INTERFERENCE ALIGNMENT METHOD AND DEVICE IN CELLULAR NETWORK

WIPO Patent Application WO/2012/093904

A3

According to one aspect of the present invention, the present invention provides a method for allowing a base station, which receives signals from one or more terminals, to align receiving signals and interference signals in a wireless access system. Said method comprises the steps of: receiving the receiving signals and the interference signals, wherein said receiving signals are signals which are received from terminals that belong to a serving cell of said base station, and said interference signals are signals which are received from terminals that belong to neighbor cells of said base station; dividing a signal space for receiving said receiving signals and said interference signals into one or more signal spaces of size N; and arranging K receiving signals of said receiving signals in each of said divided signal spaces, wherein said K receiving signals arranged in each of said divided signal spaces are orthogonal to each other.

JPH11212597	METHOD FOR SUPPRESSING NARROW-BAND FIXED FREQUENCY INTERFERENCE OF AUDIO SIGNAL
WO/2001/050645	DATA TRANSCEIVER WITH FILTERING AND PRECODING
WO/2000/017859	NOISE SUPPRESSION FOR LOW BITRATE SPEECH CODER

KIM KIJUN (KR)
KIM BYOUNGHOON (KR)
CHO JOONHO (KR)
YEO JEONGHO (KR)
YOO YOUNGGEON (KR)

PCT/KR2012/000178

September 27, 2012

January 06, 2012

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LG ELECTRONICS INC (KR)
POSTECH ACAD IND FOUND (KR)
KIM KIJUN (KR)
KIM BYOUNGHOON (KR)
CHO JOONHO (KR)
YEO JEONGHO (KR)
YOO YOUNGGEON (KR)

H04B15/00; H04B7/02

R. TRESCH ET AL.: "Cellular Interference Alignment with Imperfect Channel Knowledge", 2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS, 18 June 2009 (2009-06-18), pages 1 - 5, XP031515458
V. R. CADAMBE ET AL.: "Interference Alignment and the Degrees of Freedom of Wireless X networks", IEEE TRANSACTIONS ON INFORMATION THEORY, vol. 55, no. 9, September 2009 (2009-09-01), pages 3893 - 3908, XP011272448, DOI: doi:10.1109/TIT.2009.2025541
C. M. YETIS ET AL.: "On Feasibility of Interference Alignment in MIMO Interference Networks", IEEE TRANSACTIONS ON SIGNAL PROCESSING, vol. 58, no. 9, September 2010 (2010-09-01), pages 4771 - 4782

KIM, Yong In (7th Floor Hyundae Building,175-9 Jamsil-dong,Songpa-ku, Seoul 138-861, KR)

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