公开(公告)号：US09729216B2

公开(公告)日：2017-08-08

申请号：US14768650

申请日：2014-03-07

Applicant: Nokia Technologies Oy

Inventor： Weidong Yang ,  Bishwarup Mondal ,  Eugene Visotsky ,  Klaus Hugl

IPC: H04L12/28 ,  H04B1/56 ,  H04B7/00 ,  H04J3/16 ,  H04B7/0456 ,  H04L25/03 ,  H04B7/0452

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04L25/0391

Abstract: Various communication systems may benefit from codebook methods and devices for multiple transmitters. For example, a codebook for four transmitters (4Tx) may provide further enhancement for downlink multiple-input multiple-output (DL-MIMO) systems. A method can include weighting a signal for transmission based on a precoder selected according to a feedback from a codebook, such as codebooks A, B, C, D, or E, described herein. The method can also include sending the weighted signal.

公开(公告)号：US20160006494A1

公开(公告)日：2016-01-07

申请号：US14768650

申请日：2014-03-07

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Weidong Yang ,  Bishwarup Mondal ,  Eugene Visotsky ,  Klaus Hugl

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04L25/0391

Abstract: Various communication systems may benefit from codebook methods and devices for multiple transmitters. For example, a codebook for four transmitters (4Tx) may provide further enhancement for downlink multiple-input multiple-output (DL-MIMO) systems. A method can include weighting a signal for transmission based on a precoder selected according to a feedback from a codebook, such as codebooks A, B, C, D, or E, described herein. The method can also include sending the weighted signal.

Abstract translation: 各种通信系统可能受益于用于多个发射机的码本方法和设备。 例如，用于四个发射机（4Tx）的码本可以为下行链路多输入多输出（DL-MIMO）系统提供进一步的增强。 方法可以包括基于根据本文所述的码本（例如码本A，B，C，D或E）的反馈选择的预编码器来加权用于传输的信号。 该方法还可以包括发送加权信号。