Invention Grant
US08705443B2 System and method for reduced feedback in multiuser multiple input, multiple output wireless communications
有权
用于多用户多输入,多输出无线通信的减少反馈的系统和方法
- Patent Title: System and method for reduced feedback in multiuser multiple input, multiple output wireless communications
- Patent Title (中): 用于多用户多输入,多输出无线通信的减少反馈的系统和方法
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Application No.: US12711654Application Date: 2010-02-24
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Publication No.: US08705443B2Publication Date: 2014-04-22
- Inventor: Yang Tang , Pengfei Xia , Zhigang Rong
- Applicant: Yang Tang , Pengfei Xia , Zhigang Rong
- Applicant Address: US TX Plano
- Assignee: FutureWei Technologies, Inc.
- Current Assignee: FutureWei Technologies, Inc.
- Current Assignee Address: US TX Plano
- Agency: Slater & Matsil, L.L.P.
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04L12/16 ; H04Q11/00 ; H04L27/00

Abstract:
A system and method for reduced feedback in MU-MIMO communications is provided. A method for transmitter operations includes transmitting a pilot signal, receiving channel information feedback from a set of K communications devices served by a transmitter, where K is a non-negative integer value and K≧2, selecting M communications devices out of the set of K communications devices, where M is a non-negative integer value and M≦K, computing a precoder for each of the M selected communications devices based on the channel information feedback, and simultaneously transmitting information to the M selected communications devices. The channel information feedback includes partial information for a communications channel between the transmitter and a communications device, the selecting being based on the channel information feedback, and the information transmitted to each communications device in the M selected communications devices being precoded using a computed precoder associated with the communications device.
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