Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Nana Narukawa"'
Publikováno v:
2019 IEEE Asia-Pacific Microwave Conference (APMC).
This paper presents the beam scanning three-dimensional monopulse antenna for flying cars collision avoidance. In our previous study, the radiation patterns for a monopulse antenna was designed on the basis of a two-dimensional manner, i.e. on the ho
Publikováno v:
2019 IEEE Asia-Pacific Microwave Conference (APMC).
There are some difficulties in a Monte-Carlo simulation when it is used for simulating a large-scale MIMO antenna. In a conventional Monte-Carlo simulation, the scatterers are arranged at regular intervals on a circle. The number of scatterers requir
Autor:
Koichi Ogawa, Nana Narukawa
Publikováno v:
2019 IEEE Asia-Pacific Microwave Conference (APMC).
This paper presents the phase reversal weighting (PRW) method that provides an angle of arrival (AOA) estimation antenna operating over the full-solid angle three-dimensional space for use in flying car-to-car communications. So far, we have develope
Autor:
Koichi Ogawa, Nana Narukawa
Publikováno v:
2019 IEEE Conference on Antenna Measurements & Applications (CAMA).
We are currently developing a 32 × 32 MIMO beam steering array, aiming at establishing an over-10 Gbps transmission rate. Angle of arrival (AOA) function is embedded into the array, enabling the radiation beam of the MIMO antenna to be directed prec
Publikováno v:
2019 IEEE Conference on Antenna Measurements & Applications (CAMA).
In this paper, a sandwiched-monopole MIMO array is proposed for illuminating upper and lower hemispheres in space for use in flying car-to-car communications. By adjusting the size of a ground plane of the array, the radiation pattern in high elevati
Publikováno v:
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring).
We are currently developing a new concept of large-scale MIMO systems, called “Daisy Chain MIMO Antenna,” that utilizes circular beam scanning array technology. Great emphasis is placed on a way of achieving a large-scale MIMO antenna at a mobile
Publikováno v:
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring).
This paper presents a new concept of large-scale MIMO systems called “Daisy Chain MIMO Antenna”. We have conducted a series of studies to confirm the validity of our proposal, which include 32 x 32 and 64 x 64 MIMO systems. Though in-depth examin
Publikováno v:
2019 URSI International Symposium on Electromagnetic Theory (EMTS).
This paper presents a multiple-input multiple-output (MIMO) antenna system that has the ability to perform beam scanning operation over the whole azimuth, with the aim of realizing vehicular communications at several tens of gigabits capacity. The de
Publikováno v:
2019 URSI International Symposium on Electromagnetic Theory (EMTS).
In this paper, we advance the concept of a daisy chain array structure to create a 64 × 64 multiple-input multiple-output (MIMO) array that can maintain a 50 Gbps transmission rate in the whole azimuth without appreciable degradation. 64 independent
Publikováno v:
2019 URSI International Symposium on Electromagnetic Theory (EMTS).
In this paper, we conduct investigations on the angular accuracy of a circularly arranged phase monopulse Angle of Arrival (AOA) estimation antenna in Rician multipath propagation environments. A novel algorithm, called the mean IQ-value method (MIQ