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1. 发明授权

US08416890B2 Decoding techniques for multi-antenna systems 有权
公开(公告)号：US08416890B2
公开(公告)日：2013-04-09
申请号：US12404433
申请日：2009-03-16
申请人： Geert Arnout Awater , D. J. Richard Van Nee
发明人： Geert Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04L27/06
CPC分类号： H04L27/36 , H04L2025/0342 , H04L2025/03426
摘要： In one embodiment, a wireless device for a wireless data communication system including the wireless device and a base station. The base station includes a plurality of first groups and a signal-processing unit. Each first group includes a receiver and at least one antenna connected to the receiver. The signal-processing unit includes memory and a processor adapted to process signals received by the first groups using a Maximum Likelihood Detection (MLD) method. The wireless device includes a plurality of second groups, each second group adapted to transmit a wireless signal to at least one first group via a corresponding communication channel. Each second group further includes a transmitter and at least one antenna connected to the transmitter. The signal-processing unit is adapted to store, in the memory, information corresponding to one or more transfer functions, each transfer function corresponding to transmission of a wireless signal from an antenna of the second groups to an antenna of the first groups. The transmitters and receivers are adapted to operate at essentially the same frequency or frequency band. Two or more of the communication channels are generated simultaneously. Each transmitter is adapted to modulate an information signal on a radio-frequency signal according to a Quadrature Amplitude Modulation (QAM) method to transmit QAM symbols. Each receiver is adapted to demodulate information signals from a received radio-frequency signal according to the QAM method.

2. 发明授权

US08041394B2 Methods and systems for transmitting an information signal in a multiple antenna communication system 有权
标题翻译：用于在多天线通信系统中发送信息信号的方法和系统
公开(公告)号：US08041394B2
公开(公告)日：2011-10-18
申请号：US11146511
申请日：2005-06-07
申请人： Geert Arnout Awater , D. J. Richard Van Nee
发明人： Geert Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04M1/00
CPC分类号： H04B7/0615 , H04B7/0854
摘要： Methods and systems are provided for transmitting a plurality of information signals in a multiple antenna communication system. One or more information signals are coded using a plurality of coders to generate the plurality of coded information signals and an Inverse Fast Fourier Transformation is performed on each of the plurality of coded information signals to create a corresponding output signal. Each of the corresponding output signals are transmitted on a different antenna. Each of the plurality of coded information signals can optionally be separated into K signals. On the receiver side, a signal comprising K different frequencies is received on at least N receive antennas and a Fast Fourier Transformation is applied to each of the at least N received versions of the signal comprising K different frequencies to generate N*K low frequency signals. The N*K separate low frequency signals are then combined to recover a transmitted information signal, based on one or more transfer functions from each of a plurality of transmit antennas to each of the N receive antennas.
摘要翻译：提供了用于在多天线通信系统中发送多个信息信号的方法和系统。使用多个编码器对一个或多个信息信号进行编码，以生成多个编码信息信号，并且对多个编码信息信号中的每一个执行反快速傅立叶变换以产生相应的输出信号。每个相应的输出信号在不同的天线上传输。多个编码信息信号中的每一个可以可选地分离成K个信号。在接收机侧，在至少N个接收天线上接收包含K个不同频率的信号，并且将快速傅里叶变换应用于包括K个不同频率的信号的至少N个接收版本中的每一个，以产生N * K个低频信号。然后，组合N * K个分离低频信号，以便基于从多个发射天线中的每一个到N个接收天线中的每一个的一个或多个传输函数来恢复所发送的信息信号。

3. 发明申请

US20090190697A1 DECODING TECHNIQUES FOR MULTI-ANTENNA SYSTEMS 有权
标题翻译：多天线系统的解码技术
公开(公告)号：US20090190697A1
公开(公告)日：2009-07-30
申请号：US12404433
申请日：2009-03-16
申请人： Geert Arnout Awater , D. J. Richard Van Nee
发明人： Geert Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04L27/06
CPC分类号： H04L27/36 , H04L2025/0342 , H04L2025/03426
摘要： In one embodiment, a wireless device for a wireless data communication system including the wireless device and a base station. The base station includes a plurality of first groups and a signal-processing unit. Each first group includes a receiver and at least one antenna connected to the receiver. The signal-processing unit includes memory and a processor adapted to process signals received by the first groups using a Maximum Likelihood Detection (MLD) method. The wireless device includes a plurality of second groups, each second group adapted to transmit a wireless signal to at least one first group via a corresponding communication channel. Each second group further includes a transmitter and at least one antenna connected to the transmitter. The signal-processing unit is adapted to store, in the memory, information corresponding to one or more transfer functions, each transfer function corresponding to transmission of a wireless signal from an antenna of the second groups to an antenna of the first groups. The transmitters and receivers are adapted to operate at essentially the same frequency or frequency band. Two or more of the communication channels are generated simultaneously. Each transmitter is adapted to modulate an information signal on a radio-frequency signal according to a Quadrature Amplitude Modulation (QAM) method to transmit QAM symbols. Each receiver is adapted to demodulate information signals from a received radio-frequency signal according to the QAM method.
摘要翻译：在一个实施例中，一种用于包括无线设备和基站的无线数据通信系统的无线设备。基站包括多个第一组和信号处理单元。每个第一组包括接收器和连接到接收器的至少一个天线。信号处理单元包括存储器和适于使用最大似然检测（MLD）方法处理由第一组接收的信号的处理器。无线设备包括多个第二组，每个第二组适于经由相应的通信信道将无线信号发送到至少一个第一组。每个第二组还包括发射机和连接到发射机的至少一个天线。信号处理单元适于在存储器中存储对应于一个或多个传送函数的信息，对应于无线信号从第二组的天线到第一组的天线的传输的每个传递函数。发射机和接收机适于在基本上相同的频率或频带上操作。同时产生两个或多个通信信道。每个发射机适于根据正交幅度调制（QAM）方法对射频信号上的信息信号进行调制，以传输QAM符号。每个接收机适于根据QAM方法从接收的射频信号中解调信息信号。

4. 发明授权

US08351988B2 Methods and systems for transmitting an information signal in a multiple antenna communication system 有权
标题翻译：用于在多天线通信系统中发送信息信号的方法和系统
公开(公告)号：US08351988B2
公开(公告)日：2013-01-08
申请号：US13236141
申请日：2011-09-19
申请人： Geert Arnout Awater , D. J. Richard Van Nee
发明人： Geert Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04M1/00
CPC分类号： H04B7/0615 , H04B7/0854
摘要： Methods and systems are provided for transmitting a plurality of information signals in a multiple antenna communication system. One or more information signals are coded using a plurality of coders to generate the plurality of coded information signals and an Inverse Fast Fourier Transformation is performed on each of the plurality of coded information signals to create a corresponding output signal. Each of the corresponding output signals are transmitted on a different antenna. Each of the plurality of coded information signals can optionally be separated into K signals. On the receiver side, a signal comprising K different frequencies is received on at least N receive antennas and a Fast Fourier Transformation is applied to each of the at least N received versions of the signal comprising K different frequencies to generate N*K low frequency signals. The N*K separate low frequency signals are then combined to recover a transmitted information signal, based on one or more transfer functions from each of a plurality of transmit antennas to each of the N receive antennas.
摘要翻译：提供了用于在多天线通信系统中发送多个信息信号的方法和系统。使用多个编码器对一个或多个信息信号进行编码，以生成多个编码信息信号，并且对多个编码信息信号中的每一个执行反快速傅立叶变换以产生相应的输出信号。每个相应的输出信号在不同的天线上传输。多个编码信息信号中的每一个可以可选地分离成K个信号。在接收机侧，在至少N个接收天线上接收包含K个不同频率的信号，并且将快速傅里叶变换应用于包括K个不同频率的信号的至少N个接收版本中的每一个，以产生N * K个低频信号。然后，组合N * K个分离低频信号，以便基于从多个发射天线中的每一个到N个接收天线中的每一个的一个或多个传输函数来恢复所发送的信息信号。

5. 发明申请

US20090274237A1 BEAMFORMING TECHNIQUES FOR MIMO COMMUNICATION SYSTEMS 有权
标题翻译： MIMO通信系统的波束形成技术
公开(公告)号：US20090274237A1
公开(公告)日：2009-11-05
申请号：US12502300
申请日：2009-07-14
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： H04L1/02
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。

6. 发明授权

US06922570B2 Increased data communication capacity of a high rate wireless network 失效
标题翻译：提高高速率无线网络的数据通信能力
公开(公告)号：US06922570B2
公开(公告)日：2005-07-26
申请号：US09849089
申请日：2001-05-04
申请人： Greet Arnout Awater , D. J. Richard Van Nee
发明人： Greet Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04B7/06 , H04B7/08 , H04B1/38 , H04M1/00
CPC分类号： H04B7/0615 , H04B7/0854
摘要： The invention relates to a wireless radiofrequency data communication system comprising: a base-station comprising multiple first sets and a signal processing-unit, wherein each first set comprises a transmitter- and receiver-unit provided with a transmitter and a receiver and at least one antenna which is connected to the transmitter- and receiver-unit, wherein the signal processing-unit is connected with each of the first sets for processing signals received by the first sets and processing signals to be transmitted by the first sets, and multiple second sets, wherein each second set comprises a transmitter- and receiver-unit provided with a transmitter and a receiver and at least one antenna which is connected to the transmitter- and receiver-unit.
摘要翻译：本发明涉及一种无线射频数据通信系统，包括：基站，包括多个第一组和信号处理单元，其中每个第一组包括发射机和接收机单元，该发射机和接收机单元设置有发射机和接收机，以及至少一个天线，其连接到所述发射机和接收机单元，其中所述信号处理单元与所述第一组中的每一个连接，用于处理由所述第一组接收的信号和将被所述第一组发送的处理信号，以及多个第二组其中每个第二组包括设置有发射机和接收机的发射机和接收机单元以及连接到发射机和接收机单元的至少一个天线。

7. 发明授权

US07515659B2 Decoding techniques for multi-antenna systems 有权
标题翻译：多天线系统的解码技术
公开(公告)号：US07515659B2
公开(公告)日：2009-04-07
申请号：US11588986
申请日：2006-10-27
申请人： Greet Arnout Awater , D. J. Richard Van Nee
发明人： Greet Arnout Awater , D. J. Richard Van Nee
IPC分类号： H04L27/06 , H04L5/12
CPC分类号： H04L27/36 , H04L2025/0342 , H04L2025/03426
摘要： In one embodiment, a wireless device for a wireless data communication system including the wireless device and a base station. The base station includes a plurality of first groups and a signal-processing unit. Each first group includes a receiver and at least one antenna connected to the receiver. The signal-processing unit includes memory and a processor adapted to process signals received by the first groups using a Maximum Likelihood Detection (MLD) method. The wireless device includes a plurality of second groups, each second group adapted to transmit a wireless signal to at least one first group via a corresponding communication channel. Each second group further includes a transmitter and at least one antenna connected to the transmitter. The signal-processing unit is adapted to store, in the memory, information corresponding to one or more transfer functions, each transfer function corresponding to transmission of a wireless signal from an antenna of the second groups to an antenna of the first groups. The transmitters and receivers are adapted to operate at essentially the same frequency or frequency band. Two or more of the communication channels are generated simultaneously. Each transmitter is adapted to modulate an information signal on a radio-frequency signal according to a Quadrature Amplitude Modulation (QAM) method to transmit QAM symbols. Each receiver is adapted to demodulate information signals from a received radio-frequency signal according to the QAM method.
摘要翻译：在一个实施例中，一种用于包括无线设备和基站的无线数据通信系统的无线设备。基站包括多个第一组和信号处理单元。每个第一组包括接收器和连接到接收器的至少一个天线。信号处理单元包括存储器和适于使用最大似然检测（MLD）方法处理由第一组接收的信号的处理器。无线设备包括多个第二组，每个第二组适于经由相应的通信信道将无线信号发送到至少一个第一组。每个第二组还包括发射机和连接到发射机的至少一个天线。信号处理单元适于在存储器中存储对应于一个或多个传送函数的信息，对应于无线信号从第二组的天线到第一组的天线的传输的每个传递函数。发射机和接收机适于在基本上相同的频率或频带上操作。同时产生两个或多个通信信道。每个发射机适于根据正交幅度调制（QAM）方法对射频信号上的信息信号进行调制，以传输QAM符号。每个接收机适于根据QAM方法从接收的射频信号中解调信息信号。

8. 发明授权

US07463589B2 Wireless LAN with enhanced carrier sensing 有权
标题翻译：无线局域网具有增强的载波侦听功能
公开(公告)号：US07463589B2
公开(公告)日：2008-12-09
申请号：US09919051
申请日：2001-07-31
申请人： Wilhelmus Diepstraten , Adriaan Kamerman , Kai Roland Kriedte , D. J. Richard Van Nee
发明人： Wilhelmus Diepstraten , Adriaan Kamerman , Kai Roland Kriedte , D. J. Richard Van Nee
IPC分类号： H04J1/16 , H04J3/14 , H04J1/00 , H04L12/26
CPC分类号： H04W74/0808 , H04L27/2602 , H04W84/12 , H04W88/06
摘要： Medium access control device (301) for a mobile network station (3, 4, 5) or an access point (AP1) in a wireless local area network (1), having controlling means (302), processing means (303) and transmitting and receiving means (304); the controlling means (302) being arranged to control transmission and reception of radio frequency data signals containing data symbols; the transmitting and receiving means (304) being arranged for transmission and reception of electromagnetic data signals; the processing means (303) being arranged for detecting a first signal portion and a second signal portion in the received data signal, the second signal portion following the first signal portion and having a signal coding differing from a signal coding of the first signal portion.
摘要翻译：一种用于无线局域网（1）中的移动网络站（3,4,5）或接入点（AP1）的媒体接入控制设备（301），具有控制装置（302），处理装置（303）和传输和接收装置（304）。控制装置（302）被布置成控制包含数据符号的射频数据信号的发送和接收; 发送和接收装置（304）被布置用于发送和接收电磁数据信号; 处理装置（303）被布置用于检测接收数据信号中的第一信号部分和第二信号部分，第二信号部分跟随第一信号部分并且具有与第一信号部分的信号编码不同的信号编码。

9. 发明授权

US08111607B2 Frequency division multiplexing system with selectable rate 有权
标题翻译：频分复用系统，可选速率
公开(公告)号：US08111607B2
公开(公告)日：2012-02-07
申请号：US11156140
申请日：2005-06-17
申请人： D. J. Richard Van Nee
发明人： D. J. Richard Van Nee
IPC分类号： H04J11/00
CPC分类号： H04L27/2602 , H04L1/0002 , H04L5/1446 , H04L25/08 , H04L27/2605 , H04L27/2607 , H04L27/2647 , H04L27/2662
摘要： An OFDM system uses a normal mode which has a symbol length T, a guard time TG and a set of N sub-carriers, which are orthogonal over the time T, and one or more fallback modes which have symbol lengths KT and guard times KTG where K is an integer greater than unity. The same set of N sub-carriers is used for the fallback modes as for the normal mode. Since the same set of sub-carriers is used, the overall bandwidth is substantially constant, so alias filtering does not need to be adaptive. The Fourier transform operations are the same as for the normal mode. Thus fallback modes are provided with little hardware cost. In the fallback modes the increased guard time provides better delay spread tolerance and the increased symbol length provides improved signal to noise performance, and thus increased range, at the cost of reduced data rate.
摘要翻译： OFDM系统使用具有在时间T上是正交的符号长度T，保护时间TG和一组N个子载波的正常模式，以及具有符号长度KT和保护时间KTG的一个或多个回退模式其中K是大于1的整数。相同的一组N个子载波用于回退模式，与正常模式一样。由于使用相同的子载波集合，所以总带宽基本上是恒定的，所以别名滤波不需要是自适应的。傅里叶变换操作与正常模式相同。因此，回退模式的硬件成本很低。在回退模式中，增加的保护时间提供更好的延迟扩展容限，并且增加的符号长度提供改善的信噪比性能，并因此提高范围，以降低的数据速率为代价。

10. 发明授权

US08050344B2 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：US08050344B2
公开(公告)日：2011-11-01
申请号：US12502300
申请日：2009-07-14
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： H04L27/28
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。

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