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1. 发明授权

US08462867B2 Near soft-output maximum-likelihood detection for multiple-input multiple-output systems 有权
标题翻译：多输入多输出系统的近似软输出最大似然检测
公开(公告)号：US08462867B2
公开(公告)日：2013-06-11
申请号：US11849025
申请日：2007-08-31
申请人： Albert van Zelst , Brian Wong , D. J. Richard van Nee , Vincent K. Jones, IV , Geert Arnout Awater
发明人： Albert van Zelst , Brian Wong , D. J. Richard van Nee , Vincent K. Jones, IV , Geert Arnout Awater
IPC分类号： H04L5/12
CPC分类号： H04L25/0204 , H04L1/0048 , H04L1/06 , H04L25/0242 , H04L25/0246 , H04L25/067 , H04L27/2601
摘要： Systems and methodologies are described that provide low-complexity soft-output detection for MIMO communication systems. Looping can be performed over a set of constellation points per spatial stream to obtain distance metrics for each of a series of transmitted streams, for which values for the other transmitted streams can be estimated using a MIMO channel matrix and a sub-optimal MIMO algorithm. Examples of MIMO algorithms that can be utilized include Per-Stream List Detection (PSLD), Lattice-Reduced Detection (LRD), and a Guided-M Algorithm. Performance can be further improved by pre-processing the MIMO channel matrix and/or by utilizing techniques for Enhanced Metric Usage (EMU).
摘要翻译：描述了为MIMO通信系统提供低复杂度软输出检测的系统和方法。可以在每个空间流的一组星座点上执行循环，以获得一系列发射流中的每一个的距离度量，对于其可以使用MIMO信道矩阵和次优MIMO算法来估计其他发送流的值。可以使用的MIMO算法的示例包括每流列表检测（PSLD），格子减少检测（LRD）和引导M算法。通过预处理MIMO信道矩阵和/或通过利用用于增强度量使用（EMU）的技术，可以进一步改善性能。

2. 发明授权

US07599333B2 Wireless messaging preambles allowing for beamforming and legacy device coexistence 有权
标题翻译：无线传输前导码允许波束成形和传统设备共存
公开(公告)号：US07599333B2
公开(公告)日：2009-10-06
申请号：US11351279
申请日：2006-02-08
申请人： Vincent K. Jones , D. J. Richard van Nee , Albert van Zelst
发明人： Vincent K. Jones , D. J. Richard van Nee , Albert van Zelst
IPC分类号： H04W4/00
CPC分类号： H04W28/18 , H04L7/041 , H04W16/28 , H04W28/06 , H04W80/00 , H04W99/00
摘要： A modified preamble is used by extended devices that operate in mixed mode environments and green field environments, to accommodate beamforming of transmissions. In one process, an extended wireless device processes data for transmission of that data as a packet, wherein the extended wireless device is a device configured to communicate using a standard protocol understood by each node device and an extended protocol not understood by legacy node devices. If the packet is to be directed at an extended device, the extended wireless device sends a preamble of that packet that is usable in an extended mode at extended devices and usable at a receiving legacy device to determine that the receiving legacy device is not the destination of data to follow the preamble. Once the receiving legacy device is expected to be deferring the network, the extended wireless device can beamform its signal or otherwise vary from the legacy protocol in communications with extended devices.
摘要翻译：经修改的前导码由在混合模式环境和绿色环境中工作的扩展设备使用，以适应传输的波束成形。在一个过程中，扩展无线设备处理用于作为分组传输该数据的数据，其中扩展无线设备是被配置为使用每个节点设备理解的标准协议和传统节点设备不理解的扩展协议进行通信的设备。如果分组被引导到扩展设备，则扩展无线设备在扩展设备处以扩展模式可用的分组的前导码发送并在接收传统设备上可用以确定接收传统设备不是目的地的数据遵循序言。一旦接收传统设备被期望延迟网络，则扩展无线设备可以在与扩展设备的通信中波束形成其信号或者与传统协议不同。

3. 发明授权

US08743837B2 Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices 有权
标题翻译：用于IEEE 802.11A扩展的修改的前导码结构，以允许802.11A设备和较高数据速率，MIMO或其他扩展设备之间的共存和互操作性
公开(公告)号：US08743837B2
公开(公告)日：2014-06-03
申请号：US12552705
申请日：2009-09-02
申请人： Albert van Zelst , D. J. Richard van Nee , Vincent K. Jones
发明人： Albert van Zelst , D. J. Richard van Nee , Vincent K. Jones
IPC分类号： H04Q7/00
CPC分类号： H04L27/2613 , H04B7/04 , H04L5/0023 , H04L5/1438 , H04L25/0226 , H04L25/03248 , H04W24/00 , H04W84/12 , H04W88/06 , H04W99/00
摘要： A modified preamble is used by extended devices that operate at higher rates, MIMO or other extensions relative to strict 802.11a-compliant devices. The extended devices might use multiple antenna techniques (MIMO), where multiple data streams are multiplexed spatially and/or multi-channel techniques, where an extended transmitter transmits using more than one 802.11a channel at a time. Such extensions to IEEE 802.11a can exist in extended devices. The modified preamble is usable for signaling, to legacy devices as well as extended devices, to indicate capabilities and to cause legacy devices or extended devices to defer to other devices such that the common communication channel is not subject to unnecessary interference. The modified preamble is also usable for obtaining MIMO channel estimates and/or multi-channel estimates. The modified preamble preferably includes properties that facilitate detection of conventional and/or extended modes (“mode detection”) and provides some level of coexistence with legacy IEEE 802.11a devices.
摘要翻译：经修改的前同步码由相对于严格的符合802.11a标准的设备的较高速率，MIMO或其他扩展操作的扩展设备使用。扩展设备可能使用多个天线技术（MIMO），其中多个数据流在空间和/或多信道技术上复用，其中扩展发射机一次使用多于一个802.11a信道进行发射。 IEEE 802.11a的这种扩展可以存在于扩展设备中。经修改的前导码可用于对传统设备以及扩展设备进行信令，以指示能力并使遗留设备或扩展设备推迟到其他设备，使得公共通信信道不受不必要的干扰。经修改的前导码也可用于获得MIMO信道估计和/或多信道估计。修改的前导码优选地包括便于检测常规和/或扩展模式（“模式检测”）并且提供与传统IEEE 802.11a设备的一些级别共存的属性。

4. 发明授权

US07599332B2 Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices 有权
标题翻译：用于IEEE 802.11a扩展的修改的前导码结构，以允许802.11a设备和更高数据速率，MIMO或其他扩展设备之间的共存和互操作性
公开(公告)号：US07599332B2
公开(公告)日：2009-10-06
申请号：US11140349
申请日：2005-05-27
申请人： Albert van Zelst , Vincent K. Jones , D. J. Richard van Nee
发明人： Albert van Zelst , Vincent K. Jones , D. J. Richard van Nee
IPC分类号： H04Q7/00
CPC分类号： H04L27/261 , H04B7/0671 , H04L1/06 , H04L1/0618 , H04L25/0212 , H04L25/0226 , H04L27/2613 , H04W16/14 , H04W24/00 , H04W84/12 , H04W88/06 , H04W99/00
摘要： A modified preamble is used by extended devices that operate at higher rates, MIMO or other extensions relative to strict 802.11a-compliant devices. The extended devices might use multiple antenna techniques (MIMO), where multiple data streams are multiplexed spatially and/or multi-channel techniques, where an extended transmitter transmits using more than one 802.11a channel at a time. Such extensions to IEEE 802.11a can exist in extended devices. The modified preamble is usable for signaling, to legacy devices as well as extended devices, to indicate capabilities and to cause legacy devices or extended devices to defer to other devices such that the common communication channel is not subject to unnecessary interference. The modified preamble is also usable for obtaining MIMO channel estimates and/or multi-channel estimates. The modified preamble preferably includes properties that facilitate detection of conventional and/or extended modes (“mode detection”) and provides some level of coexistence with legacy IEEE 802.11a devices.
摘要翻译：经修改的前同步码由相对于严格的符合802.11a标准的设备的较高速率，MIMO或其他扩展操作的扩展设备使用。扩展设备可能使用多个天线技术（MIMO），其中多个数据流在空间和/或多信道技术上复用，其中扩展发射机一次使用多于一个802.11a信道进行发射。 IEEE 802.11a的这种扩展可以存在于扩展设备中。经修改的前导码可用于对传统设备以及扩展设备进行信令，以指示能力并使遗留设备或扩展设备推迟到其他设备，使得公共通信信道不受不必要的干扰。经修改的前导码也可用于获得MIMO信道估计和/或多信道估计。修改的前导码优选地包括便于检测常规和/或扩展模式（“模式检测”）并且提供与传统IEEE 802.11a设备的一些级别共存的属性。

5. 发明授权

US07539260B2 Detecting the number of transmit antennas in wireless communication systems 有权
标题翻译：检测无线通信系统中发射天线的数量
公开(公告)号：US07539260B2
公开(公告)日：2009-05-26
申请号：US11139925
申请日：2005-05-27
申请人： Albert van Zelst , Vincent K. Jones , D. J. Richard van Nee
发明人： Albert van Zelst , Vincent K. Jones , D. J. Richard van Nee
IPC分类号： H04B7/02 , H04L1/02 , H04L27/00 , H04K1/10 , H04L27/28
CPC分类号： H04L27/261 , H04B7/0671 , H04L1/06 , H04L1/0618 , H04L25/0212 , H04L25/0226 , H04L27/2613 , H04W16/14 , H04W24/00 , H04W84/12 , H04W88/06 , H04W99/00
摘要： To detect the number of transmit antennas, a fast Fourier transform operation is performed on the received samples of the transmitted long training symbols of a preamble. Next, each of the Fourier transformed results is multiplied with the reference frequency-domain representation of the long training symbol so as to remove the effect of the symbols and to maintain the channel information. Next, inverse Fourier transform or least squares operations is performed on the multiplied values to compute channel impulse response. The number of shifted impulse response in the channel impulse response represents the detected number of transmit antennas. Packets containing preambles of the present invention may be received by extended devices as well as by legacy receivers that are not configured to receive and interpret these preambles. The training symbols may be cyclically-shifted and transmitted on different transmit antennas.
摘要翻译：为了检测发送天线的数量，对前导码的发送的长训练符号的接收样本执行快速傅里叶变换操作。接下来，将每个傅立叶变换结果乘以长训练符号的参考频域表示，以便消除符号的影响并维持频道信息。接下来，对乘法值执行逆傅里叶变换或最小二乘法运算以计算信道脉冲响应。信道脉冲响应中移位脉冲响应的数量表示检测到的发射天线数。包含本发明的前导码的分组可以由扩展设备以及未被配置为接收和解释这些前同步码的传统接收机接收。训练符号可以循环移位并在不同的发射天线上发射。

6. 发明授权

US08948198B2 Advanced wireless packet transmission scheme with enhancements to accommodate basic wireless packet transmission scheme 有权
标题翻译：先进的无线分组传输方案具有增强功能，适应基本的无线分组传输方案
公开(公告)号：US08948198B2
公开(公告)日：2015-02-03
申请号：US11681531
申请日：2007-03-02
申请人： D. J. Richard van Nee , Vincent K. Jones
发明人： D. J. Richard van Nee , Vincent K. Jones
IPC分类号： H04J3/16 , H04W4/00 , H04W16/12 , H04W72/04 , H04W72/06 , H04W72/08 , H04W84/18 , H04W88/02 , H04W92/02
CPC分类号： H04W16/12 , H04W72/0406 , H04W72/06 , H04W72/085 , H04W84/18 , H04W88/02 , H04W92/02
摘要： Methods and systems for signaling on a mixed-mode wireless network comprising a plurality of channels are provided. The mixed-mode wireless network includes high-throughput (HT) wireless devices and legacy wireless devices that use channels of the same width. The HT devices transmit data on at least two channels, while the legacy devices transmit on one channel. The distances between the HT channels and the distances between the legacy channels might differ, however, the channels used by the HT devices and the legacy devices may overlap. As a result, cooperation between the HT devices and legacy devices is provided to enable the devices to coexist on the same wireless network by minimizing collisions and interference. The HT devices are configured to send control information to the legacy devices to coordinate transmission by the HT devices with the legacy devices.
摘要翻译：提供了在包括多个通道的混合模式无线网络上进行信令的方法和系统。混合模式无线网络包括高吞吐量（HT）无线设备和使用相同宽度的信道的传统无线设备。 HT设备在至少两个通道上传输数据，而传统设备在一个通道上传输数据。 HT信道之间的距离和传统信道之间的距离可能不同，但HT设备和传统设备使用的信道可能会重叠。结果，提供HT设备和传统设备之间的协作，以使设备能够通过最小化冲突和干扰来在同一无线网络上共存。 HT设备被配置为向旧设备发送控制信息，以协调HT设备与传统设备的传输。

7. 发明授权

US07245666B1 Soft symbol decoding for MIMO communication systems with reduced search complexity 有权
标题翻译：具有降低搜索复杂度的MIMO通信系统的软符号解码
公开(公告)号：US07245666B1
公开(公告)日：2007-07-17
申请号：US10408015
申请日：2003-04-03
申请人： James Gardner , Vincent K. Jones , D. J. Richard van Nee
发明人： James Gardner , Vincent K. Jones , D. J. Richard van Nee
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L1/06 , H04L1/005 , H04L1/0052 , H04L1/0054 , H04L1/0071 , H04L25/067 , H04L27/38 , H04L2025/0342 , H04L2025/03426
摘要： Soft symbol decoder algorithms for multiple input, multiple output (MIMO) receivers reduce the search complexity by searching over fewer than all possible combinations of transmitted symbols to compute log metrics for each transmitted bit from each transmit antenna. In one algorithm, a sub-optimal set of transmitted symbols is computed and the transmitted symbols are restricted to neighboring constellation points of the sub-optimal set. In another algorithm, all constellation points are searched for every antenna except one. In yet another algorithm, constellation points are searched excluding more than one antenna. The non-searched antenna(s) can be handled by either a bit stuffing or a soft slicing technique.
摘要翻译：用于多输入多输出（MIMO）接收机的软符号解码器算法通过搜索少于发射符号的所有可能组合来减少搜索复杂度，以计算每个发送天线中每个发送位的对数度量。在一种算法中，计算发送符号的次最佳集合，并将所发送的符号限于次优集合的相邻星座点。在另一种算法中，除了一个天线之外，搜索每个天线的所有星座点。在另一种算法中，搜索除了多于一个天线的星座点。非搜索天线可以通过位填充或软切片技术来处理。

8. 发明授权

US07161996B1 Multi-antenna wireless receiver chains with vector decoding 有权
标题翻译：多天线无线接收机链与矢量解码
公开(公告)号：US07161996B1
公开(公告)日：2007-01-09
申请号：US10376079
申请日：2003-02-26
申请人： Gregory C. Steele , D. J. Richard van Nee , Vincent K. Jones, IV , James Gardner , Geert Arnout Awater
发明人： Gregory C. Steele , D. J. Richard van Nee , Vincent K. Jones, IV , James Gardner , Geert Arnout Awater
IPC分类号： H04B7/10 , H04B1/69 , H04B7/212 , H04B7/216 , H03H7/30
CPC分类号： H04B7/0842 , H04B1/707 , H04B7/0848 , H04L23/02 , H04L25/023 , H04L27/227 , H04L2027/0059 , H04L2027/0067
摘要： A receiver chain is provided for use in wireless data communication including a plurality of receive antennas and a vector Barker decoder or a CCK decoder. The vector Barker decoder operates on the plurality of received signals, preferably processed through a plurality of channel matched filters. The weightings of the plurality of channels can be done using a slicer variance, a PLL variance or another method.
摘要翻译：提供接收机链，用于包括多个接收天线和向量巴克解码器或CCK解码器的无线数据通信。向量Barker解码器对多个接收信号进行操作，优选地通过多个信道匹配滤波器进行处理。多个信道的加权可以使用限幅器方差，PLL方差或另一种方法来完成。

9. 发明授权

US07561632B1 Beamforming techniques for MIMO communication systems 有权
标题翻译： MIMO通信系统的波束成形技术
公开(公告)号：US07561632B1
公开(公告)日：2009-07-14
申请号：US11414152
申请日：2006-04-27
申请人： Allert van Zelst , D. J. Richard van Nee , Vincent K. Jones
发明人： Allert van Zelst , D. J. Richard van Nee , Vincent K. Jones
IPC分类号： H04B7/02
CPC分类号： H04B7/0619 , H04B7/0434 , Y02D70/142 , Y02D70/444
摘要： Improved beamforming techniques are provided for use in MIMO (multiple-input, multiple-output) communication systems, including MIMO-OFDM systems. The techniques include: (1) determining beamforming (BF) weights using a smoothed singular value decomposition (SVD) of the channel matrix; (2) determining BF weights using a power-optimized minimum mean-square error (MMSE) technique when the number of available transmit antennas exceeds the number of signal streams; and (3) determining BF weights using a hybrid SVD-MMSE technique. Additional techniques for reducing the impulse response length of the BF weights and/or normalizing the power per transmit antenna or per data stream may be used in conjunction with these or other beamforming techniques.
摘要翻译：提供了改进的波束形成技术，用于包括MIMO-OFDM系统在内的MIMO（多输入多输出）通信系统。这些技术包括：（1）使用信道矩阵的平滑奇异值分解（SVD）来确定波束形成（BF）权重; （2）当可用发射天线的数量超过信号流数时，使用功率优化最小均方误差（MMSE）技术确定BF权重; 和（3）使用混合SVD-MMSE技术确定BF权重。可以结合这些或其他波束成形技术来使用用于减少BF加权的脉冲响应长度和/或使每个发射天线或每个数据流归一化功率的附加技术。

10. 发明授权

US08611457B2 Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices 有权
标题翻译：用于IEEE 802.11A扩展的修改的前导码结构，以允许802.11A设备和较高数据速率，MIMO或其他扩展设备之间的共存和互操作性
公开(公告)号：US08611457B2
公开(公告)日：2013-12-17
申请号：US13073701
申请日：2011-03-28
申请人： James Gardner , Vincent K. Jones, IV , D. J. Richard van Nee
发明人： James Gardner , Vincent K. Jones, IV , D. J. Richard van Nee
IPC分类号： H04L27/00
CPC分类号： H04L1/06 , H04B7/04 , H04L5/0023 , H04L5/0044 , H04L5/0048 , H04L5/0066 , H04L5/0091 , H04L5/1438 , H04L25/0226 , H04L27/261 , H04L27/2613 , H04W16/14 , H04W24/00 , H04W28/22 , H04W84/12 , H04W92/18 , H04W99/00
摘要： A modified preamble is used by extended devices that operate at higher rates, MIMO or other extensions relative to strict 802.11a-compliant devices. The extended devices might use multiple antenna techniques (MIMO), where multiple data streams are multiplexed spatially and/or multi-channel techniques, where an extended transmitter transmits using more than one 802.11 a channel at a time. Such extensions to IEEE 802.11 a can exist in extended devices. The modified preamble is usable for signaling, to legacy devices as well as extended devices, to indicate capabilities and to cause legacy devices or extended devices to defer to other devices such that the common communication channel is not subject to unnecessary interference. The modified preamble is also usable for obtaining MIMO channel estimates and/or multi-channel estimates. The modified preamble preferably includes properties that facilitate detection of conventional and/or extended modes (“mode detection”) and provides some level of coexistence with legacy IEEE 802.11 a devices.
摘要翻译：经修改的前同步码由相对于严格的符合802.11a标准的设备的较高速率，MIMO或其他扩展操作的扩展设备使用。扩展的设备可以使用多天线技术（MIMO），其中多个数据流在空间和/或多信道技术上复用，其中扩展发射机一次使用多于一个802.11的信道。 IEEE 802.11a的这种扩展可以存在于扩展设备中。经修改的前导码可用于对传统设备以及扩展设备进行信令，以指示能力并使遗留设备或扩展设备推迟到其他设备，使得公共通信信道不受不必要的干扰。经修改的前导码也可用于获得MIMO信道估计和/或多信道估计。经修改的前导码优选地包括便于检测常规和/或扩展模式（“模式检测”）并且提供与传统IEEE 802.11的设备的一些级别的性质的属性。

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