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    • 26. 发明申请
    • Method and system for aggregate channel estimation for frequency-selective transmit beamforming
    • 频率选择性发射波束成形的聚合信道估计方法和系统
    • US20070147533A1
    • 2007-06-28
    • US11317382
    • 2005-12-23
    • Timothy ThomasFrederick VookXiangyang Zhuang
    • Timothy ThomasFrederick VookXiangyang Zhuang
    • H04L1/02
    • H04L25/025H04B7/0617H04B7/0619H04B7/0689H04B7/0697H04B17/364H04L25/024
    • A system (10) and method (50) of operating a wireless communication system between a transmit device (12) employing an array of transmit antennas and a receiver (15) can include transmitting (52) a beamformed signal with antenna weights computed based on knowledge of a plurality of channels forming an aggregate channel and computing (54) a set of characteristics for the aggregate channel such as a power delay profile, a frequency correlation, or an expected beamforming gain of the aggregate channel. Characteristics can also be based on factors among a number of transmit antennas, a beamforming weight application delay value, an expected Doppler profile, or an expected delay profile of the propagation channel. The method can further determine (58) a channel estimator based on the computed set of characteristics, receive (62) the beamformed signal, and compute (64) an aggregate channel estimate as a function of the channel estimator and the beamformed signal.
    • 在采用发射天线阵列的发射设备(12)和接收机(15)之间操作无线通信系统的系统(10)和方法(50)可以包括:发射(52)波束形成的信号,其中天线权重基于 形成聚合信道的多个信道的知识,以及计算(54)聚合信道的一组特征,例如聚合信道的功率延迟分布,频率相关或期望的波束形成增益。 特性还可以基于多个发射天线中的因素,波束成形加权应用延迟值,期望的多普勒分布或传播信道的预期延迟分布。 该方法可以基于所计算的特征集合进一步确定(58)信道估计器,接收(62)波束形成的信号,并且计算(64)作为信道估计器和波束形成信号的函数的聚合信道估计。