US 12,009,862 B2
Wireless transmitting system, wireless receiving system, base station apparatus, wireless communication system, wireless transmitting method, and wireless receiving method
Kota Ito, Musashino (JP); Mizuki Suga, Musashino (JP); Yushi Shirato, Musashino (JP); and Naoki Kita, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/775,745
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Nov. 25, 2019, PCT No. PCT/JP2019/046001
§ 371(c)(1), (2) Date May 10, 2022,
PCT Pub. No. WO2021/106043, PCT Pub. Date Jun. 3, 2021.
Prior Publication US 2022/0393764 A1, Dec. 8, 2022
Int. Cl. H04B 10/2575 (2013.01)
CPC H04B 10/25753 (2013.01) 4 Claims
OG exemplary drawing
 
1. A wireless reception system, comprising:
a base station reception unit; and
an accommodation station reception unit, wherein
the base station reception unit includes:
a reception beam formation unit including a reflect array or a transmit array, the reflect array or the transmit array being configured to receive a plurality of RF signals and converge the plurality of RF signals at a plurality of convergence positions that differ depending on arriving directions of the plurality of RF signals to form a plurality of reception beams;
a plurality of reception antennas disposed at each of the plurality of convergence positions and configured to receive the plurality of RF signals that have converged at the plurality of convergence positions;
a plurality of optical modulators connected to the plurality of reception antennas, the plurality of optical modulators being configured to obtain light of different wavelengths and modulate the obtained light to generate a plurality of optical signals based on the plurality of RF signals received by the plurality of connected reception antennas, and
an optical multiplexer configured to multiplex the plurality of optical signals of different wavelengths generated by the plurality of optical modulators and output the plurality of multiplexed optical signals; and
the accommodation station reception unit is configured to obtain the plurality of optical signals output by the base station reception unit, and includes:
an optical demultiplexer configured to obtain the plurality of optical signals output by the optical multiplexer of the base station reception unit and demultiplex the plurality of optical signals for each wavelength, and
an output unit configured to convert the plurality of optical signals demultiplexed by the optical demultiplexer into a plurality of electrical signals to demodulate the plurality of RF signals and output the plurality of demodulated RF signals.