Zobrazeno 1 - 10
of 15 523
pro vyhledávání: '"L Qian"'
Publikováno v:
Radioengineering, Vol 32, Iss 2, Pp 197-206 (2023)
Massive multi-input multioutput (MIMO) coupled with orthogonal frequency division multiplexing (OFDM) has been utilized extensively in wireless communication systems to investigate spatial diversity. However, the increasing need for channel estimate
Externí odkaz:
https://doaj.org/article/4f4ca983821a4cb4a285f9fc2ad4c33f
Autor:
D. Zhao, N. Wang, J. P. Yuan, D. Li, P. Wang, M. Y. Xue, W. W. Zhu, C. C. Miao, W. M. Yan, J. B. Wang, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, Y. T. Chen, S. J. Dang, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, M. Yuan, C. H. Niu, J. R. Niu, L. Qian, S. Wang, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, X. H. Yu, R. S. Zhao, R. Yuen, X. Zhou, L. Zhang, Y. B. Wang, J. F. Wu, Z. Y. Gan, Z. Y. Sun, C. J. Wang
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 2, p L39 (2024)
Externí odkaz:
https://doaj.org/article/8acf4a1765a04ef3ba77188e72e5b2a0
Autor:
D. Zhao, N. Wang, J. P. Yuan, D. Li, P. Wang, M. Y. Xue, W. W. Zhu, C. C. Miao, W. M. Yan, J. B. Wang, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, Y. T. Chen, S. J. Dang, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, M. Yuan, C. H. Niu, J. R. Niu, L. Qian, S. Wang, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, X. H. Yu, R. S. Zhao, R. Yuen, X. Zhou, L. Zhang, Y. B. Wang, J. F. Wu, Z. Y. Gan, Z. Y. Sun, C. J. Wang
Publikováno v:
The Astrophysical Journal Letters, Vol 964, Iss 1, p L7 (2024)
We report the timing analysis of PSR J1846−0513, a pulsar discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar possesses a spin period of 23.36 ms and a spin-down rate (
Externí odkaz:
https://doaj.org/article/25d8511d1b45400ca7fe662b28d2fb88
Publikováno v:
AMB Express, Vol 13, Iss 1, Pp 1-15 (2023)
Key points Application of the PGPR significantly increased the population of the Bacillus and Pseudomonas genus. Application of the PGPR induced the growth of other beneficial bacteria. The PGPR have potential role as a ripening enhancer.
Externí odkaz:
https://doaj.org/article/63d792d6a8e94a6a9199e8028c28271f
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 1705-1730 (2023)
This work uses 17 years of upper mesospheric carbon monoxide (CO) and temperature observations by the microwave limb sounder (MLS) on-board the Aura satellite to present and explain the seasonal and interannual variability of the migrating diurnal ti
Externí odkaz:
https://doaj.org/article/a0b1f2bfc8e040a59c9bf1f6afaaf658
Publikováno v:
Radioengineering, Vol 31, Iss 4, Pp 510-519 (2022)
Phase noise (PN) consists of common phase error (CPE) and inter carrier interference (ICI). In an OFDM symbol, CPE has the same impact on each subcarrier, which is easy to be suppressed. However, ICI destroys the orthogonality of subcarriers, which i
Externí odkaz:
https://doaj.org/article/29505014b9414433bfd9fe499bf9c1e5
Classification Weighted Deep Neural Network Based Channel Equalization for Massive MIMO-OFDM Systems
Publikováno v:
Radioengineering, Vol 31, Iss 3, Pp 346-356 (2022)
Massive multi-input multi-output (MIMO) has attracted significant interest in academia and industry, which can efficiently increase the transmission rate. However, the error rate of conventional channel equalizations in massive MIMO systems may be hi
Externí odkaz:
https://doaj.org/article/17f99eac03ef4bd2a51593220e9faa4d
Autor:
Q. Gan, J. Oberheide, L. Goncharenko, L. Qian, J. Yue, W. Wang, W. E. McClintock, R. W. Eastes
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract Using observations from the Global‐scale Observations of the Limb and Disk (GOLD) mission, we investigate post‐sunset ionospheric responses to the September 2019 Antarctic sudden stratospheric warming –first ever from a synoptic perspe
Externí odkaz:
https://doaj.org/article/8f9d9b805ce44a20841fc173e5819173
Autor:
D. Zhao, J. P. Yuan, N. Wang, D. Li, P. Wang, M. Y. Xue, W. W. Zhu, C. C. Miao, W. M. Yan, J. B. Wang, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, Y. T. Chen, S. J. Dang, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, M. Yuan, C. H. Niu, J. R. Niu, L. Qian, S. Wang, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, X. H. Yu, R. S. Zhao, R. Yuen, X. Zhou, L. Zhang, M. Xie, Y. X. Li, Y. B. Wang, Z. K. Luo, Z. Y. Gan, Z. Y. Sun, M. M. Chi, C. J. Wang
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 88 (2024)
We present phase-connected timing ephemerides, polarization pulse profiles, and Faraday rotation measurements of 12 pulsars discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey. T
Externí odkaz:
https://doaj.org/article/284aaa634b0240e7a19ce2b41f3a1b5c
Autor:
S. B. Zhang, J. J. Geng, J. S. Wang, X. Yang, J. Kaczmarek, Z. F. Tang, S. Johnston, G. Hobbs, R. Manchester, X. F. Wu, P. Jiang, Y. F. Huang, Y. C. Zou, Z. G. Dai, B. Zhang, D. Li, Y. P. Yang, S. Dai, C. M. Chang, Z. C. Pan, J. G. Lu, J. J. Wei, Y. Li, Q. W. Wu, L. Qian, P. Wang, S. Q. Wang, Y. Feng, L. Staveley-Smith
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 59 (2024)
Rotating radio transients (RRATs) are neutron stars that emit sporadic radio bursts. We detected 1955 single pulses from RRAT J1913+1330 using the 19 beam receiver of the Five-hundred-meter Aperture Spherical radio Telescope. These pulses were detect
Externí odkaz:
https://doaj.org/article/0e025a96223b4c4490a1e6d666864523