Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Jiaqi Zhen"'
Autor:
Chao Liu, Jiaqi Zhen
Publikováno v:
IEEE Access, Vol 11, Pp 69091-69100 (2023)
Traditional beamforming algorithms are only applicable to ideal environments. When the array antenna receives data under circumstances of small snapshots or large signal-to-noise ratio(SNR), noise eigenvalues of classic sample matrix inversion(SMI) a
Externí odkaz:
https://doaj.org/article/e596d8a62e844eac9ef2397493e22075
Autor:
Jiaqi Zhen, Xiaoli Zhang
Publikováno v:
IEEE Access, Vol 8, Pp 155951-155960 (2020)
Knowing number of nodes is the precondition of their locating and estimation of other parameters in wireless sensor network, actually it can be evaluated according to the signal received by the sensor array. The popular algorithms are only appropriat
Externí odkaz:
https://doaj.org/article/5cdb056efaf543439603b4f012a88373
Autor:
Jiaqi Zhen
Publikováno v:
IEEE Access, Vol 7, Pp 128676-128683 (2019)
The conventional algorithms for estimating number of array signals are only suitable for the background of Gaussian white noise, and need many snapshots, but their performance will reduce seriously in the circumstance of impulse noise and small sampl
Externí odkaz:
https://doaj.org/article/7d6e7fff6fac4f3e8ac47421eafd6f68
Autor:
Baoyu Guo, Jiaqi Zhen
Publikováno v:
IEEE Access, Vol 7, Pp 172709-172717 (2019)
An algorithm based on back propagation neural network and particle swarm optimization is proposed to solve the direction of arrival (DOA) estimation of coherent signals received by the sensor array in colored noise environment. First, a spatial diffe
Externí odkaz:
https://doaj.org/article/9f4684db22eb496aa4d09082d6f20790
Autor:
Jiaqi Zhen
Publikováno v:
IEEE Access, Vol 7, Pp 105354-105362 (2019)
For the sake of positioning the illegal unmanned aerial vehicle operators, the paper proposes a direction of arrival (DOA) estimation algorithm based on the reconnaissance plane with multiple array sensors. First, the number of unmanned aerial vehicl
Externí odkaz:
https://doaj.org/article/23d51b404db84b4d954024603255fe19
Autor:
Jiaqi Zhen, Baoyu Guo
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2018, Iss 1, Pp 1-10 (2018)
Abstract Mutual coupling and gain-phase errors are very common in sensor channels for array signal processing, and they have serious impacts on the performance of most algorithms, especially in practical applications. Therefore, a new approach for di
Externí odkaz:
https://doaj.org/article/5b9e58e9d39f4bfe8540dcb94c599161
Autor:
Jiaqi Zhen
Publikováno v:
International Journal of Antennas and Propagation, Vol 2016 (2016)
Knowing source number correctly is the precondition for most spatial spectrum estimation methods; however, many snapshots are needed when we determine number of wideband signals. Therefore, a new method based on Bootstrap resampling is proposed in th
Externí odkaz:
https://doaj.org/article/22936389eeb64c898c33c720d6cebce2
Publikováno v:
Wireless Communications and Mobile Computing, Vol 2021 (2021)
With the improvement of living standard and the development of science and technology, Internet of Vehicle (IOV) will play an important part in industrial transportation as a main research field of Internet of Things. As a result, it is very necessar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32cbd29197b9493d46759db81787031f
https://doi.org/10.1155/2021/8241773
https://doi.org/10.1155/2021/8241773
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-7 (2024)
Abstract Unicystic ameloblastoma (UAM) of the jaw can be effectively reduced in volume through decompression, which promotes bone regeneration and restores jaw symmetry. This study quantitatively evaluated changes in mandible volume and symmetry foll
Externí odkaz:
https://doaj.org/article/010f2ae591a546b7bceea6b45afc03db