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1. 发明授权

US08731083B2 Receiver and signal received power estimation method 有权
标题翻译：接收机和信号接收功率估计方法
公开(公告)号：US08731083B2
公开(公告)日：2014-05-20
申请号：US13579241
申请日：2011-02-10
申请人： Masahito Sakai , Koichi Tamura , Quang Nguyen , Chaitanya Rao
发明人： Masahito Sakai , Koichi Tamura , Quang Nguyen , Chaitanya Rao
IPC分类号： H04K1/10
CPC分类号： H04B17/318
摘要： In the case of a narrow band in which the number of sub-carriers to be used for the concurrent transmission is smaller than a predetermined value, an RSRP estimation unit carries out processes in an order of time-wise in-phase addition, frequency-wise averaging, and conjugate multiplication, with respect to the channel estimation values estimated by the channel estimation unit; and in the case of a wide band in which the number of sub-carriers to be used for the concurrent transmission is greater than the predetermined value, the RSRP estimation unit carries out processes in an order of frequency-wise averaging, conjugate multiplication, and time-wise in-phase addition, with respect to the channel estimation values estimated by the channel estimation unit.
摘要翻译：在用于并发传输的副载波数小于预定值的窄频带的情况下，RSRP估计单元按时间同相相加的顺序进行处理，对于由信道估计单元估计出的信道估计值，进行平均和共轭乘法; 在并行传输中使用的子载波数大于预定值的宽频带的情况下，RSRP估计单元按频率平均化，共轭乘法和相对于由信道估计单元估计出的信道估计值，是时间上的同相相加。

2. 发明申请

US20100329379A1 ESTIMATING CHANNEL CONDITIONS IN A MIMO OFDM COMMUNICATION SYSTEM 有权
标题翻译：估计MIMO OFDM通信系统中的信道条件
公开(公告)号：US20100329379A1
公开(公告)日：2010-12-30
申请号：US12865544
申请日：2009-01-30
申请人： Duong Pham , Chaitanya Rao , Thirukkumaran Sivahumaran
发明人： Duong Pham , Chaitanya Rao , Thirukkumaran Sivahumaran
IPC分类号： H04B1/10 , H04B7/02
CPC分类号： H04L5/0023 , H04B7/0617 , H04B7/0621 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04L5/006 , H04L25/0204 , H04L25/03343 , H04L27/2647
摘要： A method of estimating channel conditions for use in a MIMO communication system includes the steps of, at a receiver: computing a SINR metric for all pre-coding matrices; computing a first capacity metric for the bandwidth from the SINR metrics, and selecting a rank which maximizes the first capacity metric; computing a second capacity metric for each frequency channel from the SINR metrics and the selected rank, and selecting one or more pre-coding matrices which maximize the second capacity metric; computing a third capacity metric from the second capacity metric, selected rank and selected pre-coding matrices for each transmission layer within each frequency channel, and selecting one or more frequency channels which maximize the third capacity metric; and transmitting the selected rank, selected pre-coding matrices and selected frequency channels to the transmitter for use in subsequent data transmissions.
摘要翻译：估计在MIMO通信系统中使用的信道条件的方法包括以下步骤：在接收机处：计算所有预编码矩阵的SINR度量; 从所述SINR度量计算所述带宽的第一容量度量，以及选择使所述第一容量度量最大化的秩; 从所述SINR度量和所选择的秩计算每个频率信道的第二容量度量，以及选择使所述第二容量度量最大化的一个或多个预编码矩阵; 从每个频道内的每个传输层的第二容量度量，所选择的秩和选择的预编码矩阵计算第三容量度量，以及选择使第三容量度量最大化的一个或多个频率信道; 以及将所选择的等级，所选择的预编码矩阵和所选择的频率信道发射到所述发射机以用于后续数据传输。

3. 发明授权

US08379742B2 Estimating channel conditions in a MIMO OFDM communication system 有权
标题翻译：估计MIMO OFDM通信系统中的信道条件
公开(公告)号：US08379742B2
公开(公告)日：2013-02-19
申请号：US12865544
申请日：2009-01-30
申请人： Duong Pham , Chaitanya Rao , Thirukkumaran Sivahumaran
发明人： Duong Pham , Chaitanya Rao , Thirukkumaran Sivahumaran
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L5/0023 , H04B7/0617 , H04B7/0621 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04L5/006 , H04L25/0204 , H04L25/03343 , H04L27/2647
摘要： A method of estimating channel conditions for use in a MIMO communication system includes the steps of, at a receiver: computing a SINR metric for all pre-coding matrices; computing a first capacity metric for the bandwidth from the SINR metrics, and selecting a rank which maximizes the first capacity metric; computing a second capacity metric for each frequency channel from the SINR metrics and the selected rank, and selecting one or more pre-coding matrices which maximize the second capacity metric; computing a third capacity metric from the second capacity metric, selected rank and selected pre-coding matrices for each transmission layer within each frequency channel, and selecting one or more frequency channels which maximize the third capacity metric; and transmitting the selected rank, selected pre-coding matrices and selected frequency channels to the transmitter for use in subsequent data transmissions.
摘要翻译：估计在MIMO通信系统中使用的信道条件的方法包括以下步骤：在接收机处：计算所有预编码矩阵的SINR度量; 从所述SINR度量计算所述带宽的第一容量度量，以及选择使所述第一容量度量最大化的秩; 从所述SINR度量和所选择的秩计算每个频率信道的第二容量度量，以及选择使所述第二容量度量最大化的一个或多个预编码矩阵; 从每个频道内的每个传输层的第二容量度量，所选择的秩和选择的预编码矩阵计算第三容量度量，以及选择使第三容量度量最大化的一个或多个频率信道; 以及将所选择的等级，所选择的预编码矩阵和所选择的频率信道发射到所述发射机以用于后续数据传输。

4. 发明申请

US20130034191A1 RECEIVER AND SIGNAL RECEIVED POWER ESTIMATION METHOD 有权
标题翻译：接收机和信号接收功率估计方法
公开(公告)号：US20130034191A1
公开(公告)日：2013-02-07
申请号：US13579241
申请日：2011-02-10
申请人： Masahito Sakai , Koichi Tamura , Quang Nguyen , Chaitanya Rao
发明人： Masahito Sakai , Koichi Tamura , Quang Nguyen , Chaitanya Rao
IPC分类号： H04L1/20
CPC分类号： H04B17/318
摘要： In the case of a narrow band in which the number of sub-carriers to be used for the concurrent transmission is smaller than a predetermined value, an RSRP estimation unit carries out processes in an order of time-wise in-phase addition, frequency-wise averaging, and conjugate multiplication, with respect to the channel estimation values estimated by the channel estimation unit; and in the case of a wide band in which the number of sub-carriers to be used for the concurrent transmission is greater than the predetermined value, the RSRP estimation unit carries out processes in an order of frequency-wise averaging, conjugate multiplication, and time-wise in-phase addition, with respect to the channel estimation values estimated by the channel estimation unit.
摘要翻译：在用于并发传输的副载波数小于预定值的窄频带的情况下，RSRP估计单元按时间同相相加的顺序进行处理，对于由信道估计单元估计出的信道估计值，进行平均和共轭乘法; 在并行传输中使用的子载波数大于预定值的宽频带的情况下，RSRP估计单元按频率平均化，共轭乘法和相对于由信道估计单元估计出的信道估计值，是时间上的同相相加。

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