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1. 发明申请

US20160227577A1 Pilot Assignment in Cell Free Massive MIMO Wireless Systems 有权
标题翻译：无线大规模MIMO无线系统中的导频分配
公开(公告)号：US20160227577A1
公开(公告)日：2016-08-04
申请号：US14610337
申请日：2015-01-30
申请人： Alexei Ashikhmin , Hien Quoc Ngo , Thomas L. Marzetta , Hong Yang
发明人： Alexei Ashikhmin , Hien Quoc Ngo , Thomas L. Marzetta , Hong Yang
IPC分类号： H04W74/00 , H04W72/12 , H04B7/04
CPC分类号： H04W74/008 , H04B7/0417 , H04B7/0452 , H04L5/0048 , H04L27/2613 , H04W72/1226
摘要： Systems and methods for assigning pilot sequences include randomly assigning pilot sequences to a population of access terminals. A first pilot sequence assigned to a worst performing access terminal of the population of access terminals is updated to a different pilot sequence that improves performance of the worst performing access terminal. A second pilot sequence assigned to a best performing access terminal of the population of access terminals is updated to another pilot sequence that reduces performance of the best performing access terminal.
摘要翻译：用于分配导频序列的系统和方法包括将导频序列随机分配给接入终端群体。分配给接入终端群体的最差执行接入终端的第一导频序列被更新为改进性能最差的接入终端的不同导频序列。分配给接入终端的最佳执行接入终端的第二导频序列被更新为另一个导频序列，从而降低性能最好的接入终端的性能。

2. 发明申请

US20130336232A1 System And Method Of Wireless Fixed Access Using A Multiple Antenna Array 有权
标题翻译：使用多个天线阵列的无线固定接入系统和方法
公开(公告)号：US20130336232A1
公开(公告)日：2013-12-19
申请号：US13547088
申请日：2012-07-12
申请人： Hong Yang , Thomas L. Marzetta , Alexei Ashikhmin
发明人： Hong Yang , Thomas L. Marzetta , Alexei Ashikhmin
IPC分类号： H04W72/04
CPC分类号： H04B7/0619 , H04B7/0632 , H04W52/143
摘要： A new method is disclosed for providing wireless fixed access from an array of service antennas to a population of local terminals. In implementations, a service transceiver station (STS) performs beamform precoding using channel state information (CSI) obtained from transmissions by the local terminals, and the STS performs power allocation using slow fading coefficients which are static over the service antenna positions and over a frequency range spanning at least some carriers used for downlink transmission.
摘要翻译：公开了一种用于从服务天线阵列到本地终端群的无线固定接入的新方法。在实现中，服务收发台（STS）使用从本地终端的传输获得的信道状态信息（CSI）来执行波束形预编码，并且STS使用在服务天线位置和频率上是静态的慢衰落系数来执行功率分配范围跨越至少一些用于下行链路传输的载波。

3. 发明授权

US09154208B2 System and method of wireless fixed access using a multiple antenna array 有权
标题翻译：使用多天线阵列的无线固定接入系统和方法
公开(公告)号：US09154208B2
公开(公告)日：2015-10-06
申请号：US13547088
申请日：2012-07-12
申请人： Hong Yang , Thomas L. Marzetta , Alexei Ashikhmin
发明人： Hong Yang , Thomas L. Marzetta , Alexei Ashikhmin
IPC分类号： H04W72/04 , H04B7/06 , H04W52/14
CPC分类号： H04B7/0619 , H04B7/0632 , H04W52/143
摘要： A new method is disclosed for providing wireless fixed access from an array of service antennas to a population of local terminals. In implementations, a service transceiver station (STS) performs beamform precoding using channel state information (CSI) obtained from transmissions by the local terminals, and the STS performs power allocation using slow fading coefficients which are static over the service antenna positions and over a frequency range spanning at least some carriers used for downlink transmission.
摘要翻译：公开了一种用于从服务天线阵列到本地终端群的无线固定接入的新方法。在实现中，服务收发台（STS）使用从本地终端的传输获得的信道状态信息（CSI）来执行波束形预编码，并且STS使用在服务天线位置和频率上是静态的慢衰落系数来执行功率分配范围跨越至少一些用于下行链路传输的载波。

4. 发明授权

US08774146B2 Large-scale antenna method and apparatus of wireless communication with suppression of intercell interference 有权
标题翻译：具有抑制小区间干扰的无线通信的大规模天线方法和装置
公开(公告)号：US08774146B2
公开(公告)日：2014-07-08
申请号：US13329834
申请日：2011-12-19
申请人： Alexei Ashikhmin , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Thomas L. Marzetta
IPC分类号： H04W92/00 , H04W52/24 , H04L5/00 , H04L27/26
CPC分类号： H04W52/243 , H04L5/005 , H04L25/03343 , H04L27/2675 , H04L2025/03426 , H04W52/24
摘要： Methods are provided for mitigating interference due to pilot contamination in a cellular network in which there is reuse of pilot signals. In embodiments, forward-link signals are precoded, using knowledge of slow-fading coefficients, to mitigate the interference. In embodiments, interference in reverse-link signals destined for a given base station is mitigated by linearly combining reverse-link signals destined for the given base station and for other base stations of the network, using knowledge of slow-fading coefficients.
摘要翻译：提供了用于减轻由于导频信号重用的蜂窝网络中的导频污染引起的干扰的方法。在实施例中，使用慢衰落系数的知识来预编码前向链路信号以减轻干扰。在实施例中，使用慢衰落系数的知识，通过线性组合去往给定基站的反向链路信号和网络的其他基站来减轻去往给定基站的反向链路信号的干扰。

5. 发明授权

US08594215B2 MIMO system having a plurality of service antennas for data transmission thereof 有权
标题翻译： MIMO系统具有用于数据发送和接收的多个业务天线及其方法
公开(公告)号：US08594215B2
公开(公告)日：2013-11-26
申请号：US13155733
申请日：2011-06-08
申请人： Thomas L. Marzetta , Alexei Ashikhmin
发明人： Thomas L. Marzetta , Alexei Ashikhmin
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/03343 , H04B7/0452 , H04L5/0023 , H04L25/0204 , H04L25/0224 , H04L2025/03426
摘要： Embodiments provide a MIMO system having a plurality of service antennas and method for data transmission and reception. The system includes a plurality of service antennas, where each service antenna is configured to simultaneously serve a plurality of terminals and independently receive a pilot sequence from the plurality of terminals. The system further includes a plurality of channel estimation units configured to independently generate an antenna-specific channel estimate based on the received pilot sequence and a plurality of pre-coding units configured to independently generate a coded signal to be transmitted to the plurality of terminals via a respective service antenna based on a set of data symbols and the antenna-specific channel estimate.
摘要翻译：实施例提供具有多个服务天线的MIMO系统和用于数据发送和接收的方法。该系统包括多个服务天线，其中每个服务天线被配置为同时服务多个终端并且独立地从多个终端接收导频序列。该系统还包括：多个信道估计单元，被配置为基于接收到的导频序列独立地生成天线专用信道估计;以及多个预编码单元，被配置为独立地生成待发送到多个终端的编码信号，经由基于一组数据符号和天线特定信道估计的相应服务天线。

6. 发明授权

US08054925B2 Method and apparatus for synchronizing a receiver 有权
标题翻译：用于同步接收机的方法和装置
公开(公告)号：US08054925B2
公开(公告)日：2011-11-08
申请号：US12141305
申请日：2008-06-18
申请人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
IPC分类号： H04L7/00 , H03L7/00
CPC分类号： H04L27/2662 , H04L27/2607 , H04L27/2666 , H04L27/2678
摘要： Various embodiments generally relate to a method for synchronizing a receiver, said method including receiving a stream that includes a cyclic extension, estimating a size of the cyclic extension, extracting an amount of the stream according to the estimated size, and comparing the extracted amount to the stream to determine thereby a portion of the stream likely to include a symbol start point.
摘要翻译：各种实施例通常涉及用于同步接收机的方法，所述方法包括接收包括循环扩展的流，估计循环扩展的大小，根据估计大小提取流量，并将提取的量与该流由此确定流的一部分可能包括符号起始点。

7. 发明申请

US20110182279A1 Interference Reduction For Wireless Networks 失效
标题翻译：无线网络的干扰减少
公开(公告)号：US20110182279A1
公开(公告)日：2011-07-28
申请号：US12695864
申请日：2010-01-28
申请人： Alexei Ashikhmin , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Thomas L. Marzetta
IPC分类号： H04J3/06
CPC分类号： H04L25/0226 , H04B2201/70701 , H04J11/005 , H04L25/0204 , H04L25/03343 , H04L2025/03808
摘要： Embodiments are described to mitigate network interference issues and to enable a significant increase in the throughput of wireless systems. In one method, pilot transmissions of a first and second group of wireless units are synchronized. Each wireless unit of the first group and each wireless unit of the second group use a different orthogonal pilot (than others in their group) from the same group of orthogonal pilots. Also, the pilot transmissions of the second group of wireless units are synchronized so as to be shifted in time from the pilot transmissions of the first group. In another method, data from neighboring cells and pilots from wireless units are received at a cell. Channel vectors for the wireless units are then estimated using the received data from neighboring cells, the received pilots from the wireless units and previously estimated channel vectors between the cell and the neighboring cells.
摘要翻译：描述了实施例以减轻网络干扰问题并且能够显着提高无线系统的吞吐量。在一种方法中，第一和第二组无线单元的导频传输被同步。第一组的每个无线单元和第二组的每个无线单元使用来自同一组正交导频的不同的正交导频（在其组中比其他组）。此外，第二组无线单元的导频传输被同步，以便在第一组的导频传输中从时间上移位。在另一种方法中，来自相邻小区的数据和来自无线单元的导频在小区被接收。然后使用来自相邻小区的接收数据，来自无线单元的接收到的导频以及小区和相邻小区之间的先前估计的信道向量来估计用于无线单元的信道向量。

8. 发明申请

US20090034668A1 METHOD AND APPARATUS FOR SYNCHRONIZING A RECEIVER 有权
标题翻译：用于同步接收器的方法和装置
公开(公告)号：US20090034668A1
公开(公告)日：2009-02-05
申请号：US12141305
申请日：2008-06-18
申请人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
IPC分类号： H04L7/00 , H04L27/28
CPC分类号： H04L27/2662 , H04L27/2607 , H04L27/2666 , H04L27/2678
摘要： Various embodiments generally relate to a method for synchronizing a receiver, said method including receiving a stream that includes a cyclic extension, estimating a size of the cyclic extension, extracting an amount of the stream according to the estimated size, and comparing the extracted amount to the stream to determine thereby a portion of the stream likely to include a symbol start point.
摘要翻译：各种实施例通常涉及用于同步接收机的方法，所述方法包括接收包括循环扩展的流，估计循环扩展的大小，根据估计大小提取流量，并将提取的量与该流由此确定流的一部分可能包括符号起始点。

9. 发明授权

US09072058B2 Method and apparatus for power optimization in wireless systems with large antenna arrays 有权
标题翻译：用于具有大天线阵列的无线系统中的功率优化的方法和装置
公开(公告)号：US09072058B2
公开(公告)日：2015-06-30
申请号：US13402204
申请日：2012-02-22
申请人： Alexei Ashikhmin , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Thomas L. Marzetta
IPC分类号： H04W52/24 , H04W52/42 , H04B7/06
CPC分类号： H04W52/241 , H04B7/0626 , H04W52/42
摘要： A method and apparatus for communication between a wireless base station and a population of one or more terminals are provided, involving, in each of a plurality of iterations, transmitting a block of forward-link data from an array of multiple base station antennas to the terminal population. In each iteration, a forward-link power level is updated for each said terminal using a distributed algorithm and purely local information. Meanwhile, a set of beamforming coefficients based on channel state information (CSI) obtained from reverse-link pilot signals is periodically updated, and each data block is precoded with the most recently updated beamforming coefficients. Each data block is transmitted at the most recently updated forward-link power levels.
摘要翻译：提供了一种用于无线基站与一个或多个终端的群体之间的通信的方法和装置，其涉及在多个迭代中的每一个中，将来自多个基站天线的阵列的前向链路数据块发送到终端人口。在每次迭代中，使用分布式算法和纯粹的本地信息为每个所述终端更新前向链路功率级。同时，周期性地更新基于从反向链路导频信号获得的信道状态信息（CSI）的一组波束成形系数，并且利用最近更新的波束成形系数对每个数据块进行预编码。每个数据块以最新更新的前向链路功率电平发送。

10. 发明申请

US20130315111A1 Method And Apparatus Of Wireless Communication Using Directional Antennas 有权
标题翻译：使用定向天线的无线通信方法与装置
公开(公告)号：US20130315111A1
公开(公告)日：2013-11-28
申请号：US13477579
申请日：2012-05-22
申请人： Alexei Ashikhmin , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Thomas L. Marzetta
IPC分类号： H04W72/04 , H04J3/00
CPC分类号： H04W16/14
摘要： A method is provided, in which a base station allocates pilot signals to mobile terminals in a cell, obtains CSI from uplink pilot signals transmitted by mobile terminals, uses the CSI to precode messages, and transmits the messages in conformance with a TDD protocol. The CSI is obtained by comparing the pilot signal received from each mobile terminal to a known pilot signal associated with that mobile terminal. The known pilot signals are associated with respective mobile terminals according to a pilot signal reuse pattern in which adjacent cells are allocated mutually orthogonal reuse groups of mutually orthogonal pilot signals, and mobile terminals within a given cell are limited to transmitting only pilot signals allocated to that cell.
摘要翻译：提供了一种方法，其中基站向小区中的移动终端分配导频信号，从由移动终端发送的上行导频信号中获取CSI，使用CSI对消息进行预编码，并根据TDD协议发送消息。通过将从每个移动终端接收的导频信号与与该移动终端相关联的已知导频信号进行比较来获得CSI。已知的导频信号根据导频信号重用模式与相应的移动终端相关联，其中相邻小区被分配相互正交的导频信号的相互正交的重用组，并且给定小区内的移动终端被限制为仅传送分配给该小区的导频信号细胞。

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