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    MULTI-STAGE RECEIVER FOR WIRELESS COMMUNICATION
    2.
    发明公开
    MULTI-STAGE RECEIVER FOR WIRELESS COMMUNICATION 审中-公开
    多级接收器，无线通信

    公开(公告)号：EP1955444A2

    公开(公告)日：2008-08-13

    申请号：EP06850216.0

    申请日：2006-11-30

    申请人： QUALCOMM Incorporated

    发明人： JOETTEN, Christoph Arnold ,  JONGREN, George ,  FERNANDEZ-CORBATON, Ivan Jesus

    IPC分类号： H04B1/707 ,  H04L25/03

    CPC分类号： H04L25/03019 ,  H04B1/71057 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70701 ,  H04L5/023 ,  H04L25/0226 ,  H04L27/2647 ,  H04L2025/03426

    摘要： Techniques for receiving a MIMO transmission are described. A receiver processes received data from multiple receive antennas in multiple stages. A first stage performs front-end filtering/equalization on the received data with a front-end filter to process non on-time signal components in the multiple received signals. A second stage processes the filtered data with one or more combiner matrices to combine on-time signal components for multiple transmitted signals. For a MIMO-CDM transmission, a single front-end filter may be used for all channelization codes, and a different combiner matrix may be used for each channelization code. Partitioning the receiver processing into multiple stages simplifies derivation of the front-end filter and combiner matrices while achieving good performance. The front-end filter and combiner matrices may be updated separately at the same or different rates.

    SIGNALLING OF POWER INFORMATION FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM
    4.
    发明授权
    SIGNALLING OF POWER INFORMATION FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 有权

    公开(公告)号：EP2102997B1

    公开(公告)日：2019-10-02

    申请号：EP08727548.3

    申请日：2008-01-10

    申请人： Qualcomm Incorporated

    发明人： BLANZ, Josef, J. ,  FERNANDEZ-CORBATON, Ivan Jesus

    IPC分类号： H04W52/34 ,  H04B7/04 ,  H04J13/00 ,  H04B1/707

    摘要： Techniques for signaling power information to facilitate channel quality indicator (CQI) reporting are described. A Node B may send power information that may be used by a UE to determine a power per channelization code, POVSF. In one design, the power information includes a power offset between the power of a data channel, PHSPDSCH, and the power of a pilot channel. The Node B may determine PHSPDSCH based on the power available for the data channel, the number of available channelization codes, and a designated number of channelization codes. The UE may determine POVSF based on the power information from the Node B and the designated number of channelization codes. The UE may estimate at least one SINR of at least one transport block based on POVSF, determine CQI information for the transport block(s) based on the SINR, and send the CQI information to the Node B.

    METHOD AND APPARATUS FOR VARYING THE LENGTH OF AN ADAPTIVE EQUALIZER BASED ON DOPPLER FREQUENCY
    5.
    发明授权
    METHOD AND APPARATUS FOR VARYING THE LENGTH OF AN ADAPTIVE EQUALIZER BASED ON DOPPLER FREQUENCY 有权
    METHOD AND APPARATUS FOR改变长度的自适应均衡器基于多普勒频率

    公开(公告)号：EP1436908B1

    公开(公告)日：2009-09-02

    申请号：EP02768894.4

    申请日：2002-09-24

    申请人： Qualcomm, Incorporated

    发明人： SMEE, John E ,  FERNANDEZ-CORBATON, Ivan Jesus ,  JAYARAMAN, Srikant

    IPC分类号： H04B7/00 ,  H04L25/03

    CPC分类号： H04L25/03038 ,  H04L2025/03375 ,  H04L2025/03585

    摘要： Systems and methods according to the present invention are described for adjusting the number of taps in an adaptive equalizer over time as the rate of change of a communications channel varies. The number of taps or "equalizer length" is adjusted based on an estimate of the Doppler frequency between the devices communicating over a channel. The Doppler frequency is reflective of the rate of change of the communications channel. Greater Doppler frequencies indicate a more quickly varying channel, and vice versa. It is therefore desirable to change the equalizer length (by adding or dropping taps) based on a measurement of the Doppler frequency. Equalizer length is increased as the Doppler frequency decreases. Conversely, equalizer length is decreased as the Doppler frequency increases. This enables the equalizer to achieve a better compromise between the competing goals of adaptation speed (less taps) and ISI reduction (more taps).

    FEEDBACK OF PRECODING CONTROL INDICATION (PCI) AND CHANNEL QUALITY INDICATION (CQI) IN A WIRELESS COMMUNICATION SYSTEM
    6.
    发明公开
    FEEDBACK OF PRECODING CONTROL INDICATION (PCI) AND CHANNEL QUALITY INDICATION (CQI) IN A WIRELESS COMMUNICATION SYSTEM 有权
    信道质量和VORKODIERUNGSSTEUERUNGSANZEIGE显示在无线通信系统的反馈

    公开(公告)号：EP2052468A2

    公开(公告)日：2009-04-29

    申请号：EP07814155.3

    申请日：2007-08-16

    申请人： QUALCOMM Incorporated

    发明人： BLANZ, Josef J. ,  FERNANDEZ-CORBATON, Ivan Jesus

    IPC分类号： H04B7/06

    CPC分类号： H04B7/0639 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0632

    摘要： Techniques for sending feedback information in a wireless communication system are described. In one design, precoding control indication (PCI), rank, and channel quality indication (CQI) for data transmission from a transmitter to a receiver may be determined by evaluating different hypotheses. A report may be formed based on the PCI, rank and CQI. The PCI may include a precoding matrix or vector to use for the data transmission. The CQI may include at least one CQI value for at least one transport block to send for the data transmission. The rank and CQI may be combined based on a mapping. For example, the CQI may include one CQI value and fall within a first range of values if one transport block is preferred by the receiver. The CQI may include two CQI values and fall within a second range of values if two transport blocks are preferred.

    SIGNALLING OF POWER INFORMATION FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM
    7.
    发明公开
    SIGNALLING OF POWER INFORMATION FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 有权
    电力信息来进行MIMO传输在无线通信系统中的信令

    公开(公告)号：EP2102997A2

    公开(公告)日：2009-09-23

    申请号：EP08727548.3

    申请日：2008-01-10

    申请人： Qualcomm Incorporated

    发明人： BLANZ, Josef, J. ,  FERNANDEZ-CORBATON, Ivan Jesus

    IPC分类号： H04B7/005

    摘要： Techniques for signaling power information to facilitate channel quality indicator (CQI) reporting are described. A Node B may send power information that may be used by a UE to determine a power per channelization code, POVSF. In one design, the power information includes a power offset between the power of a data channel, PHSPDSCH, and the power of a pilot channel. The Node B may determine PHSPDSCH based on the power available for the data channel, the number of available channelization codes, and a designated number of channelization codes. The UE may determine POVSF based on the power information from the Node B and the designated number of channelization codes. The UE may estimate at least one SINR of at least one transport block based on POVSF, determine CQI information for the transport block(s) based on the SINR, and send the CQI information to the Node B.

    摘要翻译： 用于信令功率信息以促进信道质量指示符（CQI）报告的技术。 节点B可以发送功率信息也可以由UE用于确定矿每信道化码，POVSF功率。 在一种设计中，电力信息包括功率的数据信道，PHSPDSCH的功率之间的偏移，和导频信道的功率。 节点B可以基于可用于所述数据信道，可用的信道化码的数量，和信道化码的指定数目的功率确定性矿PHSPDSCH。 UE可以基于从节点B的功率信息和信道化码的指定数目确定性矿POVSF。 UE可以基于POVSF，用于基于所述SINR的传输块（多个）确定性矿CQI信息估计至少一个传输块中的至少一个SINR，并发送CQI信息到节点B.

    MAP DECODER WITH BIDIRECTIONAL SLIDING WINDOW ARCHITECTURE
    8.
    发明公开
    MAP DECODER WITH BIDIRECTIONAL SLIDING WINDOW ARCHITECTURE 审中-公开
    双向GLEITFENSTERARCHITEKTUR映射解码器

    公开(公告)号：EP1977525A1

    公开(公告)日：2008-10-08

    申请号：EP07762476.5

    申请日：2007-01-29

    申请人： QUALCOMM Incorporated

    发明人： CHEN, Pei ,  FERNANDEZ-CORBATON, Ivan Jesus ,  DE LOS PINOS PONT, Jordi

    IPC分类号： H03M13/45

    CPC分类号： H03M13/3905 ,  H03M13/3723 ,  H03M13/3972 ,  H03M13/6561

    摘要： A MAP decoder, or a turbo decoder having constituted MAP decoders, is configured with bi-directional sliding windows. A sliding window architecture is applied to the forward state metric (FSM) calculation of an encoded data block having a trellis with N time-steps. The data block is divided into smaller sub-blocks and a forward recursion of two or more of the sub-blocks are performed in parallel to obtain FSMs. Each sub-block overlaps with a previous sub-block by k time-steps, where k is an integer value greater than zero. This provides a good approximation of the FSMs at time-step k + t of the sub-block. The FSMs associated with the first k time steps of each sub-block, other than the first sub-block, are discarded. A reverse recursion of each sub-block is also performed to obtain reverse state metrics (RSM) for the sub-block. Likelihood ratios are then calculated based on the FSMs and RSMs.