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1. 发明授权

US06917820B2 Method and apparatus for selection and use of optimal antennas in wireless systems 有权
标题翻译：在无线系统中选择和使用最佳天线的方法和装置
公开(公告)号：US06917820B2
公开(公告)日：2005-07-12
申请号：US09769445
申请日：2001-01-26
申请人： Dhananjay A. Gore , Rohit U. Nabar , Arogyaswami Paulraj , Sumeet Sandhu
发明人： Dhananjay A. Gore , Rohit U. Nabar , Arogyaswami Paulraj , Sumeet Sandhu
IPC分类号： H04B7/06 , H04B7/08 , H04B1/38
CPC分类号： H04B7/0874 , H04B7/061 , H04B7/0639 , H04B7/0673 , H04B7/0691
摘要： A method and apparatus for selecting an optimal set of antennas from a plurality of antennas for use by a transmitter and/or receiver having a plurality of RF chains to transmit and/or receive a wireless signal on a wireless link. According to the invention information concerning transmission of wireless signals on the wireless link is determined and an optimal set of antennas from the plurality of antennas is selected based on the information. Thereafter, the RF chains are connected to the optimal set of antennas to permit transmission and/or reception of the wireless signal from the RF chains on the wireless link via the optimal set of antennas. The RF chains correspond in number to the number of antennas in the optimal set of antennas, and the number of antennas included in the plurality of antennas is greater than the number of RF chains.
摘要翻译：一种用于从多个天线中选择由具有多个RF链发射和/或接收无线信号上的无线信号的发射机和/或接收机使用的最佳天线组的方法和装置。根据本发明，确定关于无线链路上的无线信号的传输的信息，并且基于该信息选择来自多个天线的最佳天线组。此后，RF链连接到最佳的天线集合，以允许经由最佳天线组从无线链路上的RF链发射和/或接收无线信号。 RF链的数量与最佳天线集合中的天线数量相对应，并且包括在多个天线中的天线的数量大于RF链的数量。

2. 发明授权

US06438389B1 Wireless communication system with adaptive beam selection 有权
标题翻译：具有自适应波束选择的无线通信系统
公开(公告)号：US06438389B1
公开(公告)日：2002-08-20
申请号：US09360130
申请日：1999-07-23
申请人： Sumeet Sandhu , Arogyaswami Paulraj
发明人： Sumeet Sandhu , Arogyaswami Paulraj
IPC分类号： H04B138
CPC分类号： H04B7/088 , H01Q3/24 , H01Q3/2605 , H04B7/0408 , H04B7/0814 , H04B7/086
摘要： A wireless communication system has several antennas that are electronically controlled to form N distinct beams (e.g., directional or sectored beams). Each one of the N beams is periodically measured for signal quality for each mobile subscriber. Signal quality measurement can be based on many known techniques. A computer stores and compares the signal quality measurements. The two (or more) best beams are selected using switches controlled by the computer. The best beams are frequency downconverted, digitized and sent to a combiner which combines the best beams to produce a signal having exceptional quality. The computer compares the signal quality measurements and intermittently updates the switch settings for each subscriber so that the best beams are always used for each subscriber. Optionally, three or more of the best beams are combined in the signal combiner. Also, the identified best beam is typically the best for transmission as well, so the invention includes embodiments where beams are transmitted using only the best beam, or best two or more beams. In a preferred embodiment, the set of beams used has a single omnidirectional beam, and several highly directional beams.
摘要翻译：无线通信系统具有电子控制以形成N个不同波束（例如，方向或扇形波束）的几个天线。为每个移动用户的信号质量周期性地测量N个波束中的每一个。信号质量测量可以基于许多已知技术。计算机存储和比较信号质量测量。使用由计算机控制的开关来选择两个（或更多）最佳光束。最好的光束被下变频，数字化并发送到组合器，其组合最佳光束以产生具有优异质量的信号。计算机比较信号质量测量并间歇地更新每个用户的开关设置，以便每个用户始终使用最佳波束。可选地，在信号组合器中组合三个或更多个最佳光束。此外，所识别的最佳波束通常也是用于传输的最佳波束，因此本发明包括仅使用最佳波束或最佳两个或更多波束发射波束的实施例。在优选实施例中，所使用的一组光束具有单个全向光束和若干高度定向的光束。

3. 发明授权

US08396147B2 MIMO transmitter for transmitting a group of sequential OFDM symbols using a plurality of antennas 有权
标题翻译： MIMO发射机，用于使用多个天线发送一组顺序OFDM符号
公开(公告)号：US08396147B2
公开(公告)日：2013-03-12
申请号：US12757117
申请日：2010-04-09
申请人： John S. Sadowsky , Minnie Ho , Eric A. Jacobsen , Alexander A. Maltsev , Ali S. Sadri , Sumeet Sandhu
发明人： John S. Sadowsky , Minnie Ho , Eric A. Jacobsen , Alexander A. Maltsev , Ali S. Sadri , Sumeet Sandhu
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04W16/28 , H04B7/0408 , H04L27/2602 , H04W74/02
摘要： A MIMO transmitter and method for transmitting a group of sequential OFDM symbols on a downlink channel using a plurality of antennas is disclosed herein. Groups of OFDM subcarriers are individually modulated in accordance with spatial-frequency subcarrier modulation assignments to generate groups of symbol-modulated subcarriers, corresponding symbol-modulated subcarriers are combined for transmission on each of a plurality of spatial channels, and beamforming is performed on the combined symbol-modulated subcarriers for transmission over the spatial channels. The channel comprises a plurality of the groups of the OFDM subcarriers and the OFDM subcarriers within each group of subcarriers and within each group of sequential OFDM symbols have the same spatial-frequency subcarrier modulation assignments. The spatial-frequency subcarrier modulation assignments for each group are determined based on feedback by a receiver, which is determined from spatial channel characteristics of the spatial channels.
摘要翻译：这里公开了一种用于使用多个天线在下行链路信道上发送一组顺序OFDM符号的MIMO发射器和方法。根据空间 - 频率副载波调制分配对OFDM子载波组进行单独调制，以生成符号调制子载波组，将多个空间信道中的每一个组合对应的符号调制副载波进行传输，并对组合用于在空间信道上传输的符号调制副载波。信道包括多个OFDM子载波组和每个子载波组内的OFDM子载波，并且在每组顺序OFDM符号内具有相同的空间频率副载波调制分配。基于由空间信道的空间信道特性确定的接收机的反馈来确定每个组的空间频率副载波调制分配。

4. 发明授权

US08194777B2 Apparatus and associated methods to perform space-frequency interleaving in a multicarrier wireless communication channel 有权
公开(公告)号：US08194777B2
公开(公告)日：2012-06-05
申请号：US12836929
申请日：2010-07-15
申请人： Sumeet Sandhu
发明人： Sumeet Sandhu
IPC分类号： H04L1/02
CPC分类号： H04L27/2602 , H04L1/0068 , H04L1/0071 , H04L5/0023 , H04L5/0046 , H04L25/0216 , H04L27/3416
摘要： An apparatus and associated methods for performing space-frequency interleaving in a multicarrier wireless communication system is generally described.

5. 发明授权

US08126077B2 MIMO transmitter and methods for transmitting OFDM symbols with cyclic-delay diversity 有权
标题翻译： MIMO发射机和用于发送具有循环延迟分集的OFDM符号的方法
公开(公告)号：US08126077B2
公开(公告)日：2012-02-28
申请号：US12643035
申请日：2009-12-21
申请人： Sumeet Sandhu
发明人： Sumeet Sandhu
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L1/0071 , H04L1/0618 , H04L5/0023 , H04L25/0216 , H04L27/2602 , H04L27/2607 , H04L27/2626 , H04L27/36
摘要： A multiple-input multiple output (MIMO) transmitter and methods for transmitting orthogonal frequency division multiplexed (OFDM) symbols with cyclic-delay diversity (CDD) are generally described herein. In some embodiments, a base station uses a number of antennas for MIMO transmission of OFDM symbols. For the number of antennas, quadrature-amplitude modulated (QAM) symbols are distributed across a group of OFDM tones of a block comprising the group of tones and a group of OFDM symbols. An incremented cyclic delay is applied to the QAM symbols of the block associated with each subsequent of the antennas for CDD transmission. Each blocks is transmitted by an associated one of the antennas.
摘要翻译：多输入多输出（MIMO）发射机和用于发送具有循环延迟分集（CDD）的正交频分复用（OFDM）符号的方法）。在一些实施例中，基站使用多个天线进行OFDM符号的MIMO传输。对于天线数量，正交幅度调制（QAM）符号分布在包括音调组和一组OFDM符号的块的一组OFDM音调上。对与用于CDD传输的每个后续天线相关联的块的QAM符号应用递增的循环延迟。每个块由相关联的一个天线发送。

6. 发明授权

US08077802B2 Device, system, and method of resource allocation in a wireless network 有权
标题翻译：无线网络资源分配的设备，系统和方法
公开(公告)号：US08077802B2
公开(公告)日：2011-12-13
申请号：US12049766
申请日：2008-03-17
申请人： Sumeet Sandhu , Feng Xue
发明人： Sumeet Sandhu , Feng Xue
IPC分类号： H04L27/04 , H04L23/00 , H04B1/00 , H04W72/04 , H04J3/16
CPC分类号： H04L5/0037 , H04L5/0023 , H04L5/006 , H04W72/0453 , H04W72/082 , Y02D70/1224 , Y02D70/124 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164 , Y02D70/166
摘要： Device, system, and method of resource allocation in a wireless network. Embodiments include optimal space-frequency architectures for very high peak rates in wireless systems. For example, an apparatus for wireless communication in a power-limited, very wideband system includes a wireless communication device having a media access controller (MAC) and a physical layer (PHY) that are adapted for a multiple-input-multiple-output (MIMO) orthogonal frequency-division multiple access (OFDMA) communication scheme; a plurality of antennas, operationally coupled to said device, to send and receive wireless communication signals according to the MIMO-OFDMA communication scheme; and a resource allocator, to allocate transmission resources of the device into desired MIMO channels optimized according to at least one of signal-to-noise ratio (SNR), bandwidth, number of users, and signal-to-noise-plus-interference ratio (SINR).
摘要翻译：无线网络资源分配的设备，系统和方法。实施例包括用于无线系统中极高峰值速率的最佳空频架构。例如，在功率受限的非常宽带系统中的用于无线通信的装置包括具有媒体接入控制器（MAC）和物理层（PHY）的无线通信设备，该物理层适用于多输入多输出（ MIMO）正交频分多址（OFDMA）通信方案; 多个天线，可操作地耦合到所述设备，以根据MIMO-OFDMA通信方案发送和接收无线通信信号; 以及资源分配器，用于将所述设备的传输资源分配到根据信噪比（SNR），带宽，用户数量以及信噪比加干扰比中的至少一个优化的期望MIMO信道中（SINR）。

7. 发明授权

US08060033B2 Techniques to enhance diversity for a wireless system 有权
标题翻译：提高无线系统多样性的技术
公开(公告)号：US08060033B2
公开(公告)日：2011-11-15
申请号：US12454726
申请日：2009-05-20
申请人： Nageen Himayat , Sumeet Sandhu
发明人： Nageen Himayat , Sumeet Sandhu
IPC分类号： H04B7/02 , H04K1/00 , H04L1/02
CPC分类号： H04B7/0669 , H04B7/068 , H04L1/0041 , H04L1/0071 , H04L1/0606 , H04L27/2601
摘要： A system, apparatus, method and article to manage diversity for a wireless multicarrier communication system are described. An apparatus may include a diversity agent to couple to a transmitter, the diversity agent to convert a determined number of input bits into symbols, interleave the symbols across multiple spatial streams, and map the symbols to tones for each spatial stream. Other embodiments are described and claimed.
摘要翻译：描述了一种用于管理无线多载波通信系统的分集的系统，装置，方法和文章。设备可以包括分组代理以耦合到发射机，分集代理将确定数量的输入比特转换为符号，在多个空间流之间交织符号，并将符号映射到每个空间流的音调。描述和要求保护其他实施例。

8. 发明授权

US07782970B2 Apparatus and associated methods to introduce diversity in a multicarrier communication channel 失效
标题翻译：在多载波通信信道中引入分集的装置和相关方法
公开(公告)号：US07782970B2
公开(公告)日：2010-08-24
申请号：US10789387
申请日：2004-02-26
申请人： Lei Shao , Sumit Roy , Sumeet Sandhu
发明人： Lei Shao , Sumit Roy , Sumeet Sandhu
IPC分类号： H04B7/02
CPC分类号： H04L1/0631 , H04L1/0606 , H04L1/0637
摘要： An apparatus and associated methods to improve diversity gain while preserving channel throughput in a multicarrier communication channel are generally presented.
摘要翻译：通常呈现了一种在多载波通信信道中保持信道吞吐量的同时提高分集增益的装置和相关方法。

9. 发明授权

US07760678B2 Cooperative transmission apparatus, systems, and methods 失效
标题翻译：协同传输装置，系统和方法
公开(公告)号：US07760678B2
公开(公告)日：2010-07-20
申请号：US11563386
申请日：2006-11-27
申请人： Sumeet Sandhu , Ozgur Oyman , Timothy F. Cox
发明人： Sumeet Sandhu , Ozgur Oyman , Timothy F. Cox
IPC分类号： H04B7/14 , H04B3/36 , H04J1/10 , H04J3/08 , H04J3/14
CPC分类号： H04L25/14 , H04B7/15521 , H04B7/15592 , H04L1/0013 , H04L2001/0097
摘要： Embodiments herein may operate at a cooperating relay station (CRS) in a wireless packet-carrying network (WPCN). A source-to-CRS (SC) link quality of an SC wireless channel may be estimated using signal quality information derived from a packet transmitted by a source station and received by the CRS. A CRS-to-destination (CD) link quality of a CD wireless channel may also be estimated using signal quality information derived from a packet transmitted by a destination station and received by the CRS. A source-to-destination (SD) link quality parameter representing SD link quality may be extracted by the CRS from the packet transmitted by the destination station. The CRS may decide whether to participate with the source station or with another CRS in transmitting an SD packet based upon the SC link quality, the CD link quality, the SD link quality, or a combination thereof. Other embodiments may be described and claimed.
摘要翻译：本文的实施例可以在无线分组承载网络（WPCN）中的协作中继站（CRS）处操作。可以使用从源站发送并由CRS接收的分组导出的信号质量信息来估计SC无线信道的源到CRS（SC）链路质量。也可以使用从由目的地站发送并由CRS接收的分组导出的信号质量信息来估计CD无线信道的CRS到目的地（CD）链路质量。表示SD链路质量的源到目的地（SD）链路质量参数可以由目的站发送的分组由CRS提取。 CRS可以基于SC链路质量，CD链路质量，SD链路质量或其组合来决定是否与源站或另一个CRS一起发送SD分组。可以描述和要求保护其他实施例。

10. 发明申请

US20090245159A1 System and method for node-clustering and multi-hop routing in wideband wireless ad-hoc networks 有权
标题翻译：宽带无线自组织网络中节点聚类和多跳路由的系统和方法
公开(公告)号：US20090245159A1
公开(公告)日：2009-10-01
申请号：US12059682
申请日：2008-03-31
申请人： Ozgur Oyman , Sumeet Sandhu
发明人： Ozgur Oyman , Sumeet Sandhu
IPC分类号： H04B7/14
CPC分类号： H04B7/2606 , H04L45/122 , H04W4/08 , H04W28/22 , H04W40/08 , H04W40/32 , H04W84/18 , H04W88/04 , Y02D70/1242 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22 , Y02D70/324 , Y02D70/449
摘要： An ad-hoc network system for computing a proposed number of node-clusters that enable a relative threshold data rate. The ad-hoc network system includes a source terminal, a destination terminal, a plurality of relay terminals, and a cluster determination engine. The source terminal sends a network communication to a destination terminal via a plurality of relay terminals. The cluster determination engine computes a threshold data rate, C, for a number of hops, N, based on a transmission power constraint. The cluster determination engine determines a proposed route for the wireless communication from the source terminal to the destination terminal according to the threshold data rate, C.
摘要翻译：一种用于计算提出数量的能够实现相对阈值数据速率的节点簇的自组织网络系统。自组织网络系统包括源终端，目的终端，多个中继终端和群集确定引擎。源终端经由多个中继终端向目的地终端发送网络通信。集群确定引擎基于传输功率约束计算针对跳数N的阈值数据速率C。集群确定引擎根据阈值数据速率来确定用于从源终端到目的终端的无线通信的建议路由。

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