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11. 发明申请

US20120140838A1 METHOD AND APPARATUS FOR ANTENNA DIVERSITY IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS 有权
标题翻译：多输入多输出通信系统中天线多样性的方法与装置
公开(公告)号：US20120140838A1
公开(公告)日：2012-06-07
申请号：US13271113
申请日：2011-10-11
申请人： Tamer Kadous , Aamod Khandekar , Dhananjay Ashok Gore , Alexei Gorokhov
发明人： Tamer Kadous , Aamod Khandekar , Dhananjay Ashok Gore , Alexei Gorokhov
IPC分类号： H04B7/02 , H04L27/28
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.
摘要翻译：描述了可以灵活地实现期望的空间复用顺序，空间分集顺序和信道估计开销顺序的传输方案。对于数据传输，确定接收机的分配子载波和空间复用顺序（M），其中M≥1。对于每个分配的子载波，从由正交矩阵的V列形成的V个虚拟天线中选择M个虚拟天线，其中V≥M。可以选择V以实现期望的空间分集顺序和信道估计开销顺序。通过应用正交矩阵将输出符号映射到为每个分配的副载波选择的M个虚拟天线。导频符号也映射到V虚拟天线。映射的符号被提供用于从T发射天线发射，其中T≥V。为映射符号生成传输符号，例如，基于OFDM或SC-FDMA。可以对T发射天线应用不同的循环延迟以改善分集。

12. 发明授权

US08107517B2 Average-tap energy based thresholding for channel estimation in multi antenna systems 有权
标题翻译：用于多天线系统中信道估计的平均抽头能量阈值
公开(公告)号：US08107517B2
公开(公告)日：2012-01-31
申请号：US11560735
申请日：2006-11-16
申请人： Ayman Fawzy Naguib , Dhananjay Ashok Gore , Alexei Gorokhov , Tamer Kadous
发明人： Ayman Fawzy Naguib , Dhananjay Ashok Gore , Alexei Gorokhov , Tamer Kadous
IPC分类号： H04B17/00
CPC分类号： H04L27/2647 , H04L1/0631 , H04L25/022
摘要： Techniques to facilitate estimating the frequency response of a wireless channel in an OFDM system are provided. The method and systems allow for combining signal information across multiple communication channels at one or more channel tap delays in order to determine appropriate taps for channel information.
摘要翻译：提供了有助于估计OFDM系统中的无线信道的频率响应的技术。该方法和系统允许在一个或多个信道抽头延迟的情况下在多个通信信道上组合信号信息，以便确定用于信道信息的合适的抽头。

13. 发明授权

US08139672B2 Method and apparatus for pilot communication in a multi-antenna wireless communication system 有权
标题翻译：用于多天线无线通信系统中的导频通信的方法和装置
公开(公告)号：US08139672B2
公开(公告)日：2012-03-20
申请号：US11390622
申请日：2006-03-27
申请人： Dhananjay Ashok Gore , Tingfang Ji , Tamer Kadous
发明人： Dhananjay Ashok Gore , Tingfang Ji , Tamer Kadous
IPC分类号： H04L27/00
CPC分类号： H04L27/2613 , H04B7/0413 , H04L25/0226
摘要： Systems and methodologies are described that facilitate improved pilot information to MIMO user devices without increasing interference of SISO user devices in a wireless communication environment. A data communication signal can be generated and transmitted at a first power level, and a continuous pilot waveform comprising pilot information related to the data signal can be generated and sent at a second power level below the first transmission power level. Alternatively, a discontinuous pilot waveform can be generated so that it does not overlap with pilot segments in the first waveform, and can be transmitted at the first power level without interfering with the first waveform as received by a SISO user device. A MIMO user device can receive both waveforms, and can employ the pilot waveform to better estimate a MIMO channel for the first waveform.
摘要翻译：描述了在不增加SISO用户设备在无线通信环境中的干扰的情况下促进对MIMO用户设备的改进的导频信息的系统和方法。可以以第一功率电平生成并发送数据通信信号，并且可以以低于第一发送功率电平的第二功率电平生成包括与数据信号相关的导频信息的连续导频波形。或者，可以生成不连续的导频波形，使得其不与第一波形中的导频段重叠，并且可以在不干扰由SISO用户设备接收的第一波形的情况下以第一功率电平发送。 MIMO用户设备可以接收两个波形，并且可以使用导频波形来更好地估计用于第一波形的MIMO信道。

14. 发明授权

US09143305B2 Pilot signal transmission for an orthogonal frequency division wireless communication system 有权
标题翻译：用于正交频分无线通信系统的导频信号传输
公开(公告)号：US09143305B2
公开(公告)日：2015-09-22
申请号：US11083693
申请日：2005-03-17
申请人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
发明人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
IPC分类号： H04J11/00 , H04L5/02 , H04L5/00 , H04L27/26 , H04B3/10 , H04W4/00 , H04L12/16
CPC分类号： H04L5/023 , H04L5/0007 , H04L5/0039 , H04L5/0051 , H04L5/0062 , H04L27/261
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The pattern allows for improved receipt of the pilot symbols transmitted. In addition, schemes for improving the ability to multiplex pilot symbols without interference and/or biasing from different mobile stations over the same frequencies and in the same time slots.
摘要翻译：提供从移动台或基站发送的导频符号的传输模式。该模式允许改进对所发送的导频符号的接收。另外，用于在相同的频率和相同的时隙中提高在不干扰和/或来自不同移动台的偏置的情况下导频符号的复用能力的方案。

15. 发明授权

US09461859B2 Pilot signal transmission for an orthogonal frequency division wireless communication system 有权
公开(公告)号：US09461859B2
公开(公告)日：2016-10-04
申请号：US11261361
申请日：2005-10-27
申请人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
发明人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
IPC分类号： H04B3/10 , H04L27/26 , H04W16/28 , H04W72/12 , H04B1/715 , H04L5/00 , H04L25/03 , H04B7/04 , H04B7/12 , H04L1/00 , H04L25/02
CPC分类号： H04L27/2613 , H04B1/715 , H04B7/0413 , H04B7/12 , H04B2001/7154 , H04L1/0026 , H04L5/0023 , H04L5/0051 , H04L5/0058 , H04L25/0204 , H04L25/0216 , H04L25/0222 , H04L25/0226 , H04L25/0228 , H04L25/03866 , H04L27/261 , H04W16/28 , H04W72/1205
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The pattern allows for improved receipt of the pilot symbols transmitted for frequency selective channels and users. In addition, schemes for improving the ability to multiplex pilot symbols without interference and/or biasing from different mobile stations over the same frequencies and in the same time slots.

16. 发明授权

US08693405B2 SDMA resource management 有权
标题翻译： SDMA资源管理
公开(公告)号：US08693405B2
公开(公告)日：2014-04-08
申请号：US11261837
申请日：2005-10-27
申请人： Tingfang Ji , Dhananjay Ashok Gore , Alexei Gorokhov , Min Dong , Avneesh Agrawal
发明人： Tingfang Ji , Dhananjay Ashok Gore , Alexei Gorokhov , Min Dong , Avneesh Agrawal
IPC分类号： H04B7/00
CPC分类号： H04W72/06 , H04B1/713 , H04B7/026 , H04L5/0023 , H04L5/0037 , H04L5/0044 , H04L5/023
摘要： A method for allocating resources in a wireless communications environment comprises receiving a mapping between a first hop-port and frequency range, and determining whether to map a second access terminal to a second hop-port that is mapped to at least the same frequency range during a substantially similar instance in time, the determination made as a function of characteristics relating to a first access terminal associated with the first hop-port. The method can further include determining that the first access terminal is a candidate for employing Space-Division Multiple Access (SDMA), and mapping the second-hop port and associating the second access terminal with the second hop-port when the second access terminal is also a candidate for employing SDMA.
摘要翻译：一种用于在无线通信环境中分配资源的方法包括：接收第一跳跃端口和频率范围之间的映射，以及确定是否将第二接入终端映射到映射到至少相同频率范围的第二跳频端口基本相似的时间实例，根据与与第一跳跃端口相关联的第一接入终端的特性的函数进行确定。该方法还可以包括确定第一接入终端是采用空分多址（SDMA）的候选者，并且当第二接入终端是第二接入终端时，映射第二跳接口并将第二接入终端与第二跳接口相关联也是采用SDMA的候选人。

17. 发明申请

US20100238902A1 Channel Structures for a Quasi-Orthogonal Multiple-Access Communication System 有权
标题翻译：准正交多址通信系统的信道结构
公开(公告)号：US20100238902A1
公开(公告)日：2010-09-23
申请号：US12791702
申请日：2010-06-01
申请人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
发明人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
IPC分类号： H04W72/04 , H04W36/00
CPC分类号： H04J11/005 , H04B1/7143
摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.
摘要翻译：通道结构具有至少两个通道组。每个信道集合包含多个信道，并且将信道的特定映射与可用于数据传输的系统资源相关联。可以基于具有分层结构的信道树来定义每个信道集合。为了实现小区内干扰分集，每个信道集合的信道到资源映射相对于每个剩余信道集合的映射是伪随机的。在每个调度间隔中，终端被调度为在前向链路和/或反向链路上传输。调度终端从通道集分配通道。多个终端可以使用相同的系统资源，并且它们的重叠传输可以在空间域中分离。例如，可以执行波束成形以在前向链路上发送多个重叠传输，并且可以执行接收机空间处理以分离在反向链路上接收的多个重叠传输。

18. 发明授权

US09520972B2 Pilot signal transmission for an orthogonal frequency division wireless communication system 有权
公开(公告)号：US09520972B2
公开(公告)日：2016-12-13
申请号：US11083708
申请日：2005-03-17
申请人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
发明人： Alexei Gorokhov , Ayman Fawzy Naguib , Arak Sutivong , Dhananjay Ashok Gore , Tingfang Ji
IPC分类号： H04K1/10 , H04L27/28 , H04L5/00
CPC分类号： H04L5/0048 , H04L5/0023
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The pattern allows for improved receipt of the pilot symbols transmitted. In addition, schemes for improving the ability to multiplex pilot symbols without interference and/or biasing from different mobile stations over the same frequencies and in the same time slots.

19. 发明授权

US08446892B2 Channel structures for a quasi-orthogonal multiple-access communication system 有权
标题翻译：准正交多址通信系统的信道结构
公开(公告)号：US08446892B2
公开(公告)日：2013-05-21
申请号：US11129140
申请日：2005-05-13
申请人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
发明人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
IPC分类号： H04W4/00 , H04W72/00 , H04B7/216 , H04B7/208 , H04B1/00 , H04J1/00
CPC分类号： H04J11/005 , H04B1/7143
摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.
摘要翻译：通道结构具有至少两个通道组。每个信道集合包含多个信道，并且将信道的特定映射与可用于数据传输的系统资源相关联。可以基于具有分层结构的信道树来定义每个信道集合。为了实现小区内干扰分集，每个信道集合的信道到资源映射相对于每个剩余信道集合的映射是伪随机的。在每个调度间隔中，终端被调度为在前向链路和/或反向链路上传输。调度终端从通道集分配通道。多个终端可以使用相同的系统资源，并且它们的重叠传输可以在空间域中分离。例如，可以执行波束成形以在前向链路上发送多个重叠传输，并且可以执行接收机空间处理以分离在反向链路上接收的多个重叠传输。

20. 发明授权

US08547951B2 Channel structures for a quasi-orthogonal multiple-access communication system 有权
公开(公告)号：US08547951B2
公开(公告)日：2013-10-01
申请号：US12791702
申请日：2010-06-01
申请人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
发明人： Tingfang Ji , Ayman Naguib , Arak Sutivong , Dhananjay Ashok Gore , Alexei Gorokhov
IPC分类号： H04W4/00 , H04W72/00 , H04B7/216 , H04B7/00 , H04B1/00 , H04J1/00
CPC分类号： H04J11/005 , H04B1/7143
摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.

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