公开(公告)号：US20140160957A1

公开(公告)日：2014-06-12

申请号：US13730771

申请日：2012-12-28

Applicant: BROADCOM CORPORATION

Inventor： Jun Zheng ,  Nihar Jindal ,  Sirikiat Ariyavisitakul ,  Eric Ojard

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L5/0048 ,  H04L25/0224 ,  H04W24/06

Abstract: A dedicated calibration device may be utilized by a wireless transceiver device, such as a base station, to compute compensation matrices. The wireless transceiver device and the dedicated calibration device can exchange training sequence signals. Based on the exchanged training sequence signals, the wireless transceiver device and the dedicated calibration device can estimate overall baseband to baseband channel responses taking into account the amplitude and phase responses of the respective transmit and receive radio chains, and the wireless transceiver device can determine the compensation matrices. Furthermore, the wireless transceiver device can estimate a baseband-to-baseband uplink channel response relative to actual user equipment, approximate a downlink channel response using only one of the determined compensation matrices, and perform beamforming to the actual user equipment using the approximated downlink channel response.

Abstract translation: 专用校准装置可以由无线收发器装置（例如基站）利用来计算补偿矩阵。 无线收发器装置和专用校准装置可以交换训练序列信号。 基于交换的训​​练序列信号，无线收发器设备和专用校准设备可以考虑到相应的发射和接收无线电链的幅度和相位响应来估计总体基带到基带信道响应，并且无线收发器设备可以确定 补偿矩阵。 此外，无线收发器设备可以估计相对于实际用户设备的基带到基带上行链路信道响应，仅使用所确定的补偿矩​​阵之一近似下行链路信道响应，并且使用近似下行链路信道对实际用户设备执行波束成形 响应。