公开(公告)号：US08615033B2

公开(公告)日：2013-12-24

申请号：US12346476

申请日：2008-12-30

申请人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

发明人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC分类号： H04B1/38

CPC分类号： H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

摘要： A method for controlling a transmission rate of at least one transceiver, the transceiver including a transmitter and a receiver, includes: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, and modifying a transmission rate of the transmitter over a wireless communication channel as a function of the signal quality characteristic. The step of modifying the transmission rate over the wireless communication channel includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the transmission rate; maintaining the transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the transmission rate when the signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher transmission rates.

摘要翻译： 一种用于控制至少一个收发器的传输速率的方法，所述收发器包括发射机和接收机，包括：通过测量一个或多个参考星座点与一个参考星座点之间的差异来确定与在接收机处接收到的信号相对应的信号质量特性 或更多的接收到的星座点，以及作为信号质量特性的函数，通过无线通信信道修改发射机的传输速率。 通过无线通信信道修改传输速率的步骤包括：分别对应于传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 当测量的信号质量特性在下限阈值和上限阈值之间时，保持传输速率; 以及当信号质量特性小于与一个或多个相应较高传输速率相关联的一个或多个下限阈值时，增加传输速率。

公开(公告)号：US20110135088A1

公开(公告)日：2011-06-09

申请号：US13058556

申请日：2009-08-06

申请人： Philip Andrew Rudland ,  Bas Driesen ,  Philip Anthony Jamieson

发明人： Philip Andrew Rudland ,  Bas Driesen ,  Philip Anthony Jamieson

IPC分类号： H04L9/00

CPC分类号： H04L9/0841

摘要： The present invention relates to cryptographic secret key distribution, wherein a value for a number of iterations can be individually set, so that the number of messages to be exchanged during generating a cryptographic secret keycan be varied based on the set value of the iteration number.

摘要翻译： 本发明涉及密码秘密密钥分发，其中可以单独设置迭代次数的值，从而可以基于迭代次数的设定值来改变在生成加密秘密密钥期间要交换的消息数量。

公开(公告)号：US20060018247A1

公开(公告)日：2006-01-26

申请号：US10896759

申请日：2004-07-22

申请人： Bas Driesen ,  Allert Zelst

发明人： Bas Driesen ,  Allert Zelst

IPC分类号： H04J11/00

CPC分类号： H04L1/0071 ,  H04L1/04 ,  H04L1/06 ,  H04L27/2601

摘要： Methods and systems are disclosed for space interleaved communication of data in a multiple antenna communication system. Data is interleaved over space by interleaving the data over a plurality of transmit branches in the multiple antenna system. The disclosed spatial interleaving increases the performance gains resulting from the spatial transmit diversity of the multiple antenna communication system. Spatial interleaving can be performed, for example, over the bits before the bits are interleaved over frequency. In another variation, spatial interleaving is performed over the symbols after the bits are mapped to symbols.

摘要翻译： 公开了用于多天线通信系统中的数据的空间交织通信的方法和系统。 通过在多天线系统中的多个发射分支上交织数据，数据在空间上进行交织。 所公开的空间交织增加了由多天线通信系统的空间发射分集产生的性能增益。 空间交织可以例如通过频率上的比特交错之前的比特来执行。 在另一个实施例中，在比特被映射到符号之后，在符号上执行空间交织。

公开(公告)号：US08542828B2

公开(公告)日：2013-09-24

申请号：US13058556

申请日：2009-08-06

申请人： Philip Andrew Rudland ,  Bas Driesen ,  Philip Anthony Jamieson

发明人： Philip Andrew Rudland ,  Bas Driesen ,  Philip Anthony Jamieson

IPC分类号： H04L9/00

CPC分类号： H04L9/0841

摘要： The present invention relates to cryptographic secret key distribution, wherein a value for a number of iterations can be individually set, so that the number of messages to be exchanged during generating a cryptographic secret key can be varied based on the set value of the iteration number.

摘要翻译： 本发明涉及密码秘密密钥分发，其中可以单独设置迭代次数的值，使得在生成加密秘密密钥期间要交换的消息的数量可以基于迭代次数的设定值而变化 。

公开(公告)号：US20110007727A1

公开(公告)日：2011-01-13

申请号：US12922693

申请日：2009-03-11

申请人： Bas Driesen ,  Philip Anthony Jamieson

发明人： Bas Driesen ,  Philip Anthony Jamieson

IPC分类号： H04W84/02

CPC分类号： H04W72/0406 ,  H04W72/0453 ,  H04W84/10

摘要： The present invention relates to a method for a first coordinator operating at a first channel frequency in a wireless personal area network (WPAN), the WPAN further comprising a second coordinator operating a second channel frequency, the method comprising the steps of transmitting a message at a plurality of channel frequencies including the second channel frequency, requesting the second coordinator to change from the second channel frequency to the first channel frequency, and communicating with the second coordinator using the first channel frequency. As discussed above, advantages with the present invention includes that no priority based mechanism is needed due to the fact that the coordinator that initiates (e.g. starts) communication-decides on used frequency. Furthermore, every coordinator is able to have the coordinator it wants to communicate with to change to its decided frequency. The present invention also relates to a corresponding method for a second coordinator, a first and a second coordinator, a system comprising at least a first and a second coordinator, and a corresponding computer program.

摘要翻译： 本发明涉及一种在无线个域网（WPAN）中以第一信道频率工作的第一协调器的方法，所述WPAN还包括操作第二信道频率的第二协调器，所述方法包括以下步骤： 包括第二信道频率的多个信道频率，请求第二协调器从第二信道频率改变到第一信道频率，以及使用第一信道频率与第二协调器进行通信。 如上所述，本发明的优点包括由于启动（例如开始）通信的协调器决定使用频率的事实，不需要基于优先级的机制。 此外，每个协调员都能够让协调者进行沟通，以便改变其决定的频率。 本发明还涉及用于第二协调器，第一和第二协调器，包括至少第一和第二协调器的系统以及对应的计算机程序的相应方法。

公开(公告)号：US20070060073A1

公开(公告)日：2007-03-15

申请号：US10562618

申请日：2004-06-30

申请人： Jan Boer ,  Bas Driesen ,  Tim Schenk ,  Allert Zelst

发明人： Jan Boer ,  Bas Driesen ,  Tim Schenk ,  Allert Zelst

IPC分类号： H04B1/02

CPC分类号： H04L25/0232 ,  H04B7/0413 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04W16/24 ,  H04W16/28

摘要： A method and apparatus are provided for transmitting one or more symbols in a multiple antenna wireless communication system. Subcarriers from one or more symbols are interleaved across a plurality of antennas. The symbols may be, for example, long or short training symbols based on a single-antenna long or short training symbol, respectively, and wherein each subsequent subcarrier from the single-antenna training symbol is positioned in a training symbol for a logically adjacent antenna. One or more additional subcarriers may be inserted in at least one of the plurality of symbols to allow nulled subcarriers to be estimated using an interpolation-based channel estimation technique. The remaining portions of a header, as well as the data sequences of a packet, may also be diagonally loaded.

摘要翻译： 提供一种在多天线无线通信系统中发送一个或多个符号的方法和装置。 来自一个或多个符号的子载波在多个天线之间交织。 符号可以是例如分别基于单天线长或短训练符号的长或短训练符号，并且其中来自单天线训练符号的每个后续子载波被定位在用于逻辑相邻天线的训练符号中 。 可以在多个符号中的至少一个中插入一个或多个附加子载波，以允许使用基于插值的信道估计技术估计零位子载波。 报头的剩余部分以及分组的数据序列也可以对角地加载。

公开(公告)号：US20050013391A1

公开(公告)日：2005-01-20

申请号：US10621862

申请日：2003-07-17

申请人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Kriedte

发明人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Kriedte

IPC分类号： H04J11/00 ,  H04B17/00 ,  H04L1/20 ,  H04L27/06

CPC分类号： H04L1/208 ,  H04L1/20

摘要： In a wireless system including a wireless communication channel, a method for estimating a signal quality of a received signal includes the steps of receiving a signal from the wireless communication channel, the received signal including at least one field that is modulated and encoded in a substantially fixed manner, and generating at least one reference field based, at least in part, on the at least one field and on a channel estimation signal. The channel estimation signal is representative of at least one characteristic of the wireless communication channel. The method further includes the step of generating a signal quality estimate as a function of the at least one field in the received signal and the generated at least one reference field.

摘要翻译： 在包括无线通信信道的无线系统中，用于估计接收信号的信号质量的方法包括以下步骤：从无线通信信道接收信号，所接收的信号包括被实质上被调制和编码的至少一个场 至少部分地基于所述至少一个场和信道估计信号生成至少一个参考场。 信道估计信号表示无线通信信道的至少一个特性。 该方法还包括以下步骤：根据所接收的信号和所生成的至少一个参考场产生作为至少一个场的函数的信号质量估计。

公开(公告)号：US09014498B2

公开(公告)日：2015-04-21

申请号：US13377901

申请日：2010-06-08

申请人： Renatus Josephus Van Der Vleuten ,  Bas Driesen

发明人： Renatus Josephus Van Der Vleuten ,  Bas Driesen

IPC分类号： G06K9/36 ,  H04N19/129 ,  H04N19/64 ,  H04N19/63

CPC分类号： H04N19/129 ,  H04N19/63 ,  H04N19/647

摘要： The invention relates to a bit-plane coding method of signals, for example, an image or video signal in the DCT transform domain. The bit planes of the DCT blocks are transmitted bit-plane by bit-plane in order of significance. As each plane contains more signal energy than the lower significant layers together, the resulting bitstream is scalable in the sense that it may be truncated at any position. The later the bitstream is truncated, the smaller the residual error when the image is reconstructed. For each bit plane, a zone or partition of bit plane is created that encompasses all the non-zero bits of the DCT coefficients in that bit plane. The partition is created in accordance with a strategy that is selected from a number of options in dependence of the content of the overall signal and/or the actual bit plane. A different zoning strategy may be used for natural images than for graphic content, and the strategy may vary from bitplane to bitplane. The form as well as other properties such as size of each partition can thus be optimally adapted to the content. Two-dimensional rectangular zones and one-dimensional zigzag scan zones may be mixed within an image or even within a DCT block. The selected zone creating strategy is embedded in the bitstream, along with the DCT coefficient bits in the actual partition.

摘要翻译： 本发明涉及DCT变换域中的信号例如图像或视频信号的位平面编码方法。 DCT块的位平面以位平面顺序传输。 由于每个平面包含的信号能量比下层有效层更多，所以产生的比特流可以在任何位置被截断的意义上是可缩放的。 比特流越晚被截断，重建图像时的残差越小。 对于每个位平面，创建一个位平面的区域或分区，其包含该位平面中DCT系数的所有非零位。 根据根据总体信号和/或实际位平面的内容从多个选项中选择的策略来创建分区。 对于自然图像而言，与图形内容不同的分区策略可能会被使用，并且策略可能会因位平面而异。 因此，可以将形式以及其他属性（例如每个分区的大小）最佳地适应于内容。 二维矩形区域和一维之字形扫描区域可以在图像内或甚至在DCT块内混合。 选择的区域创建策略与实际分区中的DCT系数位一起嵌入比特流中。

公开(公告)号：US08451815B2

公开(公告)日：2013-05-28

申请号：US12922693

申请日：2009-03-11

申请人： Bas Driesen ,  Philip Anthony Jamieson

发明人： Bas Driesen ,  Philip Anthony Jamieson

IPC分类号： H04W4/00

CPC分类号： H04W72/0406 ,  H04W72/0453 ,  H04W84/10

摘要： The present invention relates to a method for a first coordinator operating at a first channel frequency in a wireless personal area network (WPAN), the WPAN further comprising a second coordinator operating a second channel frequency, the method comprising the steps of transmitting a message at a plurality of channel frequencies including the second channel frequency, requesting the second coordinator to change from the second channel frequency to the first channel frequency, and communicating with the second coordinator using the first channel frequency. As discussed above, advantages with the present invention includes that no priority based mechanism is needed due to the fact that the coordinator that initiates (e.g. starts) communication-decides on used frequency. Furthermore, every coordinator is able to have the coordinator it wants to communicate with to change to its decided frequency. The present invention also relates to a corresponding method for a second coordinator, a first and a second coordinator, a system comprising at least a first and a second coordinator, and a corresponding computer program.

摘要翻译： 本发明涉及一种在无线个域网（WPAN）中以第一信道频率工作的第一协调器的方法，所述WPAN还包括操作第二信道频率的第二协调器，所述方法包括以下步骤： 包括第二信道频率的多个信道频率，请求第二协调器从第二信道频率改变到第一信道频率，以及使用第一信道频率与第二协调器进行通信。 如上所述，本发明的优点包括由于启动（例如开始）通信的协调器决定使用频率的事实，不需要基于优先级的机制。 此外，每个协调员都能够让协调者进行沟通，以便改变其决定的频率。 本发明还涉及用于第二协调器，第一和第二协调器，包括至少第一和第二协调器的系统以及对应的计算机程序的相应方法。

公开(公告)号：US08014267B2

公开(公告)日：2011-09-06

申请号：US10562619

申请日：2004-06-30

申请人： Jan Boer ,  Bas Driesen ,  Tim Schenk ,  Allert Van Zelst

发明人： Jan Boer ,  Bas Driesen ,  Tim Schenk ,  Allert Van Zelst

IPC分类号： H04J11/00 ,  H04L27/04 ,  H03C7/02

CPC分类号： H04B7/0413 ,  H04B7/0684 ,  H04L1/06 ,  H04L25/0202 ,  H04L25/0226 ,  H04L27/2613

摘要： A method and apparatus are disclosed for transmitting symbols in a multiple antenna wireless communication system, such that the symbols can be interpreted by a lower order receiver (i.e., a receiver having a fewer number of antennas than the transmitter). For example, subcarriers from one or more symbols can be transmitted such that each of the subcarriers are active on only one of the antennas at a given time. In one implementation, the subcarriers are diagonally loaded across logically adjacent antennas. The symbols can include one or more long training symbols and optionally a SIGNAL field that indicates a duration that a receiver should defer until a subsequent transmission. In this manner, a transmitter in accordance with the present invention may be backwards compatible with a lower order receiver and a lower order receiver can interpret the transmitted symbols or defer for an appropriate duration.

摘要翻译： 公开了用于在多天线无线通信系统中发送符号的方法和装置，使得符号可以由较低阶接收机（即，具有比发射机更少数量的天线的接收机）来解释。 例如，可以发送来自一个或多个符号的子载波，使得每个子载波在给定时间仅在一个天线上是有效的。 在一个实现中，副载波在逻辑上相邻的天线之间被对角地加载。 符号可以包括一个或多个长训练符号和可选的SIGNAL字段，其指示接收机延迟直到后续传输的持续时间。 以这种方式，根据本发明的发射机可以与较低阶接收机向后兼容，而低阶接收机可以解释所发送的符号或延迟适当的持续时间。