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1. 发明申请

US20090080549A1 Efficient MIMO precoding feedback scheme 有权
标题翻译：高效MIMO预编码反馈方案
公开(公告)号：US20090080549A1
公开(公告)日：2009-03-26
申请号：US12216422
申请日：2008-07-03
申请人： Farooq Khan , Zhouyue Pl , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Farooq Khan , Zhouyue Pl , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04K1/10
CPC分类号： H04L25/03343 , H04B7/0417 , H04B7/0478 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L25/0204 , H04L25/0228 , H04L2025/03414 , H04L2025/03426
摘要： Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information.
摘要翻译：用于在多输入多输出（MIMO）系统中有效地反馈先前信息的方法和装置。构造包括多个码本条目的码本。为码本定义了多个码本条目子集。每个子集包括多个码本条目。根据信道条件选择码本条目的子集用于预编码数据，并从子集中选择码本条目。然后，作为反馈信息发送对应于所选择的子集的子集索引以及与所选择的子集内的所选码本条目相对应的码本条目索引。

2. 发明授权

US08401107B2 Transmit methods with delay diversity and space-frequency diversity 有权
公开(公告)号：US08401107B2
公开(公告)日：2013-03-19
申请号：US13448090
申请日：2012-04-16
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
IPC分类号： H04B7/02 , H04B7/06 , H04B7/08 , H04L27/26 , H04L1/02
CPC分类号： H04L1/0606 , H04B7/0456 , H04B7/0486 , H04B7/0671 , H04L1/0668 , H04L1/08 , H04L1/1819 , H04L5/0023 , H04L25/03898 , H04L27/2626
摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.

3. 发明授权

US07629902B2 MIMO wireless precoding system robust to power imbalance 有权
标题翻译： MIMO无线预编码系统强大的功率不平衡
公开(公告)号：US07629902B2
公开(公告)日：2009-12-08
申请号：US12155235
申请日：2008-05-30
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
IPC分类号： H03M7/00
CPC分类号： H04L27/2601 , H04L25/0204 , H04L25/0224 , H04L25/0242
摘要： The present invention relates to methods and apparatus for preventing power imbalance in a multiple input multiple output (MIMO) wireless precoding system. According to one aspect of the present invention, a codebook is constructed with a first subset of codewords that are constant modulus matrices, and a second subset of codewords that are non-constant modulus matrices. A mapping scheme is established between the first subset of codewords and the second subset of codewords. When a unit of user equipment feeds back a first codeword that is a non-constant modulus matrix, the Node-B may replace the first codewords with a second codeword that is selected from the first subset of codewords and that corresponds to the first codeword in accordance with the mapping scheme.
摘要翻译：本发明涉及用于防止多输入多输出（MIMO）无线预编码系统中的功率不平衡的方法和装置。根据本发明的一个方面，使用作为恒模矩阵的码字的第一子集以及作为非恒定模数矩阵的码字的第二子集构造码本。在码字的第一子集和码字的第二子集之间建立映射方案。当用户设备的单元反馈作为非恒定模数矩阵的第一码字时，节点B可以用从码字的第一子集中选择并且对应于第一码字的第二码字来替换第一码字，按照映射方案。

4. 发明申请

US20090028264A1 Transmit methods with delay diversity and space-frequency diversity 有权
标题翻译：具有延迟分集和空间 - 频率分集的发射方法
公开(公告)号：US20090028264A1
公开(公告)日：2009-01-29
申请号：US12155319
申请日：2008-06-02
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
IPC分类号： H04B7/02
CPC分类号： H04L1/0606 , H04B7/0456 , H04B7/0486 , H04B7/0671 , H04L1/0668 , H04L1/08 , H04L1/1819 , H04L5/0023 , H04L25/03898 , H04L27/2626
摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.
摘要翻译：在本发明中，提出了包含小延迟CDD码字循环，小型和大型延迟CDD的不同重新传输之间的码字循环的几种开环解决方案。此外，提出了用于SFBC + FSTD方案的开环码字循环方法，以及其对基于SFBC + FSTD的HARQ的扩展。在一种方法中，多个信息比特被编码，加扰和调制以产生多个调制符号。多个调制符号被映射到传输资源的至少一个传输层中的子载波上。然后通过使用用于循环延迟分集的矩阵和来自某个码本的一组码字来生成多个预编码符号来对调制符号进行预编码。每个一定数量的副载波循环码字。最后，预编码符号经由多个发送天线发送。

5. 发明申请

US20080303699A1 MIMO wireless precoding system robust to power imbalance 有权
标题翻译： MIMO无线预编码系统强大的功率不平衡
公开(公告)号：US20080303699A1
公开(公告)日：2008-12-11
申请号：US12155235
申请日：2008-05-30
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
IPC分类号： H03M7/40 , H04L27/12
CPC分类号： H04L27/2601 , H04L25/0204 , H04L25/0224 , H04L25/0242
摘要： The present invention relates to methods and apparatus for preventing power imbalance in a multiple input multiple output (MIMO) wireless precoding system. According to one aspect of the present invention, a codebook is constructed with a first subset of codewords that are constant modulus matrices, and a second subset of codewords that are non-constant modulus matrices. A mapping scheme is established between the first subset of codewords and the second subset of codewords. When a unit of user equipment feeds back a first codeword that is a non-constant modulus matrix, the Node-B may replace the first codewords with a second codeword that is selected from the first subset of codewords and that corresponds to the first codeword in accordance with the mapping scheme.
摘要翻译：本发明涉及用于防止多输入多输出（MIMO）无线预编码系统中的功率不平衡的方法和装置。根据本发明的一个方面，使用作为恒模矩阵的码字的第一子集以及作为非恒定模数矩阵的码字的第二子集构造码本。在码字的第一子集和码字的第二子集之间建立映射方案。当用户设备的单元反馈作为非恒定模数矩阵的第一码字时，节点B可以用从码字的第一子集中选择并且对应于第一码字的第二码字来替换第一码字，按照映射方案。

6. 发明申请

US20080298482A1 Multi-user MIMO feedback and transmission in a wireless communication system 有权
标题翻译：无线通信系统中的多用户MIMO反馈和传输
公开(公告)号：US20080298482A1
公开(公告)日：2008-12-04
申请号：US11979266
申请日：2007-10-31
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
IPC分类号： H04L27/28
CPC分类号： H04B7/0639 , H04B7/0478 , H04B7/065 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/03343 , H04L27/2601 , H04L2001/0093
摘要： The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.
摘要翻译：本发明提供了一种在无线通信系统中反馈和传输多用户（MU）多输入多输出（MIMO）的方法。该方法包括基于基站的业务负载选择子码本或全码本，并将所选码本广播给用户设备的步骤。在高流量负载下，选择子码本，在低流量负载下，选择完整的码本。用户站计算包含在所选码本中的空间码字矢量的信道质量指示符。最大信道质量指示符的信息与用户设备的预编码器一起发送到基站。基站根据最大信道质量指示符和预编码器的信息选择用户设备，并向用户设备发送预编码信号和数据信号。本发明还提供一种使基站执行上述操作的基站的系统。

7. 发明授权

US08325839B2 Simple MIMO precoding codebook design for a MIMO wireless communications system 失效
标题翻译：用于MIMO无线通信系统的简单MIMO预编码码本设计
公开(公告)号：US08325839B2
公开(公告)日：2012-12-04
申请号：US12155835
申请日：2008-06-10
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan , Zhouyue Pi
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan , Zhouyue Pi
IPC分类号： H04B7/02
CPC分类号： H04L25/0204 , H04L1/0065 , H04L1/0656 , H04L1/0675 , H04L5/0023 , H04L5/0053 , H04L5/006 , H04L25/0224 , H04L25/0242 , H04L25/03159 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： The present invention relates to methods and apparatus for establishing a precoding codebook for a Multiple Input Multiple Output (MIMO) wireless communication system. The precoding codebook includes a plurality of codebook entries. Each codebook entry includes four sets of vectors for four respective corresponding transmission ranks. The vectors may be predetermined, or generated from source unitary matrices. In addition, the codebook is fully nested.
摘要翻译：本发明涉及用于建立多输入多输出（MIMO）无线通信系统的预编码码本的方法和装置。预编码码本包括多个码本条目。每个码本条目包括用于四个相应的相应传输等级的四组向量。矢量可以是预定的，或者从源酉矩阵生成。另外，码本是完全嵌套的。

8. 发明授权

US07649831B2 Multi-user MIMO feedback and transmission in a wireless communication system 有权
标题翻译：无线通信系统中的多用户MIMO反馈和传输
公开(公告)号：US07649831B2
公开(公告)日：2010-01-19
申请号：US11979266
申请日：2007-10-31
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
IPC分类号： H04J11/00
CPC分类号： H04B7/0639 , H04B7/0478 , H04B7/065 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/03343 , H04L27/2601 , H04L2001/0093
摘要： The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.
摘要翻译：本发明提供了一种在无线通信系统中反馈和传输多用户（MU）多输入多输出（MIMO）的方法。该方法包括基于基站的业务负载选择子码本或全码本，并将所选码本广播给用户设备的步骤。在高流量负载下，选择子码本，在低流量负载下，选择完整的码本。用户站计算包含在所选码本中的空间码字矢量的信道质量指示符。最大信道质量指示符的信息与用户设备的预编码器一起发送到基站。基站根据最大信道质量指示符和预编码器的信息选择用户设备，并向用户设备发送预编码信号和数据信号。本发明还提供一种使基站执行上述操作的基站的系统。

9. 发明授权

US08989285B2 Efficient MIMO precoding feedback scheme 有权
公开(公告)号：US08989285B2
公开(公告)日：2015-03-24
申请号：US12216422
申请日：2008-07-03
申请人： Farooq Khan , Zhouyue Pi , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Farooq Khan , Zhouyue Pi , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04K1/10 , H04L27/28 , H04L25/03 , H04B7/04 , H04L5/00 , H04L25/02
CPC分类号： H04L25/03343 , H04B7/0417 , H04B7/0478 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L25/0204 , H04L25/0228 , H04L2025/03414 , H04L2025/03426
摘要： Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information.

10. 发明授权

US08160177B2 Transmit methods with delay diversity and space-frequency diversity 有权
标题翻译：具有延迟分集和空间 - 频率分集的发射方法
公开(公告)号：US08160177B2
公开(公告)日：2012-04-17
申请号：US12155319
申请日：2008-06-02
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
IPC分类号： H04B7/06
CPC分类号： H04L1/0606 , H04B7/0456 , H04B7/0486 , H04B7/0671 , H04L1/0668 , H04L1/08 , H04L1/1819 , H04L5/0023 , H04L25/03898 , H04L27/2626
摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.
摘要翻译：在本发明中，提出了包含小延迟CDD码字循环，小型和大型延迟CDD的不同重新传输之间的码字循环的几种开环解决方案。此外，提出了用于SFBC + FSTD方案的开环码字循环方法，以及其对基于SFBC + FSTD的HARQ的扩展。在一种方法中，多个信息比特被编码，加扰和调制以产生多个调制符号。多个调制符号被映射到传输资源的至少一个传输层中的子载波上。然后通过使用用于循环延迟分集的矩阵和来自某个码本的一组码字来生成多个预编码符号来对调制符号进行预编码。每个一定数量的副载波循环码字。最后，预编码符号经由多个发送天线发送。

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