Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Shunsuke Fujio"'
Autor:
Shunsuke Fujio, Kazuyuki Ozaki
Publikováno v:
2022 25th International Symposium on Wireless Personal Multimedia Communications (WPMC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c35b86677b209f8d54c74d14096e858d
https://doi.org/10.1109/wpmc55625.2022.10014720
https://doi.org/10.1109/wpmc55625.2022.10014720
Autor:
Shunsuke Fujio, Kazuyuki Ozaki
Publikováno v:
PIMRC
This paper considers beamforming training methods for mobile access network systems in high frequency bands such as millimeter wave bands. A two-stage beamforming training method is an attractive one to find the desired beam quickly, where the initia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69cd140e3a9d58dac1d08bc59031ec3c
https://doi.org/10.1109/pimrc48278.2020.9217054
https://doi.org/10.1109/pimrc48278.2020.9217054
Autor:
Masahiko Shimizu, Shunsuke Fujio
Publikováno v:
PIMRC
This paper considers millimeter-wave access network systems using an interleaved hybrid beamforming structure (IL-HBF). The IL-HBF is a combination structure of digital and analog beamformers and antenna elements in each subarray scatter uniformly ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8af7ab52b781462adb026245cb487cd
https://doi.org/10.1109/pimrc.2018.8580925
https://doi.org/10.1109/pimrc.2018.8580925
Autor:
Hikaru Ishikawa, Yoji Ohashi, Toshihiro Shimura, Kenichi Nishikawa, Shohei Ishikawa, Kazuyuki Ozaki, Takenori Ohshima, Masahiko Shimizu, Shunsuke Fujio
Publikováno v:
2018 13th European Microwave Integrated Circuits Conference (EuMIC).
We propose a transmitter configuration with a phase-adjusting function between subarrays for beam multiplexing. We demonstrate a 28-GHz CMOS phased array chip with a phase-adjusting function for a beam-multiplexing transmitter. The phased array chip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd08bbf9e7ee3e0bfceb6a01b3eb8c9c
https://doi.org/10.23919/eumic.2018.8539933
https://doi.org/10.23919/eumic.2018.8539933
Publikováno v:
IEICE Transactions on Communications. :1456-1464
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a8341fe512b729b399d10f535036ad
https://doi.org/10.1587/transcom.e98.b.1456
https://doi.org/10.1587/transcom.e98.b.1456
Autor:
Masahiko Shimizu, Yoji Ohashi, Takenori Ohshima, Hiroshi Ashida, Toshihiro Shimura, Kenichi Nishikawa, Chikara Kojima, Shunsuke Fujio, Shohei Ishikawa, Zhengyi Li, Atsushi Honda, Kazuyuki Ozaki
Publikováno v:
PIMRC
In this paper, we propose a novel two-step beam search method for multi-user in millimeter-wave communication and show the experimental evaluation. The numbers of search beams in the first and second steps are theoretically optimized. The evaluation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ee5fa4ffd5de7975e539c46521c1af9
https://doi.org/10.1109/pimrc.2017.8292208
https://doi.org/10.1109/pimrc.2017.8292208
Autor:
Takenori Ohshima, Zhengyi Li, Kazuyuki Ozaki, Atsushi Honda, Hiroshi Ashida, Chikara Kojima, Masahiko Shimizu, Kenichi Nishikawa, Shohei Ishikawa, Toshihiro Shimura, Yoji Ohashi, Shunsuke Fujio
Publikováno v:
PIMRC
The research on millimeter-wave communication is very hot all over the world because of the large bandwidth and beamforming. However, the high power consumption due to the large number of high speed DACs/ADCs is the obstacle of utilizing full digital
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef9480db222eda9e8d51e51a6495ed5b
https://doi.org/10.1109/pimrc.2017.8292487
https://doi.org/10.1109/pimrc.2017.8292487
System validation of millimeter-wave beam multiplexing with interleaved hybrid beam-forming antennas
Autor:
Atsushi Honda, Kazuyuki Ozaki, Chikara Kojima, Zhengyi Li, Toshihiro Shimura, Takenori Ohshima, Masahiko Shimizu, Kenichi Nishikawa, Hiroshi Ashida, Shohei Ishikawa, Shunsuke Fujio, Yoji Ohashi
Publikováno v:
PIMRC
This paper describes beam division multiplexing at millimeter wave band using interleaved hybrid beam-forming (BF) antennas. The antenna elements are located alternately to make narrow beam-width of about 5 degrees, and the user multiplexing calculat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f8333f1a6913933f0cfcff1389251e6
https://doi.org/10.1109/pimrc.2016.7794711
https://doi.org/10.1109/pimrc.2016.7794711
Autor:
Toshihiro Shimura, Shunsuke Fujio, Hiroshi Ashida, Atsushi Honda, Kenichi Nishikawa, Chikara Kojima, Zhengyi Li, Yoji Ohashi, Takenori Ohshima, Masahiko Shimizu, Shohei Ishikawa, Kazuyuki Ozaki
Publikováno v:
PIMRC
This paper considers millimeter-wave access network systems with space division multiple access using an interleaved subarray hybrid beamforming structure, where antenna elements in each subarray scatter uniformly over the whole antenna array. The st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c9c00165eb44fbc166eb711723b31f4
https://doi.org/10.1109/pimrc.2016.7794677
https://doi.org/10.1109/pimrc.2016.7794677
Autor:
Shunsuke Fujio, Shohei Ishikawa, Toshihiro Shimura, Masahiko Shimizu, Kazuyuki Ozaki, Atsushi Honda, Hiroshi Ashida, Takenori Ohshima, Li Zhengyi, Chikara Kojima, Kenichi Nishikawa, Makoto Yoshida, Yoji Ohashi
Publikováno v:
PIMRC
A millimeter-wave beam multiplexing method using a hybrid beamforming is proposed. We theoretically show that inter-subarray coding at the subarray type interleaved configuration can reduce interference and multiple beams of the same high gain as the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e04e70c6d99472c4825074029a3b3542
https://doi.org/10.1109/pimrc.2016.7794691
https://doi.org/10.1109/pimrc.2016.7794691