Title:
Pre coding and the pre decoding method based on interference alignment, a transmitter, and a moving terminal
Document Type and Number:
Japanese Patent JP6018848
Kind Code:
B2
Abstract:
The embodiment of the invention discloses a pre-coding method, a pre-decoding method, a transmitter and a mobile terminal based on interference alignment. The method comprises steps of: computing an antenna mapping matrix according to a downlink channel state information, wherein the antenna mapping matrix is used for antenna mapping for the current transmitter so as to perform an interference alignment algorithm; computing a multi-cell pre-coding matrix according to the downlink channel state information and the antenna mapping matrix; computing a single cell multi-user pre-coding matrix; and pre-coding user data using the single cell multi-user pre-coding matrix and the multi-cell pre-decoding matrix and performing an antenna mapping using the antenna mapping matrix. According to the embodiment of the invention, a system which cannot use the interference alignment method directly may be transformed into a system which can use the interference alignment method directly. In addition, the interference suppression between cells and the interference management inside cells are two separate processes, in which different linear pre-coding and decoding methods may be used.
Inventors:
Nasoning
Akatsukirin
Atsushi Harada
Akatsukirin
Atsushi Harada
Application Number:
JP2012197739A
Publication Date:
November 02, 2016
Filing Date:
September 07, 2012
Export Citation:
Assignee:
Ntt docomo, Inc.
International Classes:
H04W28/16; H04B7/04; H04J99/00; H04W16/28
Domestic Patent References:
| JP2014502456A |
Foreign References:
| WO2011083875A1 |
Other References:
山田 美季 他,複数基地局連携型MIMOにおけるInterference Alignmentの送受信ウェイトに関する一検討,電子情報通信学会技術研究報告,2010年 2月24日,Vol.109, No.440,pp.191-196,RCS2009-291
Wonjae Shin et al.,On the Design of Interference Alignment Scheme for Two-Cell MIMO Interfereing Broadcast Channels,IEEE Transactions on Wireless Communications,2011年 2月,Vol.10,No.2,pp.437-442
Changho Suh et al.,Downlink Interference Alignment,Global Telecommunications Conference(GLOBECOM 2010), 2010 IEEE,2010年12月10日
Chongning Na et al.,Two-Cell Coordinated Transmission Scheme Based on Interference Alignment and MU-MIMO Beamforming,Vehicular Technology Conference(VTC Spring), 2012 IEEE 75th,2012年 5月 9日
Wonjae Shin et al.,On the Design of Interference Alignment Scheme for Two-Cell MIMO Interfereing Broadcast Channels,IEEE Transactions on Wireless Communications,2011年 2月,Vol.10,No.2,pp.437-442
Changho Suh et al.,Downlink Interference Alignment,Global Telecommunications Conference(GLOBECOM 2010), 2010 IEEE,2010年12月10日
Chongning Na et al.,Two-Cell Coordinated Transmission Scheme Based on Interference Alignment and MU-MIMO Beamforming,Vehicular Technology Conference(VTC Spring), 2012 IEEE 75th,2012年 5月 9日
Attorney, Agent or Firm:
Hiroyoshi Aoki
Amada Masayuki
Yoshimasa Okada
Tsutomu Mizoguchi
Amada Masayuki
Yoshimasa Okada
Tsutomu Mizoguchi
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