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公开(公告)号：US20080144665A1
公开(公告)日：2008-06-19
申请号：US11640952
申请日：2006-12-19
IPC分类号： H04B7/204
CPC分类号： H04L1/0001 , H04L27/3488 , H04L2001/0093
摘要： Systems and/or methods for relaying messages between nodes in a network (e.g. a wireless network) are provided. In accordance with certain exemplary embodiments, substantially simultaneous communications between nodes may be accomplished. At least one secondary turbo-coded message may be piggybacked onto a turbo-coded primary message. Messages in the network may be queued and sent from a transmitter to at least one receiver based at least in part on the signal-to-noise ratio(s) of the receiver nodes with respect to the transmitter. Thus, it may be possible to realize a network that reduces collision problems, reduces delays in communications, and/or increases throughput.
摘要翻译： 提供了用于在网络（例如，无线网络）中的节点之间中继消息的系统和/或方法。 根据某些示例性实施例，可以实现节点之间的基本上同时的通信。 至少一个二次涡轮编码消息可以搭载在turbo编码的主消息上。 至少部分地基于接收机节点相对于发射机的信噪比，网络中的消息可以被排队并从发射机发送到至少一个接收机。 因此，可以实现减少冲突问题，减少通信延迟和/或增加吞吐量的网络。
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公开(公告)号：US06542536B1
公开(公告)日：2003-04-01
申请号：US09441013
申请日：1999-11-16
申请人： John Erik Hershey , John Anderson Fergus Ross , Naofal Mohammed Wassel Al-Dhahir , Mark Lewis Grabb , Michael James Hartman , Richard Louis Frey , John Anthony Esposito , Roy Marion LaRosa
发明人： John Erik Hershey , John Anderson Fergus Ross , Naofal Mohammed Wassel Al-Dhahir , Mark Lewis Grabb , Michael James Hartman , Richard Louis Frey , John Anthony Esposito , Roy Marion LaRosa
IPC分类号： H04B169
CPC分类号： H04L27/2608 , H04B1/707 , H04B2201/70705
摘要： A spread spectrum communications system that is operable to provide user-selectable data transfer rates comprises a user station for generating an access request and a gateway server for receiving the access request. The gateway server includes a rate unit for comparing a requested rate to assigned rates, a selector for selecting an available user channel and an available signaling alphabet, and an allocation unit for assigning the carrier, user channel, and alphabet to the access request. One of several offered transfer rates is assigned to the available user channel. Each offered rate corresponds to a set of signaling alphabets with low cross-correlation for data transfer.
摘要翻译： 可操作以提供用户可选择的数据传输速率的扩频通信系统包括用于生成接入请求的用户站和用于接收接入请求的网关服务器。 网关服务器包括用于将请求速率与分配速率进行比较的速率单元，用于选择可用用户信道的选择器和可用信令字母表，以及用于将载波，用户信道和字母表分配给接入请求的分配单元。 几个提供的传输速率之一被分配给可用的用户信道。 每个提供的速率对应于用于数据传输的具有低互相关的一组信令字母。
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83.发明申请公开(公告)号：US20100149957A1
公开(公告)日：2010-06-17
申请号：US12336414
申请日：2008-12-16
IPC分类号： G11B7/135
CPC分类号： G11B7/0065 , G11B7/083 , G11B7/13 , G11B7/1381
摘要： The present techniques provide methods and systems for enhancing a data signal in reading optical discs, such as holographic data discs. The techniques involve adjusting the position of a detector, or multi-pixel detector, such that the reflection corresponding to a micro-hologram or micro-reflector is enhanced. For example, the detector position may be adjusted to a position where the surface reflection and the micro-hologram reflection constructively interfere, resulting in an amplified micro-hologram reflection signal. Other parameters such as disc reflectivity and detector pinhole size may be adjusted to increase signal enhancement. Furthermore, the detector position may be adjusted to a position where the phases of the surface reflection and the micro-hologram reflection result in a weaker cross term.
摘要翻译： 本技术提供了用于增强读取光盘（例如全息数据盘）中的数据信号的方法和系统。 这些技术涉及调整检测器或多像素检测器的位置，使得对应于微全息图或微反射器的反射增强。 例如，可以将检测器位置调整到表面反射和微全息图反射建构性地干扰的位置，导致放大的微全息图反射信号。 可以调整诸如盘反射率和检测器针孔尺寸的其它参数以增加信号增强。 此外，可以将检测器位置调整到表面反射和微全息图反射的相位导致较弱交叉项的位置。
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公开(公告)号：US08238217B2
公开(公告)日：2012-08-07
申请号：US12336414
申请日：2008-12-16
IPC分类号： G11B7/0065
CPC分类号： G11B7/0065 , G11B7/083 , G11B7/13 , G11B7/1381
摘要： The present techniques provide methods and systems for enhancing a data signal in reading optical discs, such as holographic data discs. The techniques involve adjusting the position of a detector, or multi-pixel detector, such that the reflection corresponding to a micro-hologram or micro-reflector is enhanced. For example, the detector position may be adjusted to a position where the surface reflection and the micro-hologram reflection constructively interfere, resulting in an amplified micro-hologram reflection signal. Other parameters such as disc reflectivity and detector pinhole size may be adjusted to increase signal enhancement. Furthermore, the detector position may be adjusted to a position where the phases of the surface reflection and the micro-hologram reflection result in a weaker cross term.
摘要翻译： 本技术提供用于增强读取光盘（例如全息数据盘）中的数据信号的方法和系统。 这些技术涉及调整检测器或多像素检测器的位置，使得对应于微全息图或微反射器的反射增强。 例如，可以将检测器位置调整到表面反射和微全息图反射建构性地干扰的位置，导致放大的微全息图反射信号。 可以调整诸如盘反射率和检测器针孔尺寸的其它参数以增加信号增强。 此外，可以将检测器位置调整到表面反射和微全息图反射的相位导致较弱交叉项的位置。
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公开(公告)号：US08453032B2
公开(公告)日：2013-05-28
申请号：US12764765
申请日：2010-04-21
IPC分类号： H03M13/00
CPC分类号： G11B20/1833 , G11B2020/10759 , G11B2020/10777 , G11B2020/183 , G11B2020/1843
摘要： Provided are methods and systems of selectively decoding optical data read from an optical storage medium based on a checksum algorithm technique. In one embodiment, optical data is converted into a data stream and buffered, and the checksum algorithm is applied to the data stream. If the calculated checksum matches an encoded checksum of the data stream, the data stream may be output without requiring further decoding. If the calculated checksum does not match the encoded checksum, the buffered data stream may be decoded to produce a corrected data stream, and the checksum algorithm may be applied to the corrected data stream. In some embodiments, the optical data may be re-read if the corrected data stream does not pass the checksum test, and the data stream obtained from the re-reading may be combined with the buffered data stream for further decoding.
摘要翻译： 提供了基于校验和算法技术来选择性地解码从光存储介质读取的光数据的方法和系统。 在一个实施例中，将光学数据转换为数据流并进行缓冲，并将校验和算法应用于数据流。 如果所计算的校验和与数据流的编码校验和匹配，则可以输出数据流而不需要进一步解码。 如果所计算的校验和与编码的校验和不匹配，则缓冲的数据流可以被解码以产生校正的数据流，并且校验和算法可以应用于校正的数据流。 在一些实施例中，如果校正的数据流未通过校验和测试，则可以重新读取光学数据，并且可以将从重新读取获得的数据流与缓冲的数据流组合以进一步解码。
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公开(公告)号：US07916605B2
公开(公告)日：2011-03-29
申请号：US12414310
申请日：2009-03-30
IPC分类号： G11B5/09
CPC分类号： H03M13/31 , G11B20/10009 , G11B20/10296 , G11B20/10379 , G11B20/1426 , G11B2020/1453 , G11B2020/1457 , G11B2220/2504 , G11B2220/2541 , H03M5/145 , H03M13/3905 , H03M13/3972
摘要： The present techniques provide systems and methods for decoding a data signal with a control bit to improve bit estimation. The techniques in one embodiment involve using decoding algorithms to estimate the a posteriori state probabilities and the a posteriori transition probabilities of the data encoding, and estimating bit state probabilities. The techniques further involve using a control bit in the bit stream and comparing the estimation of the control bit state in the segment of the bit stream with a test control bit determined based on an average of bit states from the encoded segment of the bit stream. If the estimation of the control bit and the test control bit are not equal, the state of the bit estimate with the lowest confidence probability will be changed.
摘要翻译： 本技术提供了利用控制位对数据信号进行解码以提高比特估计的系统和方法。 一个实施例中的技术涉及使用解码算法来估计后验状态概率和数据编码的后验转移概率，以及估计比特状态概率。 这些技术还涉及使用比特流中的控制比特并且比较比特流的片段中的控制比特状态的估计与基于来自比特流的编码片段的比特状态的平均值确定的测试控制比特。 如果控制位和测试控制位的估计不相等，则置信概率最低的位估计的状态将被改变。
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公开(公告)号：US20100246686A1
公开(公告)日：2010-09-30
申请号：US12414263
申请日：2009-03-30
IPC分类号： H04N11/02
CPC分类号： G11B20/10009 , G11B20/10277 , G11B20/105 , G11B20/18 , G11B20/24 , G11B2020/1453 , G11B2220/2504 , G11B2220/2537
摘要： The present techniques provide systems and methods for decoding an optical data signal in an optical system to retrieve source information while decreasing errors resulting from optical and electronic noise in the optical system. The techniques involve using decoding algorithms to estimate the a posteriori state probabilities and the a posteriori transition probabilities of the data encoding, and estimating bit state probabilities. The probability density function used to estimate bit states is parameterized by the expected optical and electronic noise in the optical system. Different optical and electronic noise variances, or different probability densities, may be stored in registers or look-up tables to be accessed by a decoder while decoding the optical data signal.
摘要翻译： 本技术提供了用于解码光学系统中的光学数据信号的系统和方法，用于检索源信息，同时减少由光学系统中的光学和电子噪声引起的误差。 这些技术涉及使用解码算法来估计后验状态概率和数据编码的后验转移概率，以及估计比特状态概率。 用于估计位状态的概率密度函数由光学系统中预期的光学和电子噪声参数化。 可以将不同的光学和电子噪声方差或不同的概率密度存储在寄存器或查找表中，以在解码光学数据信号的同时被解码器访问。
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公开(公告)号：US07756064B2
公开(公告)日：2010-07-13
申请号：US12016135
申请日：2008-01-17
IPC分类号： H04L12/28 , G06F15/173
CPC分类号： H04W84/00
摘要： Methodologies for determining one or more staged topologies for a communication network, communication networks implementing one or more staged topologies, and systems for determining one or more staged topologies for a communication network are provided. In one embodiment, a method of determining a staged topology for a wireless communication network including a plurality of nodes includes identifying a plurality of topologies comprising different subsets of available communication links among the nodes, establishing the beaming capabilities at each node, selecting a subset of the identified topologies meeting the beaming capabilities of each node, associating a connection matrix with each identified topology in the subset of topologies, establishing one or more sequences of topologies using the identified topologies in the subset of topologies, multiplying the connection matrices associated with the topologies in each sequence of topologies to obtain a sequenced connection matrix corresponding with each sequence of topologies, multiplying each sequenced connection matrix by a weighting matrix to obtain a total cost matrix corresponding with each sequence of topologies, and selecting one of the sequences of topologies as the staged topology based on the total cost matrices corresponding with each sequence of topologies.
摘要翻译： 提供用于确定通信网络的一个或多个分段拓扑，实现一个或多个分级拓扑的通信网络以及用于确定通信网络的一个或多个分级拓扑的系统的方法。 在一个实施例中，确定包括多个节点的无线通信网络的分段拓扑的方法包括识别包括节点之间的可用通信链路的不同子集的多个拓扑，在每个节点建立发射能力，选择一个子集 所识别的拓扑满足每个节点的发射能力，将连接矩阵与拓扑子集中的每个识别的拓扑结合起来，使用拓扑子集中的所识别的拓扑建立一个或多个拓扑序列，将与拓扑相关联的连接矩阵相乘 在每个拓扑序列中以获得与每个拓扑序列相对应的顺序连接矩阵，将每个顺序连接矩阵乘以加权矩阵，以获得与每个拓扑序列对应的总成本矩阵，并且选择拓扑序列之一作为 上演顶 基于与每个拓扑序列相对应的总成本矩阵的ology。
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公开(公告)号：US20080175173A1
公开(公告)日：2008-07-24
申请号：US12016135
申请日：2008-01-17
IPC分类号： H04L12/56
CPC分类号： H04W84/00
摘要： Methodologies for determining one or more staged topologies for a communication network, communication networks implementing one or more staged topologies, and systems for determining one or more staged topologies for a communication network are provided. In one embodiment, a method of determining a staged topology for a wireless communication network including a plurality of nodes includes identifying a plurality of topologies comprising different subsets of available communication links among the nodes, establishing the beaming capabilities at each node, selecting a subset of the identified topologies meeting the beaming capabilities of each node, associating a connection matrix with each identified topology in the subset of topologies, establishing one or more sequences of topologies using the identified topologies in the subset of topologies, multiplying the connection matrices associated with the topologies in each sequence of topologies to obtain a sequenced connection matrix corresponding with each sequence of topologies, multiplying each sequenced connection matrix by a weighting matrix to obtain a total cost matrix corresponding with each sequence of topologies, and selecting one of the sequences of topologies as the staged topology based on the total cost matrices corresponding with each sequence of topologies.
摘要翻译： 提供用于确定通信网络的一个或多个分段拓扑，实现一个或多个分级拓扑的通信网络以及用于确定通信网络的一个或多个分级拓扑的系统的方法。 在一个实施例中，确定包括多个节点的无线通信网络的分段拓扑的方法包括识别包括节点之间的可用通信链路的不同子集的多个拓扑，在每个节点建立发射能力，选择一个子集 所识别的拓扑满足每个节点的发射能力，将连接矩阵与拓扑子集中的每个识别的拓扑结合起来，使用拓扑子集中的所识别的拓扑建立一个或多个拓扑序列，将与拓扑相关联的连接矩阵相乘 在每个拓扑序列中以获得与每个拓扑序列相对应的顺序连接矩阵，将每个顺序连接矩阵乘以加权矩阵，以获得与每个拓扑序列对应的总成本矩阵，并且选择拓扑序列之一作为 上演顶 基于与每个拓扑序列相对应的总成本矩阵的ology。
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公开(公告)号：US06304996B1
公开(公告)日：2001-10-16
申请号：US09263566
申请日：1999-03-08
申请人： Nick Andrew Van Stralen , John Anderson Fergus Ross , Stephen Michael Hladik , Abdallah Mahmoud Itani , Robert Gideon Wodnicki
发明人： Nick Andrew Van Stralen , John Anderson Fergus Ross , Stephen Michael Hladik , Abdallah Mahmoud Itani , Robert Gideon Wodnicki
IPC分类号： H03M1303
CPC分类号： H03M13/3905 , H03M13/2957 , H03M13/3911 , H03M13/3922 , H03M13/3961 , H03M13/6561 , H03M13/6572 , H03M13/658 , H03M13/6583 , H03M13/6591
摘要： A high-speed turbo decoder utilizes a MAP decoding algorithm and includes a streamlined construction of functional units, or blocks, amenable to ASIC implementation. A gamma block provides symbol-by-symbol a posteriori state transition probability estimates. Two gamma probability function values are provided via selection switches to the alpha and beta blocks for calculating the alpha and beta probability function values, i.e., performing the alpha and beta recursions, respectively, in parallel, thus significantly increasing decoding speed. A scaling circuit monitors the values of the alpha and beta probability functions and prescribes a scale factor such that all such values at a trellis level remain within the precision limits of the system. A sigma block determines the a posteriori state transition probabilities (sigma values) and uses the sigma values to provide soft-decision outputs of the turbo decoder.
摘要翻译： 高速turbo解码器利用MAP解码算法，并且包括易于实施ASIC的功能单元或块的流线型结构。 伽马块提供逐符号的后验状态转换概率估计。 两个伽马概率函数值通过选择开关提供给α和β块用于计算α和β概率函数值，即分别执行α和β递归，从而显着增加解码速度。 缩放电路监视α和β概率函数的值，并规定了比例因子，使得网格级别上的所有这些值都保持在系统的精度限度内。 西格玛块确定后验状态转移概率（sigma值），并使用西格玛值来提供turbo解码器的软判决输出。
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