公开(公告)号：US20130177051A1

公开(公告)日：2013-07-11

申请号：US13784393

申请日：2013-03-04

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Kedar Shirali ,  Peter Loc

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/0617 ,  H04B17/21 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A transmitter beamforming technique for use in a MIMO wireless communication system determines a partial description of a reverse channel without determining a full dimensional description of the reverse channel. A correction matrix is developed from the partial description of the reverse channel and a description of the forward channel. The correction matrix is used to process signals to be transmitted via the forward channel, and a steering matrix is used to perform beamforming in the forward channel.

Abstract translation: 用于MIMO无线通信系统的发射机波束成形技术确定反向信道的部分描述，而不确定反向信道的全维度描述。 从反向信道的部分描述和正向信道的描述开发校正矩阵。 校正矩阵用于处理要经由正向信道发送的信号，并且使用导引矩阵来在前向信道中执行波束成形。

公开(公告)号：US08855228B2

公开(公告)日：2014-10-07

申请号：US13784393

申请日：2013-03-04

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Kedar Shirali ,  Peter Loc

IPC: H04B7/02 ,  H04B1/40

CPC classification number: H04B7/0413 ,  H04B7/0617 ,  H04B17/21 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A transmitter beamforming technique for use in a MIMO wireless communication system determines a partial description of a reverse channel without determining a full dimensional description of the reverse channel. A correction matrix is developed from the partial description of the reverse channel and a description of the forward channel. The correction matrix is used to process signals to be transmitted via the forward channel, and a steering matrix is used to perform beamforming in the forward channel.

Abstract translation: 用于MIMO无线通信系统的发射机波束成形技术确定反向信道的部分描述，而不确定反向信道的全维度描述。 从反向信道的部分描述和正向信道的描述开发校正矩阵。 校正矩阵用于处理要经由正向信道发送的信号，并且使用导引矩阵来在前向信道中执行波束成形。

公开(公告)号：US20130242928A1

公开(公告)日：2013-09-19

申请号：US13891784

申请日：2013-05-10

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Sandesh Goel ,  Timothy J. Donovan ,  Ken Kinwah Ho ,  Yungping Hsu ,  Kedar Shirali ,  Atul Salhotra ,  Tam Tran ,  Chia-Chun Chung

IPC: H04W72/04

CPC classification number: H04W72/04 ,  H04W74/0808

Abstract: A system including a physical layer module and a control module. The physical layer module is configured to generate a first clear channel assessment for a first sub-channel of a communication channel and generate a second clear channel assessment for a second sub-channel of the communication channel. The first clear channel assessment indicates whether the first sub-channel is free or busy. The second clear channel assessment indicates whether the second sub-channel is free or busy. The control module is configured to, in response to the second sub-channel being busy, extend a duration of the second clear channel assessment by a predetermined period of time, and transmit data via (i) only the first sub-channel or (ii) both the first sub-channel and the second sub-channel based on (a) the first clear channel assessment, (b) the second clear channel assessment, and (c) the extended duration of the first clear channel assessment.

Abstract translation: 一种包括物理层模块和控制模块的系统。 物理层模块被配置为对通信信道的第一子信道生成第一清除信道评估，并且生成用于通信信道的第二子信道的第二清除信道评估。 第一个清除频道评估表明第一个子频道是空闲还是忙碌。 第二个清除频道评估表明第二个子频道是空闲还是忙碌。 控制模块被配置为响应于第二子信道忙，将第二清除信道评估的持续时间延长预定时间段，并且经由（i）仅传送第一子信道或（ii） ）基于（a）第一清除信道评估，（b）第二清除信道评估和（c）第一清除信道评估的延长持续时间，第一子信道和第二子信道两者。

公开(公告)号：US09014207B2

公开(公告)日：2015-04-21

申请号：US13891784

申请日：2013-05-10

Applicant: Marvell World Trade Ltd.

Inventor： Sandesh Goel ,  Timothy J. Donovan ,  Ken Kinwah Ho ,  Yungping Hsu ,  Kedar Shirali ,  Atul Salhotra ,  Tam Tran ,  Chia-Chun Chung

IPC: H04L12/413 ,  H04W4/00 ,  H04W72/04 ,  H04W74/08

CPC classification number: H04W72/04 ,  H04W74/0808

Abstract: A system including a physical layer module and a control module. The physical layer module is configured to generate a first clear channel assessment for a first sub-channel of a communication channel and generate a second clear channel assessment for a second sub-channel of the communication channel. The first clear channel assessment indicates whether the first sub-channel is free or busy. The second clear channel assessment indicates whether the second sub-channel is free or busy. The control module is configured to, in response to the second sub-channel being busy, extend a duration of the second clear channel assessment by a predetermined period of time, and transmit data via (i) only the first sub-channel or (ii) both the first sub-channel and the second sub-channel based on (a) the first clear channel assessment, (b) the second clear channel assessment, and (c) the extended duration of the first clear channel assessment.

Abstract translation: 一种包括物理层模块和控制模块的系统。 物理层模块被配置为对通信信道的第一子信道生成第一清除信道评估，并且生成用于通信信道的第二子信道的第二清除信道评估。 第一个清除频道评估表明第一个子频道是空闲还是忙碌。 第二个清除频道评估表明第二个子频道是空闲还是忙碌。 控制模块被配置为响应于第二子信道忙，将第二清除信道评估的持续时间延长预定时间段，并且经由（i）仅传送第一子信道或（ii） ）基于（a）第一清除信道评估，（b）第二清除信道评估和（c）第一清除信道评估的延长持续时间，第一子信道和第二子信道两者。