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BEAMFORMING CODEBOOK ADAPTION TO ANTENNA ARRAY IMPERFECTIONS

机译:适应天线阵列缺陷的完善代码书

摘要

A transmitter includes an antenna array (202, 304) having a plurality of antennas for a wireless communication with one or more receivers, and a precoder (204) connected to the antenna array (202, 304). The precoder (204) applies a set of beamforming weights to the antenna array (202, 304). The set of beamforming weights is selected from a codebook (212) to form by the antenna array (202, 304) one or more transmit/receive beams or nulls pointing in selected directions. The codebook (212) includes a plurality of sets of beamforming weights for a plurality of directions. The beamforming weights in the codebook (212) are based on a first antenna array response matrix (Ã(φ, θ)), the first antenna array response matrix (Ã(φ, θ)) defined by a second antenna array response matrix (A(φ, θ)) and one or more transformation matrices (K, Kq). The first antenna array response matrix (Ã(φ, θ)) contains, for a plurality of directions, first array response vectors (ã((φm, θn)) of the antenna array (202, 304), the second antenna array response matrix (Α(φ, θ)) contains, for one or more of the plurality of directions, second array response vectors of the antenna array (202, 304), the second array response vectors determined using a model of the antenna array (202, 304), and the one or more transformation matrices (K, Kq) describing one or more characteristics of the antenna array (202, 304).
机译:发射器包括:天线阵列(202、304),其具有用于与一个或多个接收器进行无线通信的多个天线;以及预编码器(204),其连接至天线阵列(202、304)。预编码器(204)将一组波束成形权重应用于天线阵列(202、304)。从码本(212)中选择该组波束成形权重,以由天线阵列(202、304)形成一个或多个指向所选方向的发射/接收波束或零点。码本(212)包括用于多个方向的多组波束成形权重。码本(212)中的波束成形权重基于第一天线阵列响应矩阵(φ(θ,θ)),第二天线阵列响应矩阵(φ(θ,θ))定义的。 A(φ,θ))和一个或多个变换矩阵(K,K q )。第一天线阵列响应矩阵(Ã(φ,θ))包含多个方向的第一阵列响应向量(ã((φ m ,θ n )天线阵列(202、304)的第二天线响应矩阵(A(φ,θ))针对多个方向中的一个或多个包含天线阵列(202、304)的第二阵列响应矢量。 ,使用天线阵列(202、304)的模型确定的第二阵列响应矢量,以及描述天线阵列一个或多个特征的一个或多个变换矩阵(K,K q )( 202,304)。

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