Title:
WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, PRECODER DETERMINATION METHOD AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2017/002323
Kind Code:
A1
Abstract:
In order to enable, in an MU-MIMO system, the determination of a precoder that can achieve a high throughput with a small amount of calculations the present invention: determines at least one precoder for each of a plurality of terminals; calculates, on the basis of the first precoder, a first indicator which takes into consideration the interference-imparting power; sorts the plurality of terminals on the basis of the first indicator; sequentially selects transmission precoder determination vectors from a predefined set, on the basis of a second indicator which takes into consideration the interference between terminals at a terminal; and determines a second precoder to be used in transmission on the basis of the transmission precoder determination vectors.
Inventors:
TAJIMA SHINICHI (JP)
PITAKDUMRONGKIJA BOONSARN (JP)
MATSUNAGA YASUHIKO (JP)
KAKURA YOSHIKAZU (JP)
ISHII NAOTO (JP)
PITAKDUMRONGKIJA BOONSARN (JP)
MATSUNAGA YASUHIKO (JP)
KAKURA YOSHIKAZU (JP)
ISHII NAOTO (JP)
Application Number:
PCT/JP2016/002965
Publication Date:
January 05, 2017
Filing Date:
June 21, 2016
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J99/00; H04B7/04; H04W16/28
Foreign References:
| JP2012134958A | 2012-07-12 | |||
| US20140185700A1 | 2014-07-03 |
Other References:
NIKHIL GUPTA ET AL.: "Multiuser Successive Maximum Ratio Transmission(MS-MRT) for Video Quality Maximization in Unicast and Broadcast MIMO OFDMA-Based 4G Wireless Networks", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. 63, no. 7, September 2014 (2014-09-01), pages 3147 - 3156, XP011558763
THANH V. PHAM ET AL.: "Sum-Rate Maximization of Multi-User MIMO Visible Light Communications", 2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION WORKSHOP(ICCW), 12 June 2015 (2015-06-12), pages 1344 - 1349, XP055342995
THANH V. PHAM ET AL.: "Sum-Rate Maximization of Multi-User MIMO Visible Light Communications", 2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION WORKSHOP(ICCW), 12 June 2015 (2015-06-12), pages 1344 - 1349, XP055342995
Attorney, Agent or Firm:
SHIMOSAKA, Naoki (JP)
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