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31. 发明申请

US20100296475A1 METHOD AND APPARATUS FOR DETERMINING AN APPROPRIATE LINK PATH IN A MULTI-HOP COMMUNICATION SYSTEM 有权
标题翻译：用于确定多通信通信系统中适当链路路径的方法和装置
公开(公告)号：US20100296475A1
公开(公告)日：2010-11-25
申请号：US12848250
申请日：2010-08-02
申请人： Eugene Visotsky , Kevin L. Baum , Mark C. Cudak , Phillippe J. Sartori
发明人： Eugene Visotsky , Kevin L. Baum , Mark C. Cudak , Phillippe J. Sartori
IPC分类号： H04W40/12
CPC分类号： H04W72/085 , H04B7/2606 , H04W16/26 , H04W84/047
摘要： A determination of link quality (CSR) is made from the subscriber station to a relay station. A determination of link quality (CRB) is made from the relay station to the base station, and a determination of link quality (CSB) is made from the subscriber station to the base station. A quality of a first link path from the subscriber station to the base station that passes through the relay station is determined based on at least the link qualities (Csr, Crb). A quality of a second link path from the subscriber station to the base station that does not pass through the relay station is determined based on at least the link quality (Csb). Finally, a determination is made whether to utilize the first link path or the second link path from the subscriber station to the base station based on at least the quality of the first and second link paths.
摘要翻译：从用户站到中继站的链路质量（CSR）的确定。从中继站到基站进行链路质量（CRB）的确定，并从用户站到基站进行链路质量（CSB）的确定。至少基于链路质量（Csr，Crb）确定从用户站到通过中继站的基站的第一链路路径的质量。至少基于链路质量（Csb）来确定从用户站到基站不通过中继站的第二链路路径的质量。最后，基于至少第一和第二链路路径的质量，确定是否利用从用户站到基站的第一链路路径或第二链路路径。

32. 发明申请

US20090238303A1 METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK 有权
标题翻译：使用通用引导和模拟反馈的基于代码库的闭环MIMO的方法和系统
公开(公告)号：US20090238303A1
公开(公告)日：2009-09-24
申请号：US12405307
申请日：2009-03-17
申请人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
发明人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0617 , H04B7/0665 , H04L25/0204 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/03808
摘要： A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.
摘要翻译：公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。移动台可以使用反馈信道向基站发送探测波形，从基站接收来自发送探测波形的码本的前馈信道，从基站接收通信的接收机和处理器检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。基站处理探测波形以确定子载波组上的码本权重。此外，基站将波束形成的有效载荷和广播导频发送到移动台。

33. 发明授权

US07508842B2 Method and apparatus for pilot signal transmission 有权
标题翻译：导频信号传输的方法和装置
公开(公告)号：US07508842B2
公开(公告)日：2009-03-24
申请号：US11207457
申请日：2005-08-18
申请人： Kevin L. Baum , Brian K. Classon , Vijay Nangia
发明人： Kevin L. Baum , Brian K. Classon , Vijay Nangia
IPC分类号： H04J3/16 , H04J3/22 , H04B3/10
CPC分类号： H04L5/0048 , H04L5/0023 , H04L25/0226
摘要： A method and apparatus for pilot signal transmission is disclosed herein. In particular, a pilot transmission scheme is utilized where pilot sub-carrier bandwidth differs from data sub-carrier bandwidth. Because some user's data sub-carriers will no longer have the user's pilot sub-carriers adjacent to them, the set, or pattern of sub-carriers used by the pilot blocks changes at least once in a burst. Changing the pilot block pattern (the set of occupied pilot block sub-carriers) at least once in the burst serves to increase the frequency proximity of occupied data sub-carriers to occupied pilot sub-carriers in the burst.
摘要翻译：本文公开了一种用于导频信号传输的方法和装置。特别地，利用导频子载波带宽与数据副载波带宽不同的导频传输方案。因为一些用户的数据子载波将不再具有与它们相邻的用户的导频子载波，导频块使用的子载波的集合或模式在突发中至少改变一次。在突发中至少改变一次导频块模式（所占用的导频块子载波集合）用于将占用的数据子载波的频率接近度增加到突发中的占用导频子载波。

34. 发明授权

US06999467B2 Method and apparatus for transmission and reception within an OFDM communication system 有权
标题翻译：用于OFDM通信系统内的发送和接收的方法和装置
公开(公告)号：US06999467B2
公开(公告)日：2006-02-14
申请号：US10628680
申请日：2003-07-28
申请人： Thomas P. Krauss , Kevin L. Baum , Vijay Nangia
发明人： Thomas P. Krauss , Kevin L. Baum , Vijay Nangia
IPC分类号： H04B7/216 , H04J11/00
CPC分类号： H04L5/0021 , H04L5/0048 , H04L25/0202
摘要： A staggered spread OFCDM scheme is utilized that improves channel estimation. In a first embodiment, each chip stream is time shifted by a predetermined amount and then transmitted on a predetermined subcarrier. This results in time-spread symbols being staggered (time-offset) on different subcarriers allowing for more frequent sampling of the channel. In a second embodiment a staggered spreading approach is applied in the frequency dimension to improve the performance of a system with spreading in the frequency dimension.
摘要翻译：利用交错的扩展OFCDM方案来改进信道估计。在第一实施例中，每个芯片流被时移一预定量，然后在预定的子载波上传输。这导致时间扩展符号在不同子载波上交错（时间偏移），允许更频繁地对信道进行采样。在第二实施例中，在频率维度中应用交错扩展方法以改善在频率维度上扩展的系统的性能。

35. 发明授权

US06959050B2 Method and apparatus for synchronizing an OFDM signal 有权
标题翻译： OFDM信号同步的方法和装置
公开(公告)号：US06959050B2
公开(公告)日：2005-10-25
申请号：US09882840
申请日：2001-06-15
申请人： Kevin L. Baum , Nikhil S. Nadgauda
发明人： Kevin L. Baum , Nikhil S. Nadgauda
IPC分类号： H04L7/06 , H04L27/00 , H04L27/26 , H04L27/14 , H04L27/06
CPC分类号： H04L27/2662 , H04L7/06 , H04L27/2659 , H04L27/266 , H04L27/2675 , H04L27/2679 , H04L2027/0036
摘要： An apparatus (300) for and method of synchronizing OFDM signals utilizes a single baud to provide synchronization in time, frequency, and per-subcarrier rotation (201). Timing and fractional subcarrier frequency synchronization may be obtained from either a known or unknown (e.g., data symbol) baud having known symmetry properties. Because all three synchronization tasks may be accomplished utilizing a single sync baud, the present invention is spectrally efficient. A differential correlation metric is utilized to efficiently provide integer subcarrier frequency synchronization and per-subcarrier rotation synchronization.
摘要翻译：用于OFDM信号同步的方法和方法利用一个波特率来提供时间，频率和每个副载波的同步（201）。定时和分数子载波频率同步可以从具有已知对称性质的已知或未知（例如，数据符号）波特获得。因为可以使用单个同步波特率来实现所有三个同步任务，所以本发明是光谱效率的。利用差分相关度量来有效地提供整体子载波频率同步和每子载波旋转同步。

36. 发明授权

US5740205A Apparatus and method for maximizing frequency offset tracking performance in a digital receiver 失效
标题翻译：用于使数字接收机中的频偏跟踪性能最大化的装置和方法
公开(公告)号：US5740205A
公开(公告)日：1998-04-14
申请号：US767173
申请日：1996-12-16
申请人： Kevin L. Baum , David Paul Gurney , Stephen Leigh Kuffner
发明人： Kevin L. Baum , David Paul Gurney , Stephen Leigh Kuffner
IPC分类号： H03J7/06 , H04L27/06
CPC分类号： H03J7/065
摘要： An automatic frequency control loop structure utilizes a dual selection automatic frequency control unit which is coupled to a differential phase unit and a coherent phase unit to provide a frequency corrected received signal output for efficient tracking of frequency offset drift; and a much lower probability of loss of automatic frequency control loop lock. Thus, a signal from a coherent carrier recovery process provides additional benefit by utilization in adjusting frequency offset tracking performance.
摘要翻译：自动频率控制环路结构利用双选择自动频率控制单元，其耦合到差分相位单元和相干相位单元，以提供频率校正的接收信号输出，用于有效跟踪频偏漂移; 并且自动频率控制回路锁定的丢失概率要低得多。因此，来自相干载波恢复过程的信号通过利用调整频偏跟踪性能提供额外的益处。

37. 发明授权

US5465412A Apparatus and method for determining a point in time for detecting a sampled signal in a receiver 失效
标题翻译：用于确定在接收机中检测采样信号的时间点的装置和方法
公开(公告)号：US5465412A
公开(公告)日：1995-11-07
申请号：US64182
申请日：1993-05-19
申请人： Bruce D. Mueller , Kevin L. Baum
发明人： Bruce D. Mueller , Kevin L. Baum
IPC分类号： H04L27/00 , H04B1/10 , H04L27/38
CPC分类号： H04B1/10
摘要： In a receiver (101) that receives a signal (103) subsequent to transmission thereof by a transmitter on a communication channel, an apparatus and method for determining a point in time for detecting the signal, sampled at multiple points in time, to produce a detected signal (112). The communication channel is modeled, at the multiple points in time, responsive to the sampled signal (110) to produce signal and noise channel models (209) and (204), respectively. Signal and noise values (210) and (205) indicative of the quantity of signal and noise in the signal and noise channel models, respectively, are generated. A sampling point selector (203) selects, from among the multiple points in time, a point in time (111), corresponding to a determined minimum noise value (206) or a determined maximum signal to noise ratio value (213), for detecting the sampled signal (110) to produce the detected signal (112).
摘要翻译：在接收机（101）中，在由通信信道上的发射机发送信号之后接收信号（103），用于确定用于检测在多个时间点采样的信号的时间点的装置和方法，以产生检测信号（112）。在多个时间点上对通信信道进行建模，响应于采样信号（110）分别产生信号和噪声信道模型（209）和（204）。产生分别指示信号和噪声信道模型中的信号和噪声量的信号和噪声值（210）和（205）。采样点选择器（203）从多个时间点中选择对应于确定的最小噪声值（206）或确定的最大信噪比值（213）的时间点（111），用于检测采样信号（110）以产生检测信号（112）。

38. 发明授权

US5363412A Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization 失效
标题翻译：使用滤波相关同步的自适应最大似然序列估计方法和装置
公开(公告)号：US5363412A
公开(公告)日：1994-11-08
申请号：US998063
申请日：1992-12-28
申请人： Robert T. Love , Gerald P. Labedz , Kevin L. Baum
发明人： Robert T. Love , Gerald P. Labedz , Kevin L. Baum
IPC分类号： H04L27/00 , H03H15/00 , H03H17/00 , H03H21/00 , H03M13/23 , H03M13/41 , H04B1/10 , H04B3/04 , H04B7/005 , H04L1/00 , H04L7/00 , H04L25/03 , H04L27/06 , H03M13/12
CPC分类号： H03M13/6331 , H03M13/41 , H04L25/03178 , H04L2025/03547 , H04L25/03292
摘要： A method and apparatus are provided for maximum likelihood sequence estimation. The method and apparatus includes a first maximum likelihood sequence estimator signal path for flat fading and an at least second maximum likelihood sequence estimator signal path for other than flat fading. The method and apparatus for further includes selecting the signal path with a least relative magnitude mean square error.
摘要翻译：提供了用于最大似然序列估计的方法和装置。该方法和装置包括用于平坦衰落的第一最大似然序列估计器信号路径和除平坦衰落以外的至少第二最大似然序列估计器信号路径。该方法和装置还包括以最小相对幅度均方误差选择信号路径。

39. 发明授权

US5263052A Viterbi equalizer for radio receiver 失效
标题翻译：无线电接收机的维特比均衡器
公开(公告)号：US5263052A
公开(公告)日：1993-11-16
申请号：US767961
申请日：1991-09-30
申请人： David E. Borth , Bruce D. Mueller , Kevin L. Baum
发明人： David E. Borth , Bruce D. Mueller , Kevin L. Baum
IPC分类号： H04L25/08 , H03H15/00 , H03H17/00 , H03H21/00 , H03M13/23 , H04B3/04 , H04L25/03 , H04L27/22 , H04L5/12
CPC分类号： H04L27/22 , H04L25/03203 , H04L2025/03401 , H04L25/03197
摘要： A Viterbi equalizer for decoding a .pi./4 DQPSK modulated signal. Because symbol values of adjacent symbols of a .pi./4 DQPSK signal are offset in phase relative to one another, allowable values of succeeding states of a .pi./4 DQPSK signal are four in number. The signal paths of the Viterbi equalizer are thereby limited in number to four allowable next-states, and the Viterbi equalizer is operative to select certain ones of the paths connecting the states at the adjacent time intervals as survivor paths to form maximum likelihood paths thereby.
摘要翻译：用于对pi / 4 DQPSK调制信号进行解码的维特比均衡器。由于pi / 4 DQPSK信号的相邻符号的符号值相对于彼此相位偏移，因此pi / 4 DQPSK信号的后续状态的允许值为4。因此，维特比均衡器的信号路径被限制为四个允许的下一状态，并且维特比均衡器用于选择将相邻时间间隔处的状态连接的某些路径作为幸存路径，从而形成最大似然路径。

40. 发明授权

US09438642B2 Methods for coordinating communications between a plurality of communication devices of a user 有权
标题翻译：用于协调用户的多个通信设备之间的通信的方法
公开(公告)号：US09438642B2
公开(公告)日：2016-09-06
申请号：US13461234
申请日：2012-05-01
申请人： William P. Alberth, Jr. , Kevin L. Baum , Dean E. Thorson
发明人： William P. Alberth, Jr. , Kevin L. Baum , Dean E. Thorson
IPC分类号： G06F15/16 , H04L29/06 , H04W4/02 , H04M3/42 , H04L29/08 , H04W4/20 , G06Q10/10 , H04L12/58
CPC分类号： H04L67/148 , G06Q10/10 , H04L51/14 , H04L51/20 , H04L65/1083 , H04L67/142 , H04L67/303 , H04M3/42263 , H04M3/42374 , H04M2203/2094 , H04W4/02 , H04W4/021 , H04W4/21
摘要： A communication device performs a method for coordinating communications between a plurality of communication devices of a user. The method includes detecting an active communication session on a primary communication device having user engagement, and determining a set of secondary communication devices in proximity to the user. The method further includes detecting an interruption event, at the primary communication device, during the active communication session. Additionally, the method includes determining that a first secondary communication device, in the set of secondary communication devices, has capability to process the interruption event, and transferring the interruption event to the first secondary communication device.
摘要翻译：通信装置执行用于协调用户的多个通信装置之间的通信的方法。该方法包括在具有用户参与的主通信设备上检测活动通信会话，以及确定邻近用户的一组辅助通信设备。该方法还包括在主通信会话期间在主通信设备处检测中断事件。此外，该方法包括确定该二次通信设备组中的第一次要通信设备具有处理该中断事件的能力，以及将该中断事件传送到该第一次要通信设备。

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