Invention Grant
US08284863B2 Apparatus and method for beamforming with limited feedforward channel in multiple input multiple output wireless communication system
有权
用于多输入多输出无线通信系统中具有有限前馈信道的波束成形的装置和方法
- Patent Title: Apparatus and method for beamforming with limited feedforward channel in multiple input multiple output wireless communication system
- Patent Title (中): 用于多输入多输出无线通信系统中具有有限前馈信道的波束成形的装置和方法
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Application No.: US12156001Application Date: 2008-05-29
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Publication No.: US08284863B2Publication Date: 2012-10-09
- Inventor: In-Soo Hwang , Jong-Hyung Kwun , David Mazzarese , Robert Heath, Jr. , Chan-Byoung Chae
- Applicant: In-Soo Hwang , Jong-Hyung Kwun , David Mazzarese , Robert Heath, Jr. , Chan-Byoung Chae
- Applicant Address: KR Suwon-si US TX Austin
- Assignee: Samsung Electronics Co., Ltd.,Board of Regents, The University of Texas
- Current Assignee: Samsung Electronics Co., Ltd.,Board of Regents, The University of Texas
- Current Assignee Address: KR Suwon-si US TX Austin
- Priority: KR10-2007-0051823 20070529
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04B7/06
Abstract:
An apparatus and method are provided for beamforming in a MIMO wireless communication system. A base station includes a first calculator that repeatedly calculates downlink beamforming vectors of the user terminals to calculate the optimal beamforming vectors for the user terminals, a quantizer that quantizes the downlink beamforming vectors in order to transmit information of the downlink beamforming vectors, a control channel transmitter that feeds forward information of the quantized downlink beamforming vectors to the user terminals, a second calculator that calculates the final downlink beamforming vectors of the user terminals, and a beamforming transmitter that sums the beamformed TX signals of the user terminals and transmits the summed TX signals through a plurality of TX antennas.
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