Zobrazeno 1 - 10
of 326
pro vyhledávání: '"WANG Anyi"'
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 144-150 (2024)
A channel estimation method for intelligence reflecting surface (IRS) assisted mine communication system based on self supervised learning (SSL) is proposed to address the problems of multipath fading, non line of sight communication, and difficulty
Externí odkaz:
https://doaj.org/article/47385259e8ef4aa58324327aa12fd28f
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 5, Pp 120-126 (2023)
At present, most of the research on mine wireless signal detection only considers the ideal additive Gaussian white noise channel and Rayleigh fading channel. The signal detection has high bit error rate and complex network structure. In order to sol
Externí odkaz:
https://doaj.org/article/d3daf9edd2694894a56151aea80dbe01
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 5, Pp 127-132 (2023)
Due to space limitations, multi frequency multiple-input multiple-output (MIMO) antennas have strong coupling problems caused by small unit spacing. In order to solve the above problems, a mine high isolation tri-band MIMO antenna has been designed.
Externí odkaz:
https://doaj.org/article/f275392f12a24202ad1b7dc5871c09ce
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 7, Pp 125-129 (2022)
With the application of 5G technology in the coal mine, the signal interference between multiple systems becomes more and more intensive. This seriously affects the quality of data, voice and image communication. The coexistence of multiple systems i
Externí odkaz:
https://doaj.org/article/f6b82d65d3854c639f2296d9e1bd7a1b
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 1, Pp 91-97 (2022)
In the process of using optical fiber frequency shift value monitored by optical fiber sensor to characterize the strata behaviors law, the data collected by the sensor is missing, and the strata behaviors law can not be accurately predicted. In orde
Externí odkaz:
https://doaj.org/article/16c0494d38f14bf2bda16f7938cc908c
Autor:
WANG Anyi, ZHOU Xiaoming
Publikováno v:
Gong-kuang zidonghua, Vol 47, Iss 10, Pp 49-53 (2021)
In order to solve the problems of the complex modeling process, high computational complexity, and low prediction accuracy of the existing field strength prediction models, a mine roadway field strength prediction model based on improved convolutiona
Externí odkaz:
https://doaj.org/article/7650c3d2c3fc4d5f97659da02c61bef7
Publikováno v:
Gong-kuang zidonghua, Vol 47, Iss 6, Pp 109-115 (2021)
When the traditional adaptive OFDM (Orthogonal Frequency Division Multiplexing) modulation technology based on fixed signal-to-noise ratio threshold is applied to complex mine channels, the feedback channel state cannot completely match the actual ch
Externí odkaz:
https://doaj.org/article/01818db1895c44f398a6254702c87090
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 2, Pp 82-87 (2020)
In view of complex and heterogeneous wireless environment of mine, an underground signal recognition method based on higher-order cumulants and DNN model was proposed to realize automatic modulation recognition of underground digital signals of BPSK,
Externí odkaz:
https://doaj.org/article/51f4a7d5a747424d9e03cb52ca655ab4
Publikováno v:
Gong-kuang zidonghua, Vol 42, Iss 12, Pp 46-50 (2016)
In order to study propagation loss law of electric wave and improve prediction accuracy of field intensity coverage in mine tunnel, least square support vector machine (LS-SVM) method optimized by genetic algorithm was used to forecast underground fi
Externí odkaz:
https://doaj.org/article/7340f3a761724b35ad732fd5554b613e