公开(公告)号：US08532210B2

公开(公告)日：2013-09-10

申请号：US12360351

申请日：2009-01-27

申请人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

发明人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

IPC分类号： H04B7/02 ,  H04L27/00 ,  H04L23/00 ,  H04B7/08 ,  H04L7/00 ,  H04B7/06

CPC分类号： H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02B70/30 ,  Y02D50/10

摘要： The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

摘要翻译： 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。 本发明适用于闭环模式和开环模式。 在闭环模式中，基于信道状态信息（CSI）执行功率负载和特征波束形成。 信道编码数据流被多路复用成两个或多个数据流。 基于每个复用数据流上的CSI执行功率加载。 对每个配对子载波的数据流执行SFBC编码。 然后，基于CSI执行特征波束形成，以将本征束分布到多个发射天线。 功率加载可以在两个或更多个SFBC编码块上或在每个本征模上执行。 另外，对于弱本征模式，可以跨子载波或子载波组执行功率负载。

公开(公告)号：US20090129499A1

公开(公告)日：2009-05-21

申请号：US12360351

申请日：2009-01-27

申请人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

发明人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

IPC分类号： H04B7/02

CPC分类号： H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02B70/30 ,  Y02D50/10

摘要： The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

摘要翻译： 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。 本发明适用于闭环模式和开环模式。 在闭环模式中，基于信道状态信息（CSI）执行功率负载和特征波束形成。 信道编码数据流被多路复用成两个或多个数据流。 基于每个复用数据流上的CSI执行功率加载。 对每个配对子载波的数据流执行SFBC编码。 然后，基于CSI执行特征波束形成，以将本征束分布到多个发射天线。 功率加载可以在两个或更多个SFBC编码块上或在每个本征模上执行。 另外，对于弱本征模式，可以跨子载波或子载波组执行功率负载。

公开(公告)号：US07505529B2

公开(公告)日：2009-03-17

申请号：US11201695

申请日：2005-08-11

申请人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

发明人： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

IPC分类号： H04L27/00

CPC分类号： H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02B70/30 ,  Y02D50/10

摘要： The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

摘要翻译： 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。 本发明适用于闭环模式和开环模式。 在闭环模式中，基于信道状态信息（CSI）执行功率负载和特征波束形成。 信道编码数据流被多路复用成两个或多个数据流。 基于每个复用数据流上的CSI执行功率加载。 对每个配对子载波的数据流执行SFBC编码。 然后，基于CSI执行特征波束形成，以将本征束分布到多个发射天线。 功率负载可以在两个或更多个SFBC编码块上或每个本征模式上执行。 另外，对于弱本征模式，可以跨子载波或子载波组执行功率负载。

公开(公告)号：US20060072677A1

公开(公告)日：2006-04-06

申请号：US11201695

申请日：2005-08-11

申请人： Jaeyoung Kwak ,  Robert Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu Pasad

发明人： Jaeyoung Kwak ,  Robert Olesen ,  Aykut Bultan ,  Eldad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu Pasad

IPC分类号： H04K1/10

CPC分类号： H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02B70/30 ,  Y02D50/10

摘要： The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

公开(公告)号：US08130855B2

公开(公告)日：2012-03-06

申请号：US11254358

申请日：2005-10-20

申请人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

发明人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC分类号： H04L1/02 ,  H04B7/02

CPC分类号： H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

摘要： A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beamforming in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.

摘要翻译： 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC），空间复用（SM）和波束形成的方法和装置。 该系统包括具有多个发射天线的发射机和具有多个接收天线的接收机。 发射机产生至少一个数据流和多个空间流。 所生成的空间流的数量基于发射天线的数量和接收天线的数量。 发射机根据SFBC，SM和波束形成中的至少一个确定传输方案。 发射机根据所选择的传输方案向接收机发送数据流中的数据。

公开(公告)号：US09160492B2

公开(公告)日：2015-10-13

申请号：US13369768

申请日：2012-02-09

申请人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

发明人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L1/06 ,  H04B7/04 ,  H04B7/06 ,  H04L1/04 ,  H04L27/26 ,  H04L1/00 ,  H04L25/02

CPC分类号： H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.

摘要翻译： 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

公开(公告)号：US20120140845A1

公开(公告)日：2012-06-07

申请号：US13369768

申请日：2012-02-09

申请人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

发明人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC分类号： H04L27/04

CPC分类号： H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.

摘要翻译： 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

公开(公告)号：US20060133530A1

公开(公告)日：2006-06-22

申请号：US11254358

申请日：2005-10-20

申请人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Olesen ,  Aykut Bultan ,  Fatih Ozluturk

发明人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC分类号： H04L1/02

CPC分类号： H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

摘要： A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beamforming in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.

摘要翻译： 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC），空间复用（SM）和波束形成的方法和装置。 该系统包括具有多个发射天线的发射机和具有多个接收天线的接收机。 发射机产生至少一个数据流和多个空间流。 所生成的空间流的数量基于发射天线的数量和接收天线的数量。 发射机根据SFBC，SM和波束形成中的至少一个确定传输方案。 发射机根据所选择的传输方案向接收机发送数据流中的数据。

公开(公告)号：US07406130B2

公开(公告)日：2008-07-29

申请号：US11524225

申请日：2006-09-20

申请人： Yuejin Huang ,  Robert Lind Olesen ,  Chang-Soo Koo

发明人： Yuejin Huang ,  Robert Lind Olesen ,  Chang-Soo Koo

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L27/262 ,  H04B7/02 ,  H04B7/0684 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0226 ,  H04L27/261 ,  H04L27/2614

摘要： The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by cyclically shifting the basic code. The training sequences are transmitted from different antennas in parallel without performing inverse fast Fourier transform. As a result, there is no peak-to-average ratio problem. Channel estimation is performed in each receiver based on the samples before fast Fourier transform and the maximum-likelihood estimate of channel response in time domain is then mapped into the frequency domain. The channel estimation is not only very simple in implementation, but also very efficient in computation.

摘要翻译： 本发明涉及一种用于在正交频分复用（OFDM）多输入多输出（MIMO）无线通信系统中优化信道估计和同步的方法和系统。 根据本发明，通过循环移位基本代码，基于基本代码简单地构建所有的训练序列。 训练序列并行地从不同的天线发射，而不进行快速傅立叶逆变换。 因此，没有峰均比例问题。 基于快速傅立叶变换之前的样本在每个接收机中执行信道估计，然后将时域中的信道响应的最大似然估计值映射到频域。 信道估计不仅在实现上非常简单，而且在计算上也非常有效。

公开(公告)号：US07120201B2

公开(公告)日：2006-10-10

申请号：US11222171

申请日：2005-09-08

申请人： Yuejin Huang ,  Robert Lind Olesen ,  Chang-Soo Koo

发明人： Yuejin Huang ,  Robert Lind Olesen ,  Chang-Soo Koo

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L27/262 ,  H04B7/02 ,  H04B7/0684 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0226 ,  H04L27/261 ,  H04L27/2614

摘要： The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by cyclically shifting the basic code. The training sequences are transmitted from different antennas in parallel without performing inverse fast Fourier transform. As a result, there is no peak-to-average ratio problem. Channel estimation is performed in each receiver based on the samples before fast Fourier transform and the maximum-likelihood estimate of channel response in time domain is then mapped into the frequency domain. The channel estimation is not only very simple in implementation, but also very efficient in computation.