公开(公告)号：US09923617B2

公开(公告)日：2018-03-20

申请号：US14257949

申请日：2014-04-21

Applicant: Apple Inc.

Inventor： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC: H04B7/04 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03

CPC classification number: H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0656 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03426

Abstract: Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.

公开(公告)号：US20140226744A1

公开(公告)日：2014-08-14

申请号：US14257949

申请日：2014-04-21

Applicant: Apple Inc.

Inventor： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC: H04B7/04

CPC classification number: H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0656 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03426

Abstract: Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.

Abstract translation: 提供了在多用户通信系统中优化通信信道的系统和方法。 基于用于发射机和多个接收机之间的通信信道的通信信道状态信息来确定编码权重。 编码权重被应用于从发射机发射到接收机的通信信号。 每个接收机使用反编码权重来解码接收到的信号。 本发明的实施例支持多用户MIMO（多输入多输出），其中每个接收机具有比发射机更少的天线，并且如果所有接收机的天线总数超过发射机的天线数量，则增强系统性能。