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公开(公告)号：US07106709B2
公开(公告)日：2006-09-12
申请号：US09994944
申请日：2001-11-28
申请人： Stefan Davidsson , Mathias Pauli , Peter Schramm , Fabian Wenger , Udo Wachsmann , Roger Walther
发明人： Stefan Davidsson , Mathias Pauli , Peter Schramm , Fabian Wenger , Udo Wachsmann , Roger Walther
CPC分类号： H04L27/2657 , H04L7/027 , H04L7/04 , H04L27/2602 , H04L27/2662 , H04L27/2675 , H04L27/2679 , H04L27/2695 , H04L2027/0028 , H04L2027/0095
摘要： A radio receiver system (30) comprises a radio receiver (41), a receiver sample clock (60), which is used for sampling a modulated base-band signal; and a timing correction unit (100). The timing correction unit (100) performs, in the frequency domain, a timing drift compensation between a transmitter sample clock (66) and the receiver sample clock (60). In one example context of implementation, the plural modulated radio frequency carriers have been modulated using Orthogonal Frequency Division Multiplexing (OFDM).
摘要翻译： 无线电接收机系统（30）包括无线电接收机（41），接收机采样时钟（60），用于对已调制的基带信号进行采样; 和定时校正单元（100）。 定时校正单元（100）在频域中执行发射机采样时钟（66）和接收机采样时钟（60）之间的定时漂移补偿。 在一个实施例的上下文中，已经使用正交频分复用（OFDM）调制了多个调制的射频载波。
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公开(公告)号：US07324599B2
公开(公告)日：2008-01-29
申请号：US10751120
申请日：2004-01-05
申请人： Georg Frank , Mathias Pauli , Udo Wachsmann , Peter Schramm
发明人： Georg Frank , Mathias Pauli , Udo Wachsmann , Peter Schramm
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L27/2679
摘要： In order to correct frequency deviations of signals in a multicarrier system, such as a OFDM-system, the present invention provides a frequency tracker and a method to operate the same. The frequency tracker is based on a decision directed digital phase locked loop exhibiting a predictive character. On the basis of an estimated phase offset for a received signal (signal component, signal symbol) a predicted phase offset is calculated and applied to the signal (signal component, signal symbol). Further, received signals (signal components, signal symbols) are sampled and for each sample a sample phase offset to be corrected is calculated in dependence to the related estimated phase offset to incorporate the predictive character. In particular, the predicted sample phase offsets are calculated as a function of a corresponding predicted phase offset and a measure being indicative of a distance, in the time domain, between a corresponding phase reference point for the predicted phase offset and a phase reference point defined for a specific part of the received signal, preferably for a preceding preamble signal.
摘要翻译： 为了校正诸如OFDM系统的多载波系统中的信号的频率偏差，本发明提供一种频率跟踪器及其操作方法。 频率跟踪器基于呈现预测字符的决策指向的数字锁相环。 基于接收信号（信号分量，信号符号）的估计相位偏移，计算预测相位偏移并将其施加到信号（信号分量，信号符号）。 此外，接收到的信号（信号分量，信号符号）被采样，并且对于每个采样，根据相关的估计相位偏移来计算要校正的采样相位偏移以并入预测字符。 特别地，预测的采样相位偏移作为相应的预测相位偏移的函数计算，并且指示在时域中在预测相位偏移的相应相位参考点和定义的相位参考点之间的距离的度量 对于接收信号的特定部分，优选地用于前一个前导信号。
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公开(公告)号：US07324600B2
公开(公告)日：2008-01-29
申请号：US10774702
申请日：2004-02-10
申请人： Mathias Pauli , Udo Wachsmann
发明人： Mathias Pauli , Udo Wachsmann
IPC分类号： H04L27/28
CPC分类号： H04L25/0204 , H04L1/0618 , H04L5/0023 , H04L5/0048 , H04L27/2662
摘要： A method and a stage for estimating channel coefficients in a multi carrier system operating in accordance with a block-code based transmit diversity scheme, in which a data content of a code matrix is multiplexed in a frequency domain are described. The method comprises determining a phase ramp in the frequency domain or an equivalent thereof in the time domain, the phase ramp or the equivalent thereof being comprised within a receive signal after timing synchronization, processing the receive signal to remove the phase ramp or the equivalent thereof and estimating the channel coefficients on the basis of the processed receive signal.
摘要翻译： 描述了一种用于估计在根据基于块码的发射分集方案操作的多载波系统中的信道系数的方法和级，其中码矩阵的数据内容在频域中被复用。 该方法包括在定时同步之后确定频域中的相位斜坡或其等效线，相位斜坡或其等效线包括在定时同步之后的接收信号中，处理接收信号以去除相位斜坡或其等效物 以及基于所处理的接收信号来估计信道系数。
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公开(公告)号：US07477697B2
公开(公告)日：2009-01-13
申请号：US10471825
申请日：2002-03-01
申请人： Mathias Pauli , Eric Sachse , Udo Wachsmann
发明人： Mathias Pauli , Eric Sachse , Udo Wachsmann
CPC分类号： H04L27/2602 , H04B7/0669 , H04B7/0671 , H04B7/12 , H04L1/0001 , H04L1/04 , H04L1/0618 , H04L5/023
摘要： The invention relates to a method of multiplexing data words in a multicarrier transmit diversity system. The method comprises the step of generating a plurality of data blocks, each data block comprising data words and each data word containing data symbols derived from a data signal, the step of determining for one or more data blocks in dependence on at least one transmission constraint if the data words of said one or more data blocks are to be multiplexed in the time domain or in the frequency domain and the step of multiplexing the data words of the data blocks in accordance with the determination result.
摘要翻译： 本发明涉及在多载波发射分集系统中复用数据字的方法。 该方法包括生成多个数据块的步骤，每个数据块包括数据字和包含从数据信号导出的数据符号的每个数据字，根据至少一个传输约束确定一个或多个数据块的步骤 如果所述一个或多个数据块的数据字将在时域或频域中复用，以及根据确定结果复用数据块的数据字的步骤。
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公开(公告)号：US07231183B2
公开(公告)日：2007-06-12
申请号：US10682280
申请日：2003-10-09
IPC分类号： H04B17/00
CPC分类号： H04L1/206 , H04L1/0001
摘要： A method and a receiver for determining the quality of a wireless communications link are described. The link quality is determined on the basis of an encoded signal that is transmitted via the communications link and that includes at least two signal portions experiencing different states of one or more transmission channels. The method comprises the steps of providing individual channel quality values for the different channels and determining a quality measure indicative of the link quality by averaging the individual channel quality values in the exponential domain.
摘要翻译： 描述了用于确定无线通信链路的质量的方法和接收器。 基于通过通信链路发送的编码信号确定链路质量，并且包括经历一个或多个传输信道的不同状态的至少两个信号部分。 该方法包括以下步骤：为不同的信道提供各个信道质量值，并通过对指数域中的各个信道质量值进行平均来确定指示链路质量的质量度量。
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6.发明申请Method and device for controlling frequency selection within a wireless communication system 有权用于控制无线通信系统内的频率选择的方法和装置公开(公告)号：US20050192016A1
公开(公告)日：2005-09-01
申请号：US10674791
申请日：2003-10-01
申请人： Gerd Zimmermann , Mathias Pauli , Peter Schramm , Jamshid Khun-Jush , Lennart Gafvels , Goran Malmgren
发明人： Gerd Zimmermann , Mathias Pauli , Peter Schramm , Jamshid Khun-Jush , Lennart Gafvels , Goran Malmgren
CPC分类号： H04W16/14 , H04K3/226 , H04K3/822 , H04K2203/18 , H04W24/00
摘要： The invention relates to a method and a device for controlling frequency selection within a wireless communication system in response to radar-like interference signals. The method comprises continuously or quasi-continuously monitoring and assessing a plurality of frequencies with respect to a radar-like interference signal and allocating a quality parameter to each assessed frequency, the quality parameter indicating the probability that the frequency is occupied. The method further comprises selecting one or more frequencies in dependence on the allocated quality parameters and subsequent frequency monitoring.
摘要翻译： 本发明涉及一种用于响应于类似雷达的干扰信号来控制无线通信系统内的频率选择的方法和装置。 该方法包括连续或准连续地监测和评估相对于类似雷达的干扰信号的多个频率，并且将质量参数分配给每个评估的频率，质量参数指示频率被占用的概率。 该方法还包括根据所分配的质量参数和随后的频率监测来选择一个或多个频率。
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公开(公告)号：US07406051B2
公开(公告)日：2008-07-29
申请号：US10497205
申请日：2001-11-30
IPC分类号： H04J1/16 , H04L12/413 , H04B1/00
CPC分类号： H04W16/14 , H04K3/224 , H04K3/226 , H04K3/822 , H04K2203/18 , H04L1/20 , H04W24/00 , H04W52/287 , H04W74/08
摘要： Interference Measurements in a Wireless Communications SystemA method and a transmitting unit for performing an interference measurement in a multiple access wireless communications system utilizing a carrier sensing technique is described. In accordance with the carrier sensing technique, it is monitored during a sensing period (Tmin) if a carrier is idle. A continuous or quasi-continuous interference measurement is performed on the carrier during a measurement period (TM) which is typically longer than the sensing period (Tmin). While performing the interference measurement, pulses are transmitted on the carrier such that an interval between the end of a pulse and the beginning of the next pulse is typically shorter than the sensing period (Tmin). The interference measurements preferably relate to detection of interference from radar signals or radar like signals.
摘要翻译： 无线通信系统中的干扰测量描述了一种利用载波检测技术在多址无线通信系统中进行干扰测量的方法和发送单元。 根据载波检测技术，如果载波空闲，则在感测周期（T分钟）期间监视它。 在通常长于感测周期（T min min）的测量周期（T SUB M）期间，对载波执行连续或准连续的干涉测量。 在执行干扰测量时，在载体上传送脉冲，使得脉冲的结束与下一个脉冲的开始之间的间隔通常短于感测周期（T min min）。 干扰测量优选地涉及来自雷达信号或类雷达信号的干扰的检测。
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8.发明授权Method and device for controlling frequency selection within a wireless communication system 有权用于控制无线通信系统内的频率选择的方法和装置公开(公告)号：US07496368B2
公开(公告)日：2009-02-24
申请号：US10674791
申请日：2003-10-01
申请人： Gerd Zimmermann , Mathias Pauli , Peter Schramm , Jamshid Khun-Jush , Lennart Gafvels , Göran Malmgren
发明人： Gerd Zimmermann , Mathias Pauli , Peter Schramm , Jamshid Khun-Jush , Lennart Gafvels , Göran Malmgren
IPC分类号： H04Q7/20
CPC分类号： H04W16/14 , H04K3/226 , H04K3/822 , H04K2203/18 , H04W24/00
摘要： The invention relates to a method and a device for controlling frequency selection within a wireless communication system in response to radar-like interference signals. The method comprises continuously or quasi-continuously monitoring and assessing a plurality of frequencies with respect to a radar-like interference signal and allocating a quality parameter to each assessed frequency, the quality parameter indicating the probability that the frequency is occupied. The method further comprises selecting one or more frequencies in dependence on the allocated quality parameters and subsequent frequency monitoring.
摘要翻译： 本发明涉及一种用于响应于类似雷达的干扰信号来控制无线通信系统内的频率选择的方法和装置。 该方法包括连续或准连续地监测和评估相对于类似雷达的干扰信号的多个频率，并且将质量参数分配给每个评估的频率，质量参数指示频率被占用的概率。 该方法还包括根据所分配的质量参数和随后的频率监测来选择一个或多个频率。
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公开(公告)号：US07333449B2
公开(公告)日：2008-02-19
申请号：US10432519
申请日：2001-11-27
申请人： Gerd Zimmermann , Hui Li , Fabian Wenger , Jan Lindskog , Mathias Pauli
发明人： Gerd Zimmermann , Hui Li , Fabian Wenger , Jan Lindskog , Mathias Pauli
IPC分类号： H04B7/212
CPC分类号： H04L1/007 , H04L1/0003 , H04L1/0009 , H04L1/08
摘要： In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (=the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet.
摘要翻译： 在分组传输系统中，特别是无线传输系统，其中数据以不同的错误保护级别以分组传输，并且一个分组（=后续分组）的错误保护级别可能不同于前一分组的错误保护级别而不提供 在前一个分组和后续分组使用不同的错误保护级别的情况下，所述前一个和所述后续分组之间的代码终止可能会降级。 本发明在这些情况下提出在前一个分组之间插入补充分组，由此补充分组的错误保护等级高于由前一个或后续分组使用的最低的错误保护等级。
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10.发明授权公开(公告)号：US07024188B2
公开(公告)日：2006-04-04
申请号：US10489707
申请日：2002-09-13
申请人： Jamshid Khun-Jush , Peter Schramm , Jan Lindskog , Stefan Rommer , Mathias Pauli , Gerd Zimmermann , Fredrik Johansson , Anders Ranheim , Peter Larsson
发明人： Jamshid Khun-Jush , Peter Schramm , Jan Lindskog , Stefan Rommer , Mathias Pauli , Gerd Zimmermann , Fredrik Johansson , Anders Ranheim , Peter Larsson
摘要： The invention discloses a method for use in a wireless communications system with a plurality of broadcasting nodes, comprising the step of enabling one node in the system to function as a central node in said system and letting said node enable measurements on at least one frequency in a frequency band used by the system. Said measurements are carried out to detect if said at least one frequency is being utilized by a transmitter foreign to the system. Preferably, the measurement is enabled by means of the node transmitting a message to other nodes in the system, said message being a message pre-defined within the system as a message prohibiting all nodes from transmitting during a certain interval, said message being transmitted after the system has been detected by the node to be silent during a predefined interval between frame transmissions from the nodes in the system.
摘要翻译： 本发明公开了一种在具有多个广播节点的无线通信系统中使用的方法，包括使得系统中的一个节点能够用作所述系统中的中心节点并使所述节点能够在至少一个频率上进行测量的步骤 系统使用的频段。 执行所述测量以检测所述至少一个频率是否由系统外部的发射机利用。 优选地，通过节点向系统中的其他节点发送消息来实现测量，所述消息是系统内预定义的消息，作为禁止所有节点在一定间隔期间发送的消息，所述消息在 在系统中的节点的帧传输之间的预定义间隔期间，节点已经检测到系统静音。
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