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    METHOD AND APPARATUS FOR ENHANCING CHANNEL ESTIMATION
    1.
    发明授权
    METHOD AND APPARATUS FOR ENHANCING CHANNEL ESTIMATION 有权

    公开(公告)号：EP2537310B1

    公开(公告)日：2018-05-30

    申请号：EP10845980.1

    申请日：2010-02-17

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： GUO, Zhiheng ,  WANG, Hai ,  ZHANG, Ruiqi

    IPC分类号： H04L27/26 ,  H04L25/02

    CPC分类号： H04L25/024 ,  H04L25/0218 ,  H04L25/022 ,  H04L27/2647

    摘要： A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.

    ITERATIVE MISO CHANNEL ESTIMATION USING A SCALABLE ESTIMATION RING
    3.
    发明公开
    ITERATIVE MISO CHANNEL ESTIMATION USING A SCALABLE ESTIMATION RING 审中-公开
    ITERATIVEMISOKANALSCHÄTZUNGANHAND EINES SKALIERBARENSCHÄTZRINGS

    公开(公告)号：EP3111604A1

    公开(公告)日：2017-01-04

    申请号：EP15709363.4

    申请日：2015-02-16

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： DA SILVEIRA, Marthinus Willem ,  MCGOWAN, Neil ,  BEN GHALBA, Slim

    IPC分类号： H04L25/02 ,  H04B17/12

    CPC分类号： H04L25/0212 ,  H04B17/12 ,  H04B17/14 ,  H04B17/373 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/024 ,  H04W88/08

    摘要： Systems and methods are disclosed for estimating impulse responses of multiple channels, e.g., multiple antenna sub-array paths of a base station, in a distributed manner. In one embodiment, a method of operation of a Scalable Estimation Ring (SER) processing component in a SER that operates to estimate impulse responses of corresponding channels is provided. In one embodiment, the method includes, during a first iteration of the SER, receiving a feedback signal for the SER processing component and computing an initial estimate of an impulse response of a corresponding channel based on the feedback signal, removing a contribution of the corresponding channel from the feedback signal based on the initial estimate of the impulse response of the corresponding channel to thereby provide a feedback signal for a next SER processing component in the SER, and outputting the feedback signal for the next SER processing component in the SER.

    摘要翻译： 公开了用于以分布式方式估计多个信道（例如，基站的多个天线子阵列路径）的脉冲响应的系统和方法。 在一个实施例中，提供了一种操作SER中的可伸缩估计环（SER）处理组件的操作方法，该组件用于估计相应通道的脉冲响应。 在一个实施例中，该方法包括在SER的第一次迭代期间，接收针对SER处理组件的反馈信号，并基于该反馈信号计算对应信道的脉冲响应的初始估计， 基于对应信道的脉冲响应的初始估计，从反馈信号中提供反馈信号，从而为SER中的下一个SER处理组件提供反馈信号，并输出SER中的下一个SER处理组件的反馈信号。

    COMMUNICATIONS SYSTEM FOR CONFIGURING CHANNEL STATE INFORMATION
    7.
    发明公开
    COMMUNICATIONS SYSTEM FOR CONFIGURING CHANNEL STATE INFORMATION 审中-公开
    配置信道状态信息的通信系统

    公开(公告)号：EP2893753A1

    公开(公告)日：2015-07-15

    申请号：EP13842816.4

    申请日：2013-09-27

    申请人： Huawei Technologies Co., Ltd.

    发明人： BI, Hao ,  WANG, Ke ,  LI, Zhongfeng ,  LU, Jianmin ,  MAZZARESE, David Jean-Marie

    IPC分类号： H04W52/04 ,  H04W72/04 ,  H04W72/08

    CPC分类号： H04W72/082 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L25/024

    摘要： A method for communicating in a wireless communications system includes generating a channel state information (CSI) process information element (IE) including a CSI process identifier, a non-zero padded CSI-reference signal (CSI-RS) identifier, an interference measurement resource (IMR) identifier, and channel quality indicator (CQI) report configuration information (block 407). The method also includes transmitting the CSI process IE (block 410).

    摘要翻译： 一种用于在无线通信系统中进行通信的方法包括：生成包括CSI过程标识符，非零填充的CSI参考信号（CSI-RS）标识符，干扰测量资源（CSI-RS）的信道状态信息 （IMR）标识符和信道质量指示符（CQI）报告配置信息（方框407）。 该方法还包括发送CSI过程IE（框410）。

    Method and apparatus for determining channel state information
    8.
    发明公开
    Method and apparatus for determining channel state information 审中-公开
    Verfahren und Vorrichtung zur Bestimmung von Kanalstatusinformationen

    公开(公告)号：EP2547022A1

    公开(公告)日：2013-01-16

    申请号：EP11173714.4

    申请日：2011-07-13

    申请人： Intel Mobile Communications Technology Dresden GmbH

    发明人： Pean, Johan ,  Bury, Andreas

    IPC分类号： H04L1/00 ,  H04L1/20 ,  H04L25/02 ,  H04L27/26 ,  H04B1/10 ,  H04B7/04

    CPC分类号： H04L25/024 ,  H04B7/0417 ,  H04L1/0001 ,  H04L1/20 ,  H04L25/03006 ,  H04L27/2601 ,  H04L27/2647

    摘要： A mobile station receiving a signal from a base station experiences time/frequency varying channel conditions. In order to get the maximum throughput from a base-station, it is necessary to adjust the modulation and coding schemes to the actual channel quality. To do so, mobile receivers are required to probe the radio channel condition and feedback a limited set of estimated channel state information parameters such as CQI, RI, and PMI. The invention uses modulation-specific mutual information as a basic metric for CQI-PMI-RI computation to yield high bandwidth efficiency under both flat fading and interference conditions as well as time and frequency selective fading and interference conditions, at reasonable complexity.

    摘要翻译： 从基站接收信号的移动台经历时间/频率变化的信道条件。 为了从基站获得最大吞吐量，有必要将调制和编码方案调整到实际的信道质量。 为此，需要移动接收机来探测无线电信道条件并且反馈一组有限的估计信道状态信息参数，例如CQI，RI和PMI。 本发明使用调制专用互信息作为CQI-PMI-RI计算的基本度量，以在平坦衰落和干扰条件以及时间和频率选择性衰落和干扰条件下在合理的复杂度下产生高带宽效率。