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31. 发明授权

US08483328B2 System for soft symbol decoding MIMO log-map detection 有权
标题翻译：用于软符号解码MIMO系统的对数映射检测
公开(公告)号：US08483328B2
公开(公告)日：2013-07-09
申请号：US12629282
申请日：2009-12-02
申请人： Didier Johannes Richard van Nee , Vincent Knowles Jones, IV , Geert Arnout Awater , James Gardner
发明人： Didier Johannes Richard van Nee , Vincent Knowles Jones, IV , Geert Arnout Awater , James Gardner
IPC分类号： H04L27/06
CPC分类号： H04L27/2032 , H04L25/03006 , H04L25/067 , H04L2025/03414 , H04L2025/03426
摘要： A soft symbol decoder for use in a multiple input multiple output (MIMO) and OFDM (orthogonal frequency division multiplexing) system. The decoder generates soft symbol values for a digital signal that represents a number of source bits. The source bits are transmitted as symbols in corresponding to points in a signaling constellation. Soft metrics are determined by searching for all possible multi-dimensional symbols that could have been transmitted. The method includes transmitting a sample of the multi-dimensional symbol using K transmit antennas. The multi-dimensional symbol is represent-able as a complex, K-dimensional vector x. Each vector component of vector x represents a signal transmitted with one of the K transmit antennas. After transmission through a communication channel, a sample corresponding to the transmitted sample is received. The received sample is represented by a complex, N-dimensional vector y, where N is the number of receive antennas in the MIMO system. After the sample is received, a soft metric L(bi) is determined for each bit bi encoded by x according to the equation: L ⁡ ( b i ) = σ - 2 · ( min x j ❘ b i = - 1 ⁢  y - Hx j  2 - min x j ❘ b i = + 1 ⁢  y - Hx j  2 ) , , and xj represents all possible values for x. In addition, a reduced complexity method is used for providing soft metric values in the MIMO system. This exemplary aspect reduces the complexity of the above computations from 2BK to 2B(K−1), where B is the number of bits transmitted per symbol per antenna.
摘要翻译：一种用于多输入多输出（MIMO）和OFDM（正交频分复用）系统的软符号解码器。解码器产生表示多个源位的数字信号的软符号值。源比特在对应于信令星座中的点被作为符号发送。通过搜索可能已经发送的所有可能的多维符号来确定软度量。该方法包括使用K个发送天线发送多维符号的采样。多维符号可以表示为复杂的K维向量x。矢量x的每个矢量分量表示与K个发射天线中的一个发射的信号。在通过通信信道传输之后，接收对应于发送的样本的样本。接收的样本由复数N维向量y表示，其中N是MIMO系统中的接收天线的数量。在接收到样本之后，根据以下等式为由x编码的每个比特bi确定软度量L（bi）：L⁡（bi）= sigma-2·（min xj | bi =-Iy-Hx j2 - min xj | bi = +1y - Hx j2），xj表示x的所有可能值。另外，降低复杂度的方法用于在MIMO系统中提供软度量值。该示例性方面降低了从2BK到2B（K-1）的上述计算的复杂度，其中B是每个天线每符号发送的比特数。

32. 发明授权

US08023397B2 Joint packet detection in a wireless communication system with one or more receivers 有权
标题翻译：在具有一个或多个接收机的无线通信系统中的联合分组检测
公开(公告)号：US08023397B2
公开(公告)日：2011-09-20
申请号：US12554438
申请日：2009-09-04
申请人： Geert Arnout Awater , James Gardner , Richard Van Nee , Gregory C. Steele
发明人： Geert Arnout Awater , James Gardner , Richard Van Nee , Gregory C. Steele
IPC分类号： H04J11/00
CPC分类号： H04B17/318
摘要： A packet detector joint detects 802.11a packets, 802.11b packets and interference that is within a monitored frequency range but is not formatted as 802.11a packets or 802.11b packets. The packet detector can use signals from one or more antennas. Detection of signals is done using differentially detected correlations. In addition to packet detection, the packet detector can identify signal levels, noise levels and locations of narrowband interference. The process of packet detection and identifying other indicators can be done simultaneously and as the signal is being received.
摘要翻译：分组检测器联合检测802.11a分组，802.11b分组和处于受监视频率范围内的干扰，但不被格式化为802.11a分组或802.11b分组。分组检测器可以使用来自一个或多个天线的信号。使用差分检测的相关性来完成信号的检测。除了分组检测之外，分组检测器可以识别信号电平，噪声电平和窄带干扰的位置。数据包检测和识别其他指示符的过程可以同时进行，并且正在接收信号。

33. 发明授权

US07996236B2 Wireless LAN with load balancing 有权
标题翻译：无线局域网与负载均衡
公开(公告)号：US07996236B2
公开(公告)日：2011-08-09
申请号：US11650011
申请日：2007-01-05
申请人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
发明人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
IPC分类号： G06Q10/00
CPC分类号： H04W36/22 , H04W36/30 , H04W48/08 , H04W48/16
摘要： A communication system with a plurality of access points (AP1, AP2, AP3) and at least one network station (5, 6), the network station (5, 6) being arranged to communicate with one of said the plurality of access points (AP1, AP2, AP3) through a wireless communication protocol, each access point (AP1, AP2, AP3) is able to monitor its access point traffic load and transmit an access point traffic load parameter (ATT) to the network station (5, 6), and the network station (5, 6) is able to monitor its network station traffic load; store a network station traffic load parameter (AUTT); receive access point traffic load parameters (ATT) from the access points (AP1, AP2, AP3); and select a communication connection with one of the access points (AP1, AP2, AP3) using a predetermined cost function taking the access point traffic load parameters (ATT) and the network station traffic load parameters (AUTT) into account.
摘要翻译：一种具有多个接入点（AP1，AP2，AP3）和至少一个网络站（5,6）的通信系统，所述网络站（5,6）被布置为与所述多个接入点中的一个通信 AP1，AP2，AP3）通过无线通信协议，每个接入点（AP1，AP2，AP3）能够监视其接入点业务负载，并将接入点业务负载参数（ATT）发送到网络站），并且网络站（5,6）能够监视其网络站的业务负载; 存储网络站流量负载参数（AUTT）; 从接入点（AP1，AP2，AP3）接收接入点业务负载参数（ATT）; 并且考虑到接入点业务负载参数（ATT）和网络站业务负载参数（AUTT），使用预定的成本函数来选择与接入点（AP1，AP2，AP3）之一的通信连接。

34. 发明授权

US07668267B2 Search efficient MIMO trellis decoder 失效
标题翻译：搜索高效的MIMO网格解码器
公开(公告)号：US07668267B2
公开(公告)日：2010-02-23
申请号：US11942283
申请日：2007-11-19
申请人： James Gardner , Vincent Knowles Jones, IV , Didier Johannes Richard Van Nee , Geert Arnout Awater
发明人： James Gardner , Vincent Knowles Jones, IV , Didier Johannes Richard Van Nee , Geert Arnout Awater
IPC分类号： H04B7/10
CPC分类号： H03M13/256 , H03M13/3905
摘要： A decoder generates distance and label metrics associated with each label of a coset transmitted in a multi-input multi-output communication system having Mt transmit antennas and Mr receive antennas by performing 2(“u+n”)(Mt−1) searches, where n is the number of encoded bits used to identify one of 2u cosets at the transmitting end and u is the number of unencoded bits used to select one of 2u labels at the transmitting end. The decoder forms an intermediate vector quantity associated with one of the transmit antennas to compute the metrics associated with each of the remaining transmit antennas. The decoder then forms a second intermediate vector quantity to compute the metrics associated with the transmit antenna that was used to form the first intermediate variable. The metrics so computed are used by a Viterbi decoder to identify the coset and the most likely transmitted label in that coset.
摘要翻译：解码器通过执行2（“u + n”）（Mt-1）搜索，生成与具有Mt个发送天线和Mr个接收天线的多输入多输出通信系统中发送的陪集的每个标签相关联的距离和标签量度，其中n是用于识别发送端的2u陪集中的一个的编码比特数，u是用于在发送端选择2u个标签之一的未编码比特数。解码器形成与发射天线之一相关联的中间矢量，以计算与每个剩余发射天线相关联的度量。然后，解码器形成第二中间矢量，以计算与用于形成第一中间变量的发射天线相关联的度量。如此计算的度量被维特比解码器用于识别该陪集中的陪集和最可能发送的标签。

35. 发明授权

US07065158B2 Detection method for phase-modulated symbols with a correlator-bank 有权
标题翻译：具有相关器组的相位调制符号的检测方法
公开(公告)号：US07065158B2
公开(公告)日：2006-06-20
申请号：US09989052
申请日：2001-11-20
申请人： Geert Arnout Awater , Robert John Kopmeiners , Didier Johannes Richard Van Nee
发明人： Geert Arnout Awater , Robert John Kopmeiners , Didier Johannes Richard Van Nee
IPC分类号： H04L27/04 , H04L27/02 , H04L27/36 , H04L27/34 , H03K9/10
CPC分类号： H04J13/16 , H04L23/02 , H04L27/2275
摘要： Detection of a symbol from a received signal wherein the symbol is a selected symbol out of a predetermined set of symbols, wherein each symbol of the predetermined set is a complementary coded keying (CCK) symbol having a sequence of chips wherein each of the chips is phase shift keying (PSK)-modulated according to a selected modulation code wherein each of the selected modulation codes has a first sub-modulation code which is a selection from a plurality of first sets of predetermined phase modulating elements and a second sub-modulation code which is a selection from one second set of predetermined phase modulating elements wherein at least one of the predetermined phase modulating elements of the second set is a complex value such as defined in the high speed IEEE 802.11b standard, wherein a modulation code is selected from the modulation codes which correlates according to a correlation method with the received signal.
摘要翻译：从接收信号中检测符号，其中符号是预定符号集合中的选定符号，其中预定集合的每个符号是具有码片序列的互补编码键控（CCK）符号，其中每个码片是根据选择的调制码调制的相移键控（PSK），其中所选择的调制码中的每一个具有作为来自多个第一组预定相位调制元素的选择的第一子调制码和第二子调制码其是来自一组第二组预定相位调制元件的选择，其中第二组的预定相位调制元件中的至少一个是诸如在高速IEEE 802.11b标准中定义的复数值，其中调制码从根据相关方法与接收信号相关的调制码。

36. 发明授权

US07046649B2 Interoperability for bluetooth/IEEE 802.11 有权
标题翻译：蓝牙/ IEEE 802.11互操作性
公开(公告)号：US07046649B2
公开(公告)日：2006-05-16
申请号：US09761074
申请日：2001-01-16
申请人： Geert Arnout Awater , Ran-Hong Yan
发明人： Geert Arnout Awater , Ran-Hong Yan
IPC分类号： H04Q7/24
CPC分类号： H04W16/14 , H04L69/18 , H04W72/1215 , H04W84/12 , H04W84/18 , H04W88/06 , H04W88/10
摘要： The key of the invention is to introduce an interoperability device in a communication system which integrates an IEEE 802.11 transceiver and a Bluetooth transceiver. The device prevents that one transceiver is transmitting while the other is receiving, which would cause interference at the receiving transceiver. In addition, the device preferably prevents that both systems are transmitting at the same time to avoid interference at the receiving device(s). Optionally the device prohibits simultaneous reception of both transceivers. In that way the radio receiver can be shared between the devices, allowing a cheaper and smaller hardware design.
摘要翻译：本发明的关键是在集成IEEE 802.11收发器和蓝牙收发器的通信系统中引入互操作性设备。该设备防止一个收发器在另一个收发器正在接收时发送，这将在接收收发器处造成干扰。此外，该装置优选地防止两个系统同时发射以避免在接收装置处的干扰。可选地，该设备禁止同时接收两个收发器。以这种方式，无线电接收器可以在设备之间共享，从而允许更便宜和更小的硬件设计。

37. 发明授权

US5862182A OFDM digital communications system using complementary codes 失效
标题翻译： OFDM数字通信系统采用互补码
公开(公告)号：US5862182A
公开(公告)日：1999-01-19
申请号：US688574
申请日：1996-07-30
申请人： Geert Arnout Awater , Adriaan Kamerman , Anjur Sundaresan Krishnakumar , Didier J. R. van Nee
发明人： Geert Arnout Awater , Adriaan Kamerman , Anjur Sundaresan Krishnakumar , Didier J. R. van Nee
IPC分类号： H04L27/36 , H04J11/00 , H04L27/26 , H04L27/38 , H04L27/10
CPC分类号： H04L23/02 , H04J13/10 , H04L27/2602 , H04L27/2617 , H04L27/2621
摘要： The encoding/transmission of information in an OFDM system is enhanced by using complementary codes. The complementary codes, more particularly, are converted into phase vectors and the resulting phase vectors are then used to modulate respective carrier signals. The modulated result is then transmitted to a receiver which decodes the received signals to recover the encoded information.
摘要翻译：通过使用互补码来增强OFDM系统中信息的编码/传输。互补码更具体地被转换为相位矢量，然后使用所得到的相位矢量来调制相应的载波信号。然后将调制结果发送到接收机，其对接收到的信号进行解码以恢复编码信息。

38. 发明授权

US08719684B2 Guard interval signaling for data symbol number determination 有权
标题翻译：用于数据符号数确定的保护间隔信令
公开(公告)号：US08719684B2
公开(公告)日：2014-05-06
申请号：US13221604
申请日：2011-08-30
申请人： Didier Johannes Richard Van Nee , Geert Arnout Awater
发明人： Didier Johannes Richard Van Nee , Geert Arnout Awater
IPC分类号： G06F11/10
CPC分类号： G06F11/10 , H04L1/0079 , H04L27/2605 , H04W28/06
摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to techniques for accurately determining a number of data symbols in a data packet. The techniques provided herein may allow a receiving terminal to correct number of symbol calculations based on such ambiguous length field values.
摘要翻译：本公开的某些方面通常涉及无线通信，更具体地，涉及用于准确地确定数据分组中的数据符号数目的技术。本文提供的技术可以允许接收终端基于这种不明确的长度字段值来校正符号计算的数量。

39. 发明授权

US08325644B2 Mixed mode preamble design for signaling number of streams per client 有权
标题翻译：用于每个客户端的信令数量的混合模式前导码设计
公开(公告)号：US08325644B2
公开(公告)日：2012-12-04
申请号：US12684258
申请日：2010-01-08
申请人： Hemanth Sampath , Richard Van Nee , Albert Van Zeist , Geert Arnout Awater
发明人： Hemanth Sampath , Richard Van Nee , Albert Van Zeist , Geert Arnout Awater
IPC分类号： H04W4/18
CPC分类号： H04L1/0028 , H04B7/0413 , H04L1/02
摘要： Certain aspects of the present disclosure present a technique for designing a signal (SIG) field of a mixed mode preamble transmitted to a plurality of user terminals. The SIG field can signal a number of spatial streams assigned to each user. The SIG field is designed such that a robust interference cancellation can be achieved at each user terminal.
摘要翻译：本公开的某些方面提供了一种用于设计发送到多个用户终端的混合模式前导码的信号（SIG）字段的技术。 SIG字段可以发送分配给每个用户的多个空间流。 SIG字段被设计为使得可以在每个用户终端处实现鲁棒的干扰消除。

40. 发明授权

US07649966B2 System for soft symbol decoding with MIMO log-map detection 有权
标题翻译：用于利用MIMO对数映射检测进行软符号解码的系统
公开(公告)号：US07649966B2
公开(公告)日：2010-01-19
申请号：US11965511
申请日：2007-12-27
申请人： Didier Johannes Richard van Nee , Vincent Knowles Jones, IV , Geert Arnout Awater , James Gardner
发明人： Didier Johannes Richard van Nee , Vincent Knowles Jones, IV , Geert Arnout Awater , James Gardner
IPC分类号： H04L27/06 , H04L1/02
CPC分类号： H04L27/2032 , H04L25/03006 , H04L25/067 , H04L2025/03414 , H04L2025/03426
摘要： A soft symbol decoder for use in a multiple input multiple output (MIMO) and OFDM (orthogonal frequency division multiplexing) system. The decoder generates soft symbol values for a digital signal that represents a number of source bits. The source bits are transmitted as symbols in corresponding to points in a signaling constellation. Soft metrics are determined by searching for all possible multi-dimensional symbols that could have been transmitted. The method includes transmitting a sample of the multi-dimensional symbol using K transmit antennas. The multi-dimensional symbol is represent-able as a complex, K-dimensional vector x. Each vector component of vector x represents a signal transmitted with one of the K transmit antennas. After transmission through a communication channel, a sample corresponding to the transmitted sample is received. The received sample is represented by a complex, N-dimensional vector y, where N is the number of receive antennas in the MIMO system. After the sample is received, a soft metric L(bi) is determined for each bit bi encoded by x according to the equation: L ⁡ ( b i ) = σ - 2 · ( min x j | b i = - 1 ⁢  y - Hx j  2 - min x j | b i = + 1 ⁢  y - Hx j  2 ) , , and ⁢ ⁢ x j represents all possible values for x. In addition, a reduced complexity method is used for providing soft metric values in the MIMO system. This exemplary aspect reduces the complexity of the above computations from 2BK to 2B(K−1), where B is the number of bits transmitted per symbol per antenna.
摘要翻译：一种用于多输入多输出（MIMO）和OFDM（正交频分复用）系统的软符号解码器。解码器产生表示多个源位的数字信号的软符号值。源比特在对应于信令星座中的点被作为符号发送。通过搜索可能已经发送的所有可能的多维符号来确定软度量。该方法包括使用K个发送天线发送多维符号的采样。多维符号可以表示为复杂的K维向量x。矢量x的每个矢量分量表示与K个发射天线中的一个发射的信号。在通过通信信道传输之后，接收对应于发送的样本的样本。接收的样本由复数N维向量y表示，其中N是MIMO系统中的接收天线的数量。在接收到样本之后，根据以下等式为由x编码的每个比特bi确定软度量L（bi）：L⁡（b i）= sigma-2。（min x j | b i = - 1y - Hx j2 - min x j | b i = +1y - Hx j2），，而且，x x代表x的所有可能值。另外，降低复杂度的方法用于在MIMO系统中提供软度量值。该示例性方面降低了从2BK到2B（K-1）的上述计算的复杂度，其中B是每个天线每符号发送的比特数。

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