HIGH PERFORMANCE WIRELESS RECEIVER WITH CLUSTER MULTIPATH INTERFERENCE SUPPRESSION CIRCUIT
    114.
    发明申请
    HIGH PERFORMANCE WIRELESS RECEIVER WITH CLUSTER MULTIPATH INTERFERENCE SUPPRESSION CIRCUIT 审中-公开
    集群多路干扰抑制电路的高性能无线接收器

    公开(公告)号:WO2005009057A3

    公开(公告)日:2005-07-21

    申请号:PCT/US2004022547

    申请日:2004-07-13

    Abstract: A receiver which suppresses inter-cluster multipath interference by processing an impulse channel response consisting of two multipath clusters, each cluster having groups of signals with multiple delays. In one embodiment, the receiver includes a single antenna and parallel-connected delay units used to align the groups of signals before being input into respective sliding window equalizers. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. In another embodiment, a Cluster Multipath Interference Suppression (CMIS) circuit is incorporated into the receiver. The CMIS circuit includes a hard decision unit and a plurality of signal regeneration units to generate replicas of the multipath clusters. The replicas are subtracted from the respective outputs of the delay units and the results are input to the respective sliding window equalizers. In another embodiment, multiple antennas are used to receive and process the clusters.

    Abstract translation: 一种通过处理由两个多路径簇组成的脉冲信道响应来抑制簇间多路径干扰的接收机,每个簇具有多个延迟的信号组。 在一个实施例中,接收器包括单个天线和并联连接的延迟单元,用于在输入到相应滑动窗口均衡器之前对齐这些信号组。 均衡器的输出通过提供单输出的组合器在芯片级组合。 在另一个实施例中,集群多路径干扰抑制(CMIS)电路被结合到接收机中。 CMIS电路包括硬判决单元和多个信号再生单元以生成多路径群集的复制品。 从延迟单元的各个输出中减去副本,并将结果输入到各个滑动窗口均衡器。 在另一个实施例中,使用多个天线来接收和处理群集。

    COORDINATION OF BEAM FORMING IN WIRELESS COMMUNICATION SYSTEMS
    118.
    发明申请
    COORDINATION OF BEAM FORMING IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    无线通信系统中波束形成协调

    公开(公告)号:WO2004105284A3

    公开(公告)日:2005-05-12

    申请号:PCT/US2004012087

    申请日:2004-04-19

    Abstract: A method and system for coordinating the use of beam forming between two communicating entities in a wireless communication system is disclosed. The two entities may communicate control information regarding their respective use of beam forming. A correction factor for at least one entity is provided wherein said entity may reduce or withhold its beam adjustment in order to correct any error measured in the alignment of its beam with respect to the beam of the other entity with which it is communicating. Adjustment parameters for adjusting the beams are selected based on conditions surrounding the communication.

    Abstract translation: 公开了一种在无线通信系统中协调两个通信实体之间的波束成形的使用的方法和系统。 两个实体可以传达关于它们各自使用波束形成的控制信息。 提供了至少一个实体的校正因子,其中所述实体可以减少或禁止其波束调整,以便校正其波束相对于其正在通信的另一实体的波束的对准中测量的任何误差。 根据通信条件选择调整光束的调整参数。

    GENERALIZED TWO-STAGE DATA ESTIMATION
    120.
    发明申请
    GENERALIZED TWO-STAGE DATA ESTIMATION 审中-公开
    一般两阶段数据估计

    公开(公告)号:WO2004064298A3

    公开(公告)日:2005-03-17

    申请号:PCT/US2004000463

    申请日:2004-01-08

    Abstract: Symbols are to be recovered from signals received in a shared spectrum. Codes of the signals received in the shared spectrum are processed using a block Fourier transform (FT 34), producing a code block diagonal matrix. A channel response of the received signals is estimated. The channel response is extended and modified (36) to produce a block circulant matrix and a block FT (38) is taken, producing a channel response block diagonal matrix. The code block diagonal matrix is combined (40, 44, 46) with the channel response block diagonal matrix. The received signals are sampled and processed using the combined code block diagonal matrix and the channel response block diagonal matrix with a Cholesky algorithm. A block inverse FT (60) is performed on a result of the Cholesky algorithm to produce spread symbols. The spread symbols are despread to recover symbols of the received signals.

    Abstract translation: 符号将从在共享频谱中接收的信号中恢复。 使用块傅里叶变换(FT 34)处理在共享频谱中接收的信号的码,产生码块对角矩阵。 估计接收信号的信道响应。 信道响应被扩展和修改(36)以产生块循环矩阵,并且采用块FT(38),产生信道响应块对角矩阵。 码块对角矩阵与信道响应块对角矩阵组合(40,44,46)。 使用Cholesky算法使用组合码块对角矩阵和信道响应块对角矩阵对接收到的信号进行采样和处理。 对Cholesky算法的结果执行块反向FT(60)以产生扩展符号。 扩展符号被解扩以恢复接收信号的符号。

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