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1.发明授权公开(公告)号：US07890144B2
公开(公告)日：2011-02-15
申请号：US12257200
申请日：2008-10-23
申请人： Anand D. Subramaniam , Tamer Kadous
发明人： Anand D. Subramaniam , Tamer Kadous
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译： 技术被提供以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而可以打开或关闭每个NT个发射天线。 一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。 达NT！ 对订单进行评估。 对于每个排序，对于NT个发射天线获得NT后检测SNR，并且用于确定NT数据速率，其中如果后检测SNR比最小所需SNR更差，则数据速率为零。 基于NT数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 最多NT个符号流以所选择的排序和传输的数据速率进行处理。 所发送的符号流根据所选择的顺序被恢复。
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2.发明申请TRANSMISSION SCHEMES FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING MULTI-CARRIER MODULATION 审中-公开使用多载波调制的多天线通信系统的传输方案公开(公告)号：US20100003931A1
公开(公告)日：2010-01-07
申请号：US12558073
申请日：2009-09-11
IPC分类号： H04B7/02
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
摘要翻译： 提供了利用多载波调制的多天线通信系统的导频和数据传输方案。 使用子带复用来避免从多个天线同时发送多个信号导致的干扰。 M个可用的子带最初被布置成形成多个子带组，每组包括可用子带的不同子集。 每个T发射天线然后被分配一个或可能更多的子带组用于导频传输，并且通常用于一个子带组用于数据传输。 然后可以从分配给该天线的子带上的每个天线发送导频和数据用于导频和数据传输。 对于每个发射天线，每个分配的子带的发射功率可以被缩放更高，使得可用于天线的全部发射功率被用于传输。 导频和/或数据可以在所有可用子带上从所有T个天线同时传输而不引起相互干扰。
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3.发明授权公开(公告)号：US06917821B2
公开(公告)日：2005-07-12
申请号：US10670079
申请日：2003-09-23
申请人： Tamer Kadous , Anand D. Subramaniam
发明人： Tamer Kadous , Anand D. Subramaniam
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译： 提供技术以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而N T个发射天线中的每一个可以被接通或断开。 一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。 直到N＆lt; T＆gt;！ 对订单进行评估。 对于每个排序，对于N T T T个发射天线获得N检测后的SNR，并且用于确定N T T T T T T T T T T T T N T N T N T T T T N T T N T N T T N T T N T N T 如果后检测SNR比最小所需SNR更差，速率为零。 基于N SUB数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 按照所选择的排序和发送的数据速率处理多达N个T个符号流。 所发送的符号流根据所选择的顺序被恢复。
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4.发明授权公开(公告)号：US07457639B2
公开(公告)日：2008-11-25
申请号：US11137982
申请日：2005-05-24
申请人： Anand D. Subramaniam , Tamer Kadous
发明人： Anand D. Subramaniam , Tamer Kadous
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译： 提供技术以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而N T个发射天线中的每一个可以被接通或断开。 一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。 直到N＆lt; T＆gt;！ 对订单进行评估。 对于每个排序，对于N T T T个发射天线获得N检测后的SNR，并且用于确定N T T T T T T T T T T T T N T N T N T T T T N T T N T N T T N T T N T N T 如果后检测SNR比最小所需SNR更差，速率为零。 基于N SUB数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 按照所选择的排序和发送的数据速率处理多达N个T个符号流。 所发送的符号流根据所选择的顺序被恢复。
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5.发明授权公开(公告)号：US07095790B2
公开(公告)日：2006-08-22
申请号：US10375191
申请日：2003-02-25
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
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6.发明授权Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 有权利用多载波调制的多天线通信系统的传输方案公开(公告)号：US07606326B2
公开(公告)日：2009-10-20
申请号：US11501130
申请日：2006-08-07
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
摘要翻译： 提供了利用多载波调制的多天线通信系统的导频和数据传输方案。 使用子带复用来避免从多个天线同时发送多个信号导致的干扰。 M个可用的子带最初被布置成形成多个子带组，每组包括可用子带的不同子集。 然后，每个T发射天线被分配一个或可能更多的子带组用于导频传输，并且通常用于数据传输的一个子带组。 然后可以从分配给该天线的子带上的每个天线发送导频和数据用于导频和数据传输。 对于每个发射天线，每个分配的子带的发射功率可以被缩放更高，使得可用于天线的全部发射功率被用于传输。 导频和/或数据可以在所有可用子带上从所有T个天线同时传输而不引起相互干扰。
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7.发明申请SUCCESSIVE INTERFERENCE CANCELLATION RECEIVER PROCESSING WITH SELECTION DIVERSITY 有权具有选择性多样性的连续干扰消除接收器处理公开(公告)号：US20090046802A1
公开(公告)日：2009-02-19
申请号：US12257200
申请日：2008-10-23
申请人： Anand D. Subramaniam , Tamer Kadous
发明人： Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04B7/02
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译： 技术被提供以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而可以打开或关闭每个NT个发射天线。 一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。 达NT！ 对订单进行评估。 对于每个排序，对于NT个发射天线获得NT后检测SNR，并且用于确定NT数据速率，其中如果后检测SNR比最小所需SNR更差，则数据速率为零。 基于NT数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 最多NT个符号流以所选择的排序和传输的数据速率进行处理。 所发送的符号流根据所选择的顺序被恢复。
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8.发明授权公开(公告)号：US09860033B2
公开(公告)日：2018-01-02
申请号：US13271113
申请日：2011-10-11
IPC分类号： H04L5/00 , H04L27/26 , H04B7/04 , H04B7/06 , H04B7/0456
CPC分类号： H04L5/0023 , H04B7/0456 , H04B7/061 , H04B7/0671 , H04B7/0691 , H04B7/0697 , H04L27/2602
摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.
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公开(公告)号：US08654705B2
公开(公告)日：2014-02-18
申请号：US12754018
申请日：2010-04-05
IPC分类号： H04W52/04
CPC分类号： H04B7/0613 , H04B7/0617 , H04B7/0619 , H04B7/0634 , H04B7/0691 , H04B7/0695 , H04W52/42
摘要： Techniques for rank adaptation and multiple-stream reverse link communications in a wireless access network are disclosed. A remote unit transmits one or more reverse link data streams using separate identifiers to a base station. The number of reverse link data streams may be determined according to feedback from the base station or it may be determined by testing one or more multiple-antenna transmit hypotheses. The base station may estimate channel conditions using information obtained from the one or more reverse link data streams and may determine a spatial rank of the communication channel. The remote unit may perform separate error control and power control processes for each reverse link data stream in cooperation with the base station.
摘要翻译： 公开了一种用于无线接入网络中的秩适配和多流反向链路通信的技术。 远程单元使用单独的标识符向基站发送一个或多个反向链路数据流。 反向链路数据流的数量可以根据来自基站的反馈来确定，或者可以通过测试一个或多个多天线发射假设来确定。 基站可以使用从一个或多个反向链路数据流获得的信息估计信道条件，并且可以确定通信信道的空间等级。 远程单元可以与基站协作地为每个反向链路数据流执行单独的错误控制和功率控制过程。
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公开(公告)号：US08619717B2
公开(公告)日：2013-12-31
申请号：US12690307
申请日：2010-01-20
申请人： Avneesh Agrawal , Rajiv Vijayan , Tamer Kadous
发明人： Avneesh Agrawal , Rajiv Vijayan , Tamer Kadous
IPC分类号： H04B7/00
CPC分类号： H04L1/0618 , H04B7/0417 , H04B7/0443 , H04B7/0465 , H04B7/0615 , H04B7/0891 , H04W52/34 , H04W52/42
摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.
摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。
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