Channel estimation method for MIMO-OFDM systems based on pilots and modified Kalman filter

Autor: SONG Tie-cheng, YOU Xiao-hu, SHEN Lian-feng, SONG Xiao-jin

Publikováno v: Tongxin xuebao, Pp 23-28 (2007)

A combined channel estimation method of time-frequency-selective fading channels in MIMO-OFDM systems was proposed.The time-varying channel was modeled as an autoregressive（AR） process and a low-dimensional Kalman filter based on pilots was used

Externí odkaz: https://doaj.org/article/ef7ac03cbc2649f4b847dfbcb2a911d0

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The distribution of large floating seagrass (Zostera marina) aggregations in northern temperate zones of Bohai Bay in the Bohai Sea, China.

Autor: Xu Min, Zhou Yi, Song Xiao-Jing, Zhang Yun-Ling, Zhang Hai-Peng

Publikováno v: PLoS ONE, Vol 14, Iss 3, p e0201574 (2019)

Seagrass meadows (Zostera marina) are important coastal ecosystems with high levels of productivity and biodiversity. They often have high biomass turnover and are susceptible to dislodgment, leading to export of biomass from seagrass beds. In Septem

Externí odkaz: https://doaj.org/article/18e855d5ca804d1da6199b8da6cf3b8d

Biallelic Heterozygous Mutations in Crumbs Homolog-1 Gene Associated With Macular Retinoschisis and Angle-Closure Glaucoma: A Case Report and Literature Review.

Autor: Sun JX; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Yan HX; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Hu D; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Zhou J; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Wang YS; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Wu J; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Song XJ; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China., Hou X; Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China.

Publikováno v: Frontiers in ophthalmology [Front Ophthalmol (Lausanne)] 2022 Jun 03; Vol. 2, pp. 902898. Date of Electronic Publication: 2022 Jun 03 (Print Publication: 2022).