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公开(公告)号：US07010054B2
公开(公告)日：2006-03-07
申请号：US10012950
申请日：2001-11-07
IPC分类号： H04L1/02
CPC分类号： H04L1/0059 , H04L1/0054 , H04L1/0618
摘要： A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that is configured to output a message signal, and an encoder that is configured to generate a code word in response to the message signal. The code word has a construction that is based upon a single dimensional binary code and that specifies a space-time overlay having a predetermined constraint. The transmitter also includes a modulator that is configured to modulate the code word for transmission over the communication channel. Further, the transmitter includes multiple transmit antennas that are configured to transmit the modulated code word over the communication channel. The system also includes a receiver, which may include multiple receive antennas. The receiver is configured to receive the transmitted code word via the multiple receive antennas.
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22.发明授权System employing threaded space-time architecture for transporting symbols and receivers for multi-user detection and decoding of symbols 有权系统采用线程时空架构传输符号和接收器，用于符号的多用户检测和解码公开(公告)号：US06898248B1
公开(公告)日：2005-05-24
申请号：US09613938
申请日：2000-07-11
CPC分类号： H04L1/005 , H04L1/0048 , H04L1/0055 , H04L1/0071 , H04L1/0631
摘要： A threaded space-time (TST) architecture in a multiple antenna wireless communication system uses the coded transmission in each layer of a transmission resource array as a space-time code. Each layer of a layer set is active during all available symbol transmission intervals, and each of the transmit antennas are used equally often, such that layers each transmit a symbol using a different antenna during each symbol transmission interval. A receiver is provided for multi-user reception using an iterative, soft-input/soft-output (SISO) multi-user detection algorithm based on minimum mean square error (MMSE) criterion, among other methods.
摘要翻译： 多天线无线通信系统中的线程时空（TST）架构使用传输资源阵列的每层中的编码传输作为时空码。 层集合的每一层在所有可用的符号传输间隔期间是有效的，并且每个发射天线被频繁使用，使得各层在每个符号传输间隔期间使用不同的天线发送符号。 使用基于最小均方误差（MMSE）标准的迭代软输入/软输出（SISO）多用户检测算法等提供接收机用于多用户接收。
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23.发明授权Forward error correction scheme for data channels using universal turbo codes 有权使用通用turbo码的数据通道的前向纠错方案公开(公告)号：US06857098B2
公开(公告)日：2005-02-15
申请号：US10662177
申请日：2003-09-12
CPC分类号： H03M13/2957 , H03M13/036 , H03M13/2789 , H03M13/2903 , H03M13/6362 , H03M13/6381 , H04L1/0066 , H04L1/0069
摘要： A method of providing forward error correction for data services uses a parallel concatenated convolutional code which is a Turbo Code comprising a plurality of eight-state constituent encoders wherein a plurality of data block sizes are used in conjunction with said Turbo Code. A variation uses the method in a cellular radio system. Another variation uses the method in both forward and reverse likes of a cellular radio system.
摘要翻译： 提供用于数据业务的前向纠错的方法使用并行级联卷积码，其是包括多个八状态组成编码器的Turbo码，其中多个数据块大小与所述Turbo码结合使用。 变体使用蜂窝无线电系统中的方法。 另一种变型使用蜂窝无线电系统的正向和反向方式。
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公开(公告)号：US06438121B1
公开(公告)日：2002-08-20
申请号：US09216108
申请日：1998-12-18
申请人： A. Roger Hammons, Jr. , Ernest Yeh
发明人： A. Roger Hammons, Jr. , Ernest Yeh
IPC分类号： H04J300
CPC分类号： H04L1/0059 , H04L1/0054 , H04L1/0068 , H04L1/0071
摘要： A method and apparatus for determining if useful auxiliary information in an auxiliary time slot is available for subscriber unit use. The present invention includes a receiver that receives data from both an auxiliary time slot and a dedicated time slot. Data from the receiver is coupled to a computation function that calculates a metric comparing the data from the auxiliary time slot and the dedicated time slot. The calculated metric is coupled to a threshold comparator that compares the calculated metric to a threshold. Based on the results of the comparison, a determination is made on the presence or absence of useful auxiliary data in an auxiliary time slot.
摘要翻译： 一种用于确定辅助时隙中有用的辅助信息是否可用于用户单元使用的方法和装置。 本发明包括从辅助时隙和专用时隙两者接收数据的接收机。 来自接收机的数据被耦合到计算功能，该计算功能计算比较来自辅助时隙和专用时隙的数据的度量。 所计算的度量被耦合到阈值比较器，其将所计算的度量与阈值进行比较。 基于比较的结果，确定辅助时隙中有用辅助数据的存在或不存在。
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25.发明授权Sets of rate-compatible universal turbo codes nearly optimized over various rates and interleaver sizes 有权速率兼容的通用turbo码的集合在各种速率和交织器大小上几乎被优化公开(公告)号：US06370669B1
公开(公告)日：2002-04-09
申请号：US09248338
申请日：1999-02-11
IPC分类号： H03M1329
CPC分类号： H03M13/2957 , H03M13/036 , H03M13/2789 , H03M13/6381 , H04L1/0066 , H04L1/0069
摘要： A method and apparatus for Turbo encoding uses a set of rate-compatible Turbo Codes optimized at high code rates and derived from a universal constituent code. The Turbo Codes have rate-compatible puncturing patterns. The method comprises: encoding a signal at a first and second encoder using a best rate 1/2 constituent code universal with higher code rates, the first encoder and the second encoder each producing a respective plurality of parity bits for each information bit; puncturing the respective plurality of parity bits at each encoder with a higher rate best puncturing patterns; and puncturing the respective plurality of parity bits at each encoder with a lower rate best puncturing pattern. In a variation, the best rate 1/2 constituent code represents a concatenation of polynomials 1+D2+D3 (octal 13) and 1+D+D3 (octal 15), D a data bit. A Turbo Encoder is provided which has hardware to implement the method.
摘要翻译： 用于Turbo编码的方法和装置使用一组以高码率优化并由通用组成码导出的速率兼容Turbo码。 Turbo码具有速率兼容的穿孔模式。 该方法包括：使用具有较高码率的通用最佳速率1/2构成码在第一和第二编码器处对信号进行编码，第一编码器和第二编码器为每个信息比特产生相应的多个奇偶校验位; 在每个编码器处以更高速率的最佳穿孔模式对相应的多个奇偶校验位进行穿孔; 以及在每个编码器处以较低速率的最佳打孔图案对相应的多个奇偶校验位进行穿孔。 在一个变型中，最佳速率1/2分量代码表示多项式1 + D2 + D3（八进制13）和1 + D + D3（八进制15），D是数据比特的级联。 提供了一种具有执行该方法的硬件的Turbo编码器。
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公开(公告)号：US06332209B1
公开(公告)日：2001-12-18
申请号：US09378625
申请日：1999-08-20
IPC分类号： H03M1323
CPC分类号： H03M13/6362 , H03M13/2903 , H03M13/2993 , H03M13/2996 , H03M13/4123
摘要： A method of terminating two or more constituent encoders of a turbo encoder employing a turbo code, comprising the step of: generating tail input bits at each of two or more constituent encoders, including deriving the tail input bits from each of the two or more constituent encoders separately from a contents of shift registers within each of the two or more constituent encoders, after an encoding of information bits by the two or more constituent encoders; puncturing one or more tail output bits such that 1/R output tail bits are transmitted for each of a plurality of trellis branches, wherein R is a turbo code rate employed by the turbo encoder during an information bit transmission. In yet another variation, the step of puncturing the tail output bits further comprises the step of: transmitting, during trellis termination, the tail output bits, only if they are sent from an output branch of one of the two or more constituent encoders that are used during information bit transmission.
摘要翻译： 一种终止采用turbo码的turbo编码器的两个或更多个组成编码器的方法，包括以下步骤：在两个或更多个组成编码器中的每一个处产生尾部输入位，包括从两个或更多个成分中的每一个导出尾部输入位 在两个或多个组成编码器对信息比特进行编码之后，与两个或更多个组成编码器中的每一个中的移位寄存器的内容分开编码; 对一个或多个尾部输出位进行穿孔，使得对于多个网格分支中的每一个发送1 / R个输出尾比特，其中R是在信息比特传输期间由turbo编码器采用的turbo码率。 在另一个实施例中，打孔尾部输出位的步骤还包括以下步骤：在网格终止期间，仅在从两个或更多个组成编码器之一的输出分支发送尾部输出位时发送尾部输出位， 在信息位传输期间使用。
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公开(公告)号：US06263031B1
公开(公告)日：2001-07-17
申请号：US09109799
申请日：1998-07-02
IPC分类号： H04L2706
CPC分类号： H04L7/042 , H04L27/22 , H04L2027/0065 , H04L2027/0093 , H04L2027/0095
摘要： A burst classifier is useful in a digital communication system transmitting a signal burst of a plurality of different burst types. The burst classifier includes a plurality of filters associated with the plurality of different burst types, respectively. Each filter generates correlation data based on the signal burst and a respective plurality of reference signals offset by a plurality of time offsets. The respective pluralities of reference signals are indicative of a corresponding burst type of the plurality of different burst types. A comparator then analyzes quantities based on the correlation data from each filter to determine the burst type of the signal burst.
摘要翻译： 突发分类器在传输多种不同突发类型的信号突发的数字通信系统中是有用的。 突发分类器分别包括与多个不同突发类型相关联的多个滤波器。 每个滤波器基于信号脉冲串和由多个时间偏移偏移的相应多个参考信号来产生相关数据。 相应的多个参考信号指示多个不同突发类型的相应突发类型。 比较器然后基于来自每个滤波器的相关数据分析量，以确定信号脉冲串的脉冲串类型。
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28.发明授权
公开(公告)号：US5832031A
公开(公告)日：1998-11-03
申请号：US516584
申请日：1995-08-18
CPC分类号： H04L1/0057
摘要： A method and apparatus for synchronizing and error checking received bitstreams of encoded information is provided. The apparatus includes a single polynomial division shift register. The method involves calculating successive syndromes using the single polynomial division shift register by shifting the received bits of information, generating a syndrome, and comparing the syndrome to a known marker syndrome.
摘要翻译： 提供了一种用于同步和错误检验所接收的编码信息比特流的方法和装置。 该装置包括单个多项式除法移位寄存器。 该方法包括使用单个多项式分割移位寄存器来计算连续综合征，通过移位所接收的信息比特，产生综合征，并将该综合征与已知的标记综合征进行比较。
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29.发明授权Systems and methods for a rateless round robin protocol for adaptive error control 有权用于自适应误差控制的无轮循环协议的系统和方法公开(公告)号：US08671332B2
公开(公告)日：2014-03-11
申请号：US12770307
申请日：2010-04-29
IPC分类号： H03M13/00
CPC分类号： H04L1/1812 , H04L1/1829 , H04L1/1874
摘要： Systems and methods implementing a protocol that provides reliable transport over a point-to-point link characterized by deep and sustained fades. Such a communications link may be a free space optical channel or may be a radio frequency point-to-point channel. Data frames are processed through a circular data buffer that operates in a round robin fashion at a transmission node. The coding and forward error correction processes allow for continued operation in spite of possible signal fades due to atmospheric turbulence or other causes. At a receive node, incoming data is also saved in a circular buffer. A re-acknowledgment list is maintained at the receive node for tracking recently received and decoded data. This allows for a new acknowledgment to be sent in the event that a previously sent acknowledgment failed to reach the transmission node.
摘要翻译： 实施协议的系统和方法，其提供以深而持续的衰落为特征的点对点链路的可靠传输。 这样的通信链路可以是自由空间光信道，或者可以是射频点对点信道。 通过循环数据缓冲器来处理数据帧，循环数据缓冲器在传输节点处以循环方式工作。 尽管由于大气湍流或其他原因，尽管可能的信号衰减，编码和前向纠错处理允许继续操作。 在接收节点，传入数据也保存在循环缓冲区中。 在接收节点处保持重新确认列表，用于跟踪最近接收和解码的数据。 这允许在先前发送的确认未能到达传输节点的情况下发送新的确认。
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公开(公告)号：US08665756B2
公开(公告)日：2014-03-04
申请号：US13329790
申请日：2011-12-19
IPC分类号： H04L12/28
CPC分类号： H04W40/248 , H04W16/28 , H04W72/046
摘要： The present invention includes a system and method by which a network of directional, wireless nodes that are not fixed in space can be optimized by optimizing each node individually. The network does not have a central control node, so each node is responsible for optimizing its surrounding topology. This is accomplished by synthesizing incoming information from neighboring nodes and determining which nodes will provide the best connections based on specific utilities each node is attempting to optimize. Neighboring nodes then exchange messages to request, accept, or reject directional connections between them based on their preferred optimizations. The overall directional network topology is achieved by consensus driven by local preferences.
摘要翻译： 本发明包括可以通过单独优化每个节点来优化在空间中不固定的定向无线节点的网络的系统和方法。 网络没有中央控制节点，因此每个节点负责优化其周围拓扑。 这是通过合成来自相邻节点的传入信息并且基于每个节点尝试优化的特定实用来确定哪些节点将提供最佳连接来实现的。 然后，相邻节点根据其优选优化来交换消息以请求，接受或拒绝它们之间的定向连接。 整体定向网络拓扑通过局部偏好驱动的共识来实现。
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