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    3.
    发明专利
    未知

    公开(公告)号：DE69626540D1

    公开(公告)日：2003-04-10

    申请号：DE69626540

    申请日：1996-11-22

    Applicant: ERICSSON TELEFON AB L M

    Inventor： FORSS N ULF ,  ANDERSSON SOEREN ,  JOHANNISSON BJOERN

    IPC: H01Q3/40 ,  H01Q25/00 ,  H01Q25/04 ,  H04B7/10

    Abstract: An antenna assembly, and an associated method, which exhibits a selected the antenna beam configuration. The direction of a primary lobe and of a null is selected to improve the signal-to-noise and signal-to-interference ratios of communication signals transmitted between two communication stations. When implemented to form a portion of a base station of a cellular communication system, the traffic capacity of the communication system can be increased and the infrastructure costs of the system can be reduced.

    4.
    发明专利
    未知

    公开(公告)号：SE513656C2

    公开(公告)日：2000-10-16

    申请号：SE9704282

    申请日：1997-11-21

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MAZUR SARA ,  HAGERMAN BO ,  FORSSEN ULF ,  ANDERSSON SOEREN ,  OVESJOE FREDRIK

    IPC: H01Q3/26 ,  H04B7/08 ,  H01Q3/24 ,  H04B7/10 ,  H04B7/26 ,  H04B7/02

    Abstract: The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.

    6.
    发明专利
    未知

    公开(公告)号：SE9803317D0

    公开(公告)日：1998-09-30

    申请号：SE9803317

    申请日：1998-09-30

    Applicant: ERICSSON TELEFON AB L M

    Inventor： PETERSSON SVEN OSCAR ,  JOHANNISSON BJOERN ,  ANDERSSON SOEREN

    IPC: H01Q3/26 ,  H01Q21/29 ,  H01Q21/24 ,  H01Q

    Abstract: To improve null depths in an antenna pattern of a first polarization, formed with nulls in at least one angular region, a further antenna pattern of a second polarization, substantially orthogonal to the first polarization, is concurrently formed. In the angular region, the amplitudes of the copolar components of the further antenna pattern are substantially equal to the amplitudes of the crosspolar components of the antenna pattern of the first polarization, and the phases of the copolar components of the further antenna pattern of the second polarization are substantially opposite to the phases of the crosspolar component of the first polarization.

    7.
    发明专利
    未知

    公开(公告)号：SE9704282D0

    公开(公告)日：1997-11-21

    申请号：SE9704282

    申请日：1997-11-21

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MAZUR SARA ,  HAGERMAN BO ,  FORSSEN ULF ,  ANDERSSON SOEREN ,  OVESJOE FREDRIK

    IPC: H01Q3/26 ,  H01Q3/24 ,  H04B7/08 ,  H04B7/10 ,  H04B7/26 ,  H04B

    Abstract: The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.

    8.
    发明专利
    未知

    公开(公告)号：DE69835349T2

    公开(公告)日：2007-08-23

    申请号：DE69835349

    申请日：1998-03-20

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ANDERSSON SOEREN ,  PELIN PER

    IPC: H04B7/005 ,  H04B1/707 ,  H04B1/7073 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/04 ,  H04L25/02 ,  H04L25/03

    Abstract: Methods and systems for processing received radio signals are described wherein the finite alphabet quality of digital transmissions is utilized to improve performance. Nonsynchronous sampling of received signals introduces intersymbol interference which is compensated for by these methods and systems. Different types of signal modulation, and their impact on this type of intersymbol interference are discussed. A robust diversity combining technique, usable in conjunction with antenna arrays is developed.

    9.
    发明专利
    未知

    公开(公告)号：DE69835349D1

    公开(公告)日：2006-09-07

    申请号：DE69835349

    申请日：1998-03-20

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ANDERSSON SOEREN ,  PELIN PER

    IPC: H04B7/005 ,  H04B1/707 ,  H04B1/7073 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/04 ,  H04L25/02 ,  H04L25/03

    Abstract: Methods and systems for processing received radio signals are described wherein the finite alphabet quality of digital transmissions is utilized to improve performance. Nonsynchronous sampling of received signals introduces intersymbol interference which is compensated for by these methods and systems. Different types of signal modulation, and their impact on this type of intersymbol interference are discussed. A robust diversity combining technique, usable in conjunction with antenna arrays is developed.

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