Systems and methods for beamforming feedback in millimeter wave wireless local area networks

The responder performs a hybrid beamforming operation by having a plurality of antennas configured to receive a training packet, responsively generating a beamformed received signal by processing the received training packet using previously determined analog beam coefficients, in one embodiment, a method includes receiving a received training packet, determining whether digital baseband channel (DBC) tracking is indicated based on a tracking type parameter included within the received training packet, processing a non-precoded training signal within a beamformed received signal and responsively determining a DBC estimate, and providing a feedback message based on the DBC estimate, the feedback message having transmitter precoder data. 响应器通过以下步骤来执行混合波束成形操作：具有多个天线，所述多个天线被配置成接收训练分组，通过使用先前确定的模拟波束系数处理接收的训练分组来响应地生成波束成形的接收信号，基于包含在所接收的训练分组内的跟踪类型参数确定数字基带信道(DBC)跟踪是否被指示，处理波束成形的接收信号内的非预编码训练信号并且响应地确定DBC估计，以及基于所述DBC估计提供反馈消息，所述反馈消息具有发射机预编码器数据。