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61. 发明授权

US08478222B2 I/Q calibration for walking-IF architectures 有权
标题翻译：步进式IF架构的I / Q校准
公开(公告)号：US08478222B2
公开(公告)日：2013-07-02
申请号：US11968644
申请日：2008-01-02
申请人： Klaas Wortel , Rainer Gaethke , Vincent K. Jones , James Gardner
发明人： Klaas Wortel , Rainer Gaethke , Vincent K. Jones , James Gardner
IPC分类号： H04B7/00
CPC分类号： H04L27/364 , H04L27/3863
摘要： Systems and methodologies are described that facilitate calibration techniques for a station in a wireless communication system that can be utilized to provide joint estimates for distortion introduced by in-phase and quadrature (I/Q) imbalance and mixing-product modulated images.
摘要翻译：描述了促进无线通信系统中的站的校准技术的系统和方法，其可以用于提供由同相和正交（I / Q）不平衡和混合产物调制图像引入的失真的联合估计。

62. 发明申请

US20130121245A1 SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION OF PACKETS HAVING A PLURALITY OF FORMATS 有权
公开(公告)号：US20130121245A1
公开(公告)日：2013-05-16
申请号：US13466983
申请日：2012-05-08
申请人： Sameer Vermani , Santosh P. Abraham , Mohammad Hossein Taghavi Nasrabadi , Vincent K. Jones , Hemanth Sampath
发明人： Sameer Vermani , Santosh P. Abraham , Mohammad Hossein Taghavi Nasrabadi , Vincent K. Jones , Hemanth Sampath
IPC分类号： H04L29/06
CPC分类号： H04L29/06163 , H04L1/0011 , H04L1/0025 , H04L1/0033 , H04L1/0039 , H04L29/0653 , H04L69/18 , H04L69/22
摘要： Systems and methods for communicating packets having a plurality of formats are described herein. In some aspects, a signal (SIG) field in the preamble of a packet may indicate whether an extension field, such as an extension SIG field or SIG-B field, is included in the packet. In another aspect, one or more detectors may be used to auto-detect packets formatted as one of at least two different formats based on a short training field (STF) of a received packet. In some aspects, along training field (LTF) in the preamble of a packet may indicate whether the payload is repetition coded.

63. 发明授权

US07734979B1 ARQ for point to point links 有权
标题翻译： ARQ用于点对点链接
公开(公告)号：US07734979B1
公开(公告)日：2010-06-08
申请号：US12079998
申请日：2008-03-31
申请人： Vincent K. Jones , Gregory G. Raleigh , David P. Bokaie , Joseph Middleton , Ali Raissinia
发明人： Vincent K. Jones , Gregory G. Raleigh , David P. Bokaie , Joseph Middleton , Ali Raissinia
IPC分类号： G08C25/02 , H04L1/18
CPC分类号： H04L1/0065 , H04L1/0071 , H04L1/08 , H04L1/1887
摘要： An automatic retransmission system offering good latency and overhead characteristics combined with programmable tradeoffs among overhead, latency, and error performance. ARQ (Automatic Repeat reQuest) blocks present at both ends of a link coordinate to automatically attempt to re-send data if that data was not received properly the first time it was sent. Re-transmission from the transmitter (transmitter) is requested by the receiver (Receiver) via a highly reliable “Repeat Request” (RR) mechanism. This RR scheme carries sufficient information back to the transmitter for it to determine which previous transmissions need to be re-sent.
摘要翻译：自动重传系统提供良好的延迟和开销特征，并结合开销，延迟和错误性能之间的可编程权衡。 ARQ（自动重复请求）块存在于链路坐标的两端，以便在第一次发送时数据未正确接收时自动尝试重新发送数据。通过高可靠性“重复请求”（RR）机制，由接收机（接收机）请求来自发射机（发射机）的重传。该RR方案将足够的信息返回给发射机，以确定哪些先前的传输需要被重新发送。

64. 发明申请

US20100091912A1 METHODS AND SYSTEMS USING NORM APPROXIMATION FOR MAXIMUM LIKELIHOOD MIMO DECODING 有权
标题翻译：使用正态近似最大似然MIMO解码的方法和系统
公开(公告)号：US20100091912A1
公开(公告)日：2010-04-15
申请号：US12351820
申请日：2009-01-10
申请人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
发明人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
IPC分类号： H04L27/06
CPC分类号： H04L25/03171 , H04L5/0023 , H04L25/03197 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： Certain embodiments of the present disclosure provide techniques for approximate computation of l2 norms as a part of the maximum likelihood (ML) detection: tri-maxmin, maxsum and sortsum algorithms. The proposed approximation schemes show better accuracy than conventional approximation schemes—the abssum and maxmin algorithms, while the computational complexity is very similar. The error rate performance of the ML detection that utilizes proposed norm-approximation techniques are very close to the reference ML detection with exact calculation of l2 norms, while the computational complexity is significantly smaller.
摘要翻译：本公开的某些实施例提供了作为最大似然（ML）检测的一部分近似计算l2范数的技术：tri-maxmin，maxsum和sortsum算法。所提出的近似方案显示出比传统的近似方案更好的精度 - abssum和maxmin算法，而计算复杂度非常相似。利用提出的范数近似技术的ML检测的误码率性能与精确计算l2范数的参考ML检测非常接近，而计算复杂度显着更小。

65. 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。

66. 发明申请

US20090225703A1 MEDIUM ACCESS CONTROL PROTOCOL FOR OFDM WIRELESS NETWORKS 有权
标题翻译： OFDM无线网络中访问控制协议
公开(公告)号：US20090225703A1
公开(公告)日：2009-09-10
申请号：US12467163
申请日：2009-05-15
申请人： Michael A. Pollack , Vincent K. Jones , Gregory G. Raleigh
发明人： Michael A. Pollack , Vincent K. Jones , Gregory G. Raleigh
IPC分类号： H04W72/12 , H04L27/28
CPC分类号： H04L5/023 , H04L27/2602
摘要： A medium access contention protocol that is highly beneficial in wireless networks and particularly in wireless networks that employ a fixed minimum burst size such as OFDM wireless networks. In one embodiment, a MAC protocol is a demand-assigned protocol that maximizes utilization of the bus medium (the allocated frequency spectrum.) Each data communication device (DCD) in the network communicates with a central access point (AP). Multiple DCDs may request access from the AP in the same request access (RA) burst. Each of the multiple DCDs transmits its access request to the AP within a frequency domain channel in the RA burst that is orthogonal to the frequency domain channels used by the other DCDs requesting access. Each DCD includes channel training information in the access request burst to allow the AP and/or DCD to adapt to rapid variations in channel characteristics.
摘要翻译：一种媒体接入争用协议，其在无线网络中，特别是在使用诸如OFDM无线网络的固定的最小突发大小的无线网络中是非常有益的。在一个实施例中，MAC协议是使总线介质（所分配的频谱）的利用最大化的需求分配协议。网络中的每个数据通信设备（DCD）与中央接入点（AP）通信。多个DCD可以在相同的请求访问（RA）突发中请求来自AP的访问。多个DCD中的每一个在RA突发中的频域信道内向AP发送其接入请求，该RA突发与正在其他DCD请求接入的频域信道正交。每个DCD包括访问请求突发中的信道训练信息，以允许AP和/或DCD适应信道特性的快速变化。

67. 发明授权

US07372913B2 Pilot tones in a multi-transmit OFDM system usable to capture transmitter diversity benefits 有权
标题翻译：可用于捕获发射机分集优势的多发射OFDM系统中的导频音调
公开(公告)号：US07372913B2
公开(公告)日：2008-05-13
申请号：US11187603
申请日：2005-07-21
申请人： Albert van Zelst , Vincent K. Jones
发明人： Albert van Zelst , Vincent K. Jones
IPC分类号： H04K1/10 , H04B7/06
CPC分类号： H04L1/0625 , H04B7/04 , H04B7/0667 , H04B7/10 , H04K1/10 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0064 , H04L25/0204 , H04L25/0226 , H04L27/3488
摘要： In a wireless transmitter having a plurality of spatial streams differentiable at a receiver, wherein data is encoded and transmitted over a communication channel with pilot tones to provide the receiver with information about the effects of the communication channel and/or transmitter impairments and/or receiver impairments on the spatial streams transmitted, the benefits can be provided by identifying a plurality of symbol periods within which symbols representing some of the encoded data are to be transmitted, identifying pilot tone values for the plurality of symbol periods, wherein the identified pilot tone values are such that the receiver, when receiving at least some of the pilot tones having the identified pilot tone values, is provided with signals enabling the receiver to characterize the communication channel and/or transmitter impairments and/or receiver impairments to obtain transmit stream diversity gain, and transmitting the symbols and the pilot tones over the plurality of spatial streams for the plurality of symbol periods. In some embodiments, the pilot tones are orthogonal over space and time or over space and time and frequency, while in others they are semi-orthogonal. Pilot tone values might be of a constant amplitude and phase shifted, or might also have amplitude variations wherein at least two pilot tones are nonzero for spatial streams for a given symbol period.
摘要翻译：在具有在接收机可微分的多个空间流的无线发射机中，其中通过具有导频音调的通信信道对数据进行编码和发送，以向接收机提供关于通信信道和/或发射机损伤和/或接收机的影响的信息对发送的空间流的损伤，可以通过识别多个符号周期来提供益处，在多个符号周期内将表示一些编码数据的符号发送，识别多个符号周期的导频音值，其中所识别的导频音调值使得接收机在接收到具有所识别的导频音值的至少一些导频音时，被提供有使得接收机能够表征通信信道和/或发射机损伤和/或接收机损伤以获得发射流分集增益的信号并且通过多个传输符号和导频音调的多个符号周期的空间流。在一些实施例中，导频音调在空间和时间上或在空间和时间和频率上是正交的，而在另一些实施例中，它们是半正交的。导频音调值可能具有恒定幅度和相移，或者也可能具有振幅变化，其中对于给定符号周期，空间流的至少两个导频音调不为零。

68. 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。

69. 发明授权

US07158585B2 OFDM channel estimation in the presence of interference 有权
标题翻译：在存在干扰的情况下进行OFDM信道估计
公开(公告)号：US07158585B2
公开(公告)日：2007-01-02
申请号：US11300000
申请日：2005-12-12
申请人： Vincent K. Jones , Jonathan Leary , James M. Gardner
发明人： Vincent K. Jones , Jonathan Leary , James M. Gardner
IPC分类号： H03K9/00 , H03D1/00 , H04J11/00
CPC分类号： H04L25/0234 , H04L25/0232 , H04L27/2647 , H04Q2213/13054 , H04Q2213/13166 , H04Q2213/1319 , H04Q2213/13291 , H04Q2213/13335
摘要： Systems and methods for estimating channel response in the presence of interference. Interference and/or noise present on received training symbols is estimated. Based on the measured noise and/or interference, a weighting among training symbols is developed. Channel response is then estimated based on a weighted least squares procedure.
摘要翻译：用于在存在干扰的情况下估计信道响应的系统和方法。估计接收到的训练符号上存在的干扰和/或噪声。基于测量的噪声和/或干扰，开发训练符号之间的加权。然后基于加权最小二乘法来估计信道响应。

70. 发明授权

US07010049B1 OFDM channel estimation in the presence of interference 有权
公开(公告)号：US07010049B1
公开(公告)日：2006-03-07
申请号：US10263454
申请日：2002-10-02
申请人： Vincent K. Jones , Jonathan Leary , James M. Gardner
发明人： Vincent K. Jones , Jonathan Leary , James M. Gardner
IPC分类号： H04L27/00 , H04K1/10 , H03D1/00
CPC分类号： H04L25/0234 , H04L25/0232 , H04L27/2647 , H04Q2213/13054 , H04Q2213/13166 , H04Q2213/1319 , H04Q2213/13291 , H04Q2213/13335
摘要： Systems and methods for estimating channel response in the presence of interference. Interference and/or noise present on received training symbols is estimated. Based on the measured noise and/or interference, a weighting among training symbols is developed. Channel response is then estimated based on a weighted least squares procedure.

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