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1.发明授权公开(公告)号：US08509835B2
公开(公告)日：2013-08-13
申请号：US10401115
申请日：2003-03-26
IPC分类号： H04B7/00
摘要： In an illustrative embodiment of the present invention, a reference signal including pilot information is transmitted from a base station to one or multiple field units over a pilot channel. A message is also sent to the field units over a paging channel to indicate an effective radiated power level at which the reference signal is transmitted on the pilot channel. Based on a received power level of the reference signal at a field unit and the effective radiated power level of the reference signal, a forward path loss is estimated at the field unit for the forward link between the base station and field unit. Assuming the path loss in the reverse link is approximately the same as the estimated forward link path loss, the field unit can transmit, a reply message in the reverse link so that the base station generally receives a message at a desired power level.
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公开(公告)号：US06690715B2
公开(公告)日：2004-02-10
申请号：US09823845
申请日：2001-03-30
IPC分类号： H04J13104
CPC分类号： H04B1/7105 , H04B1/7093 , H04B1/7115 , H04L25/03057 , H04L2025/03375 , H04L2025/03401 , H04L2025/0349
摘要： The performance of a RAKE receiver for indoor multipath WLAN applications on direct sequence spread spectrum signals having relatively short codeword lengths is enhanced by embedding a decision feedback equalizer structure in the signal processing path through the receiver's channel matched filter and codeword correlator. The decision feedback equalizer serves to cancel both inter-codeword interference (ISI) or “bleed-over” between codewords, and intra-codeword chip interference (ICI) or smearing of the energy within the chips of a respective codeword.
摘要翻译： 通过在信号处理路径中通过接收机的信道匹配滤波器和码字相关器嵌入判决反馈均衡器结构，增强了具有相对短的码字长度的直接序列扩频信号上用于室内多路径WLAN应用的RAKE接收机的性能。 判决反馈均衡器用于消除码字之间的码间干扰（ISI）或“渗漏”，以及相应码字的码片内的码内码片干扰（ICI）或能量的拖尾。
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3.发明授权Biased-corrected rake receiver for direct sequence spread spectrum waveform 有权用于直接序列扩频波形的偏置校正后的Rake接收机公开(公告)号：US06614836B1
公开(公告)日：2003-09-02
申请号：US09494000
申请日：2000-01-28
IPC分类号： H04B1707
CPC分类号： H04B1/7115 , H04B1/7093
摘要： The performance of a RAKE receiver for indoor multipath WLAN applications on direct sequence spread spectrum signals having relatively short codeword lengths comprises a channel-matched filter and codeword correlator front end, plus a signal combiner to which the codeword correlation component is applied. The signal combiner is supplied with a bias-corrected input calculated by a distorted codeword signature (power) generator, which is operative to generate and store a set of N codeword power correction values. The signal combiner combines correction values into the codeword correlation for each potentially transmitted codeword Sk. This serves to correct each correlation codeword metric by a de-biasing power component |Sk|2 for the unequal multipath-based distortions of the codeword energies. The output of the signal combiner is coupled to a peak detector, which selects a minimum distance-based ‘de-biased’ output as the transmitted codeword.
摘要翻译： 具有相对短的码字长度的直接序列扩频信号上的用于室内多路径WLAN应用的RAKE接收机的性能包括信道匹配滤波器和码字相关器前端，以及应用码字相关分量的信号组合器。 信号组合器被提供有由失真的码字签名（功率）发生器计算的偏置校正输入，其可操作以产生和存储一组N个码字功率校正值。 信号组合器将校正值组合成每个潜在传输码字Sk的码字相关。 这用于通过针对码字能量的不等的基于多径的失真的去偏置功率分量| Sk | 2来校正每个相关码字度量。 信号组合器的输出耦合到峰值检测器，峰值检测器选择基于距离的最小“去偏置”输出作为发送的码字。
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公开(公告)号：US08830977B2
公开(公告)日：2014-09-09
申请号：US13311151
申请日：2011-12-05
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
摘要翻译： 一种用于编码数字通信信号的技术。 数据符号在插入预定位置的导频符号中增加。 导频增强序列然后被馈送到诸如turbo乘积编码器的确定性纠错块编码器，以输出编码序列。 然后重新排列纠错编码序列中的符号，以确保从输入导频符号导出的输出符号位于规则的预定位置。 结果，可以更容易地使用信道编码方案，其受益于两个长度块大小的功率。
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5.发明授权Method for searching pilot signals to synchronize a CDMA receiver with an associated transmitter 有权用于搜索导频信号以使CDMA接收机与相关联的发射机同步的方法公开(公告)号：US08315294B2
公开(公告)日：2012-11-20
申请号：US13073594
申请日：2011-03-28
IPC分类号： H04B1/38
CPC分类号： H04W56/001 , H04B1/7075 , H04B1/70775 , H04B1/7103 , H04B7/086 , H04B2201/70701 , H04L27/2273 , H04L2027/0057 , H04L2027/0087
摘要： A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed reception angle (i.e., a directional pattern) by permitting the receiver to identify a pilot signal having the largest magnitude. The receiver minimizes interference from other pilot signals by steering antenna pattern nulls toward other transmitters. As a result, the time required for the receiver to acquire a valid pilot signal is significantly reduced.
摘要翻译： 一种当使用自适应天线来接收发射数据时将CDMA接收机同步到发射机的方法，其中接收天线系统适应于360°接收角度模式（即，全向模式）和固定接收角度 即，方向图），通过允许接收机识别具有最大幅度的导频信号。 接收器通过向其他发射机转向天线图形零点来最小化来自其他导频信号的干扰。 结果，接收机获取有效导频信号所需的时间显着减少。
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公开(公告)号：US20080189558A1
公开(公告)日：2008-08-07
申请号：US11670059
申请日：2007-02-01
申请人： James P. Hughes , George R. Nelson
发明人： James P. Hughes , George R. Nelson
IPC分类号： G06F12/14
CPC分类号： H04L67/1097 , G06F21/80
摘要： A system and a method for secure data storage includes one or more data storage devices. A storage area network places the one or more data storage devices in communication with one or more user interfaces. A secure data solution includes a log structured driver interfacing with the one or more data storage devices to encrypt and secure data stored thereon. The log structured driver encrypts and decrypts data into a plurality of segments created on the one or more data storage devices. The system includes a traffic masking pattern that is used to obscure activity on the system from potential attackers.
摘要翻译： 用于安全数据存储的系统和方法包括一个或多个数据存储设备。 存储区域网络将一个或多个数据存储设备与一个或多个用户界面通信。 安全数据解决方案包括与一个或多个数据存储设备接口的日志结构驱动程序，用于加密和保护存储在其上的数据。 日志结构化驱动程序将数据加密和解密成在一个或多个数据存储设备上创建的多个段。 该系统包括用于从潜在的攻击者模糊系统活动的流量屏蔽模式。
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7.发明授权Controlled gloss pigment system for coating printing papers at paper machine calendering conditions 失效控制光泽颜料系统，用于在造纸机压光条件下涂布印刷纸
公开(公告)号：US4198471A
公开(公告)日：1980-04-15
申请号：US893647
申请日：1978-04-04
申请人： George R. Nelson
发明人： George R. Nelson
IPC分类号： B41M5/52 , C08L25/04 , C08L61/00 , C08L61/24 , D21H19/42 , B05D3/02 , B05D3/12 , B32B27/10 , B32B27/42
CPC分类号： D21H19/42 , B41M5/5254 , C08L25/04 , C08L61/00 , C08L61/24 , Y10T428/31902 , Y10T428/31964
摘要： The combination of a thermoplastic polymer and a thermosetting polymer, provides a pigment system for producing coated printing papers. The thermoplastic polymer and thermosetting polymer, suspended in well-known coating binders and carriers, is applied to the web substrate on a standard paper machine. The amount of thermoset, preferably at least about 25% by weight of the pigment solids, improves ink receptivity and allows adjustable control of finished paper gloss. The amount of thermoset added to the pigment system is limited, however, preferably below about 75% by weight of the pigment solids, so that the finished printing paper obtains a Gardner 75.degree. gloss of at least about 40, at calendering pressures of less than 500 PLI.
摘要翻译： 热塑性聚合物和热固性聚合物的组合提供了用于生产涂布印刷纸的颜料体系。 将悬浮在众所周知的涂料粘合剂和载体中的热塑性聚合物和热固性聚合物施加到标准造纸机上的幅材基材上。 热固性的量，优选至少约25重量％的颜料固体，改善了油墨的接受性，并且允许调整成品纸的光泽度。 添加到颜料体系中的热固性量的限制是有限的，然而优选低于颜料固体的约75重量％，使得成品打印纸获得至少约40的加德纳75度光泽，压印压力小于 500 PLI。
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8.发明申请METHOD FOR SEARCHING PILOT SIGNALS TO SYNCHRONIZE A CDMA RECEIVER WITH AN ASSOCIATED TRANSMITTER 有权搜索引航信号以同步相关发射机的CDMA接收机的方法公开(公告)号：US20110170493A1
公开(公告)日：2011-07-14
申请号：US13073594
申请日：2011-03-28
IPC分类号： H04W40/00
CPC分类号： H04W56/001 , H04B1/7075 , H04B1/70775 , H04B1/7103 , H04B7/086 , H04B2201/70701 , H04L27/2273 , H04L2027/0057 , H04L2027/0087
摘要： A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed reception angle (i.e., a directional pattern) by permitting the receiver to identify a pilot signal having the largest magnitude. The receiver minimizes interference from other pilot signals by steering antenna pattern nulls toward other transmitters. As a result, the time required for the receiver to acquire a valid pilot signal is significantly reduced.
摘要翻译： 一种当使用自适应天线来接收发射数据时将CDMA接收机同步到发射机的方法，其中接收天线系统适应于360°接收角度模式（即，全向模式）和固定接收角度 即，方向图），通过允许接收机识别具有最大幅度的导频信号。 接收器通过向其他发射机转向天线图形零点来最小化来自其他导频信号的干扰。 结果，接收机获取有效导频信号所需的时间显着减少。
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公开(公告)号：US06661857B1
公开(公告)日：2003-12-09
申请号：US09612823
申请日：2000-07-10
IPC分类号： H04B110
CPC分类号： H04L25/0236 , H04L25/0212
摘要： A channel estimator for use with the wireless digital data receiver facilitates processing of a preamble symbol sequence received over a multipath communication channel to enable the impulse response of the channel to be rapidly estimated, and thereby set the parameters of the receiver's decision feedback equalizer. During the preamble dwell interval, selected estimates of one or more received preamble symbols within a plurality of successive data symbols are repeated, in order to generate a longer sequence of preamble symbol estimates. The receiver's processor then employs this longer sequence of data symbol values, to solve an associated set of linear equations for estimating the multipath channel's impulse response.
摘要翻译： 与无线数字数据接收器一起使用的信道估计器有助于对通过多路径通信信道接收的前导码符号序列的处理，以使得能够快速估计信道的脉冲响应，从而设置接收机的判决反馈均衡器的参数。 在前导码驻留间隔期间，重复多个连续数据符号内的一个或多个接收到的前导码符号的所选估计，以便产生更长序列的前导码符号估计。 接收机的处理器然后采用这种更长的数据符号值序列，以求解用于估计多路径信道的脉冲响应的相关联的线性方程组。
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10.发明授权Access probe acknowledgment including collision detection to avoid oversetting initial power level 有权访问探测确认，包括碰撞检测，以避免初始功率级别过大公开(公告)号：US06545994B2
公开(公告)日：2003-04-08
申请号：US09792410
申请日：2001-02-23
IPC分类号： H04B7212
CPC分类号： H04W52/242 , H04L1/1607 , H04L12/5602 , H04L47/14 , H04L47/26 , H04L2001/0093 , H04W24/00 , H04W52/228 , H04W52/48 , H04W52/50 , H04W74/0825 , H04W74/0858
摘要： In an illustrative embodiment of the present invention, a first channel is allocated for transmitting sporadically generated messages from multiple field units to a base station. The first channel is preferably divided into time slots in which a field unit transmits an access request message to the base station for establishing a communication link. In response to an access request message, feedback information is provided from the base station to multiple field units indicating whether a collision was detected on the first channel for a message transmitted in a previous time slot. In an instance when a collision is detected, the field unit will re-transmit an access request message at a previous power level setting based on a random back off time. If no collision is detected and the base station fails to transmit an acknowledgment message from the base station to the access requesting field unit, the power output level of the field unit is increased for successive message transmissions until the message is received.
摘要翻译： 在本发明的说明性实施例中，分配第一信道用于将来自多个场单元的偶发生成的消息发送到基站。 第一信道优选地被划分为时隙，其中，场单元向基站发送接入请求消息以建立通信链路。 响应于访问请求消息，反馈信息从基站提供给多个字段单元，指示在第一信道上是否检测到在先前时隙中发送的消息的冲突。 在检测到冲突的情况下，场单元将基于随机退避时间在先前功率电平设置下重新发送接入请求消息。 如果没有检测到冲突，并且基站无法从基站向接入请求字段单元发送确认消息，则对于连续的消息传输增加了现场单元的功率输出电平，直到接收到消息。
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