Title:
RECEPTION DEVICE, COMMUNICATION SYSTEM, AND METHOD FOR CALCULATING LIKELIHOOD OF MODULATION SIGNAL
Document Type and Number:
WIPO Patent Application WO/2019/167125
Kind Code:
A1
Abstract:
This reception device is provided with: a signal division unit (210) that divides, into real number components and imaginary number components, reception signals including a plurality of multiplexed signals obtained by multiplexing of a plurality of modulated modulation signals with a real number precoding matrix; a maximum likelihood point search unit (220) that performs narrowing down of signal candidate points to be taken by the real number components of the multiplexed signals to a first signal point candidate by using one of the real number components of the reception signals; a maximum likelihood point search unit (221) that performs narrowing down of signal candidate points to be taken by the imaginary number components of the multiplexed signals to a second signal point candidate by using one of the imaginary number components of the reception signals; a replica vector calculation unit (230) that calculates a first replica vector by using the first signal point candidate; a replica vector calculation unit (231) that calculates a second replica vector by using the second signal point candidate; and a likelihood calculation unit (240) that calculates the likelihoods of the modulation signals by using the first replica vector and the second replica vector.
Inventors:
YAMAGUCHI KANAKO (JP)
NISHIMOTO HIROSHI (JP)
TOMITSUKA KOJI (JP)
NISHIMOTO HIROSHI (JP)
TOMITSUKA KOJI (JP)
Application Number:
PCT/JP2018/007266
Publication Date:
September 06, 2019
Filing Date:
February 27, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B7/0413
Domestic Patent References:
| WO2018025400A1 | 2018-02-08 |
Other References:
YAMAGUCHI, KANAKO; GRESSET, NICOLAS; NISHIMOTO, HIROSHI; UMEDA, SHUSAKU; TSUKAMOTO, KAORU; OKAZAKI, AKIHIRO; OKAMURA, ATSUSHI: "Serial Concatenation Approach of Spectral precoding and DSTBC Encoding 2-dimensional Diversity", IEICE TECHNICAL REPORT. RCS, vol. 115, no. 113, 17 June 2015 (2015-06-17), pages 19 - 24, XP009522133
YAMAGUCHI, KANAKO; NISHIMOTO, HIROSHI; UMEDA, SHUSAKU; TSUKAMOTO, KAORU; OKAZAKI, AKIHIRO; SANO, HIROYASU; OKAMURA, ATSUSHI: "B-5-20 Reduction in symbol replica candidates for MLD Decoding over spectrally-precoded diversity transmission", PROCEEDINGS OF THE 2016 IEICE SOCIETY CONFERENCE, 6 December 2016 (2016-12-06), Sapporo Japan , pages 290, XP009522135
See also references of EP 3742624A4
YAMAGUCHI, KANAKO; NISHIMOTO, HIROSHI; UMEDA, SHUSAKU; TSUKAMOTO, KAORU; OKAZAKI, AKIHIRO; SANO, HIROYASU; OKAMURA, ATSUSHI: "B-5-20 Reduction in symbol replica candidates for MLD Decoding over spectrally-precoded diversity transmission", PROCEEDINGS OF THE 2016 IEICE SOCIETY CONFERENCE, 6 December 2016 (2016-12-06), Sapporo Japan , pages 290, XP009522135
See also references of EP 3742624A4
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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