- 积分：1
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DTL645-2007
多功能电能表通信协议_645-2007.pdf(Multi-function watt-hour meter communication protocol _645-2007.pdf)
- 2012-07-07 00:16:31下载
- 积分：1
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ch03
杨建国老师的通讯原理课件，第三章模拟信号的调制与解调，主要讲述信号产生与调制，射频特性，解调，MSK、GMSK、PSK、QPSK、BPSK、QAM等原理(Yang Jianguo teacher communication principles of courseware, the third chapter of the analog signal modulation and demodulation, and focuses on the signal generation and modulation, the RF characteristics, demodulation, MSK, GMSK, PSK, QPSK, as BPSK, QAM and other principles of)
- 2012-06-12 10:45:39下载
- 积分：1
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energie
nuclear energie in the industry
- 2009-06-05 02:17:31下载
- 积分：1
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CCSDS_LDPC
说明： CCSDS推荐的LDPC编码方案，一系列参考标准，很好哦！(CCSDS recommended LDPC coding scheme, a series of reference standards, very good!)
- 2020-06-15 23:00:02下载
- 积分：1
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NFC3
NFC协议第三部分，描述了NFC tag 2 通讯协议(NFC protocol third part describes the communication protocol NFC tag 3)
- 2016-06-26 11:23:02下载
- 积分：1
