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    31.
    发明专利
    未知

    公开(公告)号：BRPI0710020A2

    公开(公告)日：2011-08-02

    申请号：BRPI0710020

    申请日：2007-04-03

    Applicant: ERICSSON TELEFON AB L M

    Inventor： WANG XIAOHUI ,  JONSSON ELIAS

    IPC: H04B7/005

    Abstract: A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure (51) is repetitively estimated and control commands generated from the quality measure (51) and a quality measure reference value (56), which in an outer power control loop is adjusted in dependence on a performance level (52) calculated for signals received during a time interval. A first value (54) is adjusted in dependence on a performance level (52) for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value (55) is adjusted in dependence on a performance level (52) for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals.

    32.
    发明专利
    未知

    公开(公告)号：AT491320T

    公开(公告)日：2010-12-15

    申请号：AT06388027

    申请日：2006-04-12

    Applicant: ERICSSON TELEFON AB L M

    Inventor： WANG XIAOHUI ,  JONSSON ELIAS

    IPC: H04W52/04

    Abstract: A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure (51) is repetitively estimated and control commands generated from the quality measure (51) and a quality measure reference value (56), which in an outer power control loop is adjusted in dependence on a performance level (52) calculated for signals received during a time interval. A first value (54) is adjusted in dependence on a performance level (52) for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value (55) is adjusted in dependence on a performance level (52) for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals.

    RECEIVER AND METHOD FOR PROCESSING RADIO SIGNALS USING SOFT PILOT SYMBOLS
    33.
    发明专利
    RECEIVER AND METHOD FOR PROCESSING RADIO SIGNALS USING SOFT PILOT SYMBOLS 未知

    公开(公告)号：CA2728052A1

    公开(公告)日：2010-01-14

    申请号：CA2728052

    申请日：2009-06-15

    Applicant: ERICSSON TELEFON AB L M

    Inventor： CAIRNS DOUGLAS A ,  JONSSON ELIAS

    IPC: H04L25/02 ,  H04B1/707 ,  H04L1/00 ,  H04L25/03 ,  H04L25/06 ,  H04L27/00 ,  H04L27/227 ,  H04L27/34 ,  H04L27/38

    Abstract: A receiver and method for receiving and processing a sequence of transmitted symbols in a digital communication system utilizing soft pilot symbols. A set of soft pilot symbols are transmitted with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16QAM or 64QAM. The receiver knows the modulation type and location (time/frequency/code) of the soft pilot symbols, and demodulates them first. The receiver uses the demodulated soft pilot symbols as known symbols to estimate parameters of the received radio signal. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols.

    35.
    发明专利
    未知

    公开(公告)号：AT437481T

    公开(公告)日：2009-08-15

    申请号：AT05388069

    申请日：2005-09-01

    Applicant: ERICSSON TELEFON AB L M

    Inventor： JONSSON ELIAS ,  MYREHED MARTEN

    IPC: H04B1/707

    Abstract: Multipath components of transmitted data symbols are received with individual delays and processed by a RAKE having a number of fingers. A delay profile (31) indicating magnitudes for a first number of delay values is provided. Estimated magnitudes for a second number of delay values located between the first number of delay values are calculated by interpolation, and a combined delay profile (32) is provided by combining the magnitudes for the first and second number of delay values. Delay values for peaks in the combined delay profile are determined, and a number of peak delay values (P 1 , P 2 , P) comprising the largest peak are selected from the combined delay profile. At least some of the selected peak delay values are provided to the RAKE and assigned to the fingers. This allows a reduction of current consumption and dye area, while still providing delay values with sufficient resolution for the RAKE.

    A method for interference estimation for orthogonal pilot patterns
    36.
    发明专利
    A method for interference estimation for orthogonal pilot patterns 未知

    公开(公告)号：AU2008256488A1

    公开(公告)日：2008-12-04

    申请号：AU2008256488

    申请日：2008-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： JONSSON ELIAS

    IPC: H04L5/02 ,  H04L27/26

    Abstract: In an OFDM communications system receiver, channel estimates are processed to remove or reduce noise, exploiting the orthogonality of pilot patterns. The de-noised channel estimates are then used to compute inter-cell interference. The noise effects of orthogonal pilot patterns are selectively removed from channel samples in estimating inter-cell interference, depending on whether data subcarriers are subject to the same interference as pilot subcarriers, and whether data subcarriers are subject to interference from sectors with pilot patterns orthogonal to those in the transmitting sector. A further calculation removes noise from cells not identified by an orthogonal pilot sequence, which may be particularly applicable when large variations exist in the frequency domain of the propagation channel across a pilot pattern.

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