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公开(公告)号：EP2210346A2
公开(公告)日：2010-07-28
申请号：EP08836270.2
申请日：2008-10-02
Applicant: Nokia Corporation
Inventor： TENG, Yong , YU, Jiang
IPC: H04B1/10
CPC classification number: H04L27/2647 , H04L5/0007
Abstract: An exemplary embodiment in accordance with this invention is a method for determining the number of interfering streams. The method includes calculating statistical information based on one or more received OFDM signals. The number of interfering streams is estimated from the statistical information in this method. The OFDM signal(s) are received via a plurality of antennas. Storing the OFDM signal(s) in a square matrix may be included in the method. A covariance matrix of the square matrix can be determined; and a noise subspace and a signal plus interference subspace can be determined based on a SVD of the covariance matrix. The statistical information maybe based on the signal plus interference subspace. Apparatus, computer programs and computer-readable media are also discloses.
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公开(公告)号：EP2210346B1
公开(公告)日：2012-04-18
申请号：EP08836270.2
申请日：2008-10-02
Applicant: Nokia Corporation
Inventor： TENG, Yong , YU, Jiang
CPC classification number: H04L27/2647 , H04L5/0007
Abstract: An exemplary embodiment in accordance with this invention is a method for determining the number of interfering streams. The method includes calculating statistical information based on one or more received OFDM signals. The number of interfering streams is estimated from the statistical information in this method. The OFDM signal(s) are received via a plurality of antennas. Storing the OFDM signal(s) in a square matrix may be included in the method. A covariance matrix of the square matrix can be determined; and a noise subspace and a signal plus interference subspace can be determined based on a SVD of the covariance matrix. The statistical information maybe based on the signal plus interference subspace. Apparatus, computer programs and computer-readable media are also discloses.
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公开(公告)号：EP2425565A1
公开(公告)日：2012-03-07
申请号：EP10716836.1
申请日：2010-04-29
Applicant: Nokia Siemens Networks OY , Nokia Corporation
Inventor： TIRKKONEN, Olav , DOTTLING, Martin , YU, Jiang
CPC classification number: H04J3/0638 , H04W56/0015
Abstract: The invention is related to wireless communication systems, methods, devices, computer program, and computer-readable memory medium, and, more specifically, relate to synchronization techniques. The invention relates to a method, comprising: deriving two different timings from a timing source, wherein a first derived timing is a physical timing used for timing at least transmissions from a wireless network access node, and wherein a second derived timing is a virtual timing representing a currently preferred physical timing; receiving an indication of a virtual timing from at least one other network access node; comparing the at least one received virtual timing indication with the derived virtual timing of the network access node, and update the derived virtual timing; and determining achieving synchronization of the derived virtual timing with the at least one received virtual timing, and to adjust the physical timing accordingly.
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公开(公告)号：EP2425565B1
公开(公告)日：2015-09-30
申请号：EP10716836.1
申请日：2010-04-29
Applicant: Nokia Solutions and Networks Oy , Nokia Corporation
Inventor： TIRKKONEN, Olav , DOTTLING, Martin , YU, Jiang
CPC classification number: H04J3/0638 , H04W56/0015
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