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    • 31. 发明授权
    • Method and arrangement for decoding a signal encoded by a tail-biting code
    • 用于解码由尾巴码编码的信号的方法和装置
    • US09571129B2
    • 2017-02-14
    • US12990246
    • 2009-04-08
    • Matthias Kamuf
    • Matthias Kamuf
    • H03M13/39H03M13/37H03M13/41H03M13/00H04L1/00
    • H03M13/3972H03M13/3723H03M13/3938H03M13/3955H03M13/413H03M13/6525H04L1/0046H04L1/0054
    • A method of decoding a signal that has been encoded by a tail-biting code based on at least one encoding parameter is disclosed. The at least one encoding parameter may be a trellis size or a quantity of aggregated encoding elements or a code rate. The method is suitable for use in a communication device and comprises receiving the signal, performing a first decoding attempt of the signal based on a first set of starting state metrics and a first encoding parameter hypothesis, the first decoding attempt resulting in a first set of ending state metrics. The method further comprises performing, if the first decoding attempt fails, a second decoding attempt of the signal based on a second set of starting state metrics based on the first set of ending state metrics and a second encoding parameter hypothesis different from the first encoding parameter hypothesis.
    • 公开了一种基于至少一个编码参数来解码由尾巴代码编码的信号的方法。 所述至少一个编码参数可以是网格大小或聚合编码元素的数量或码率。 该方法适合于在通信设备中使用,并且包括接收信号,基于第一组起始状态量度和第一编码参数假设来执行信号的第一解码尝试,所述第一解码尝试导致第一组 结束状态指标。 所述方法还包括:如果所述第一解码尝试失败,则基于所述第一组结束状态度量和基于所述第一编码参数的第二编码参数假设,基于所述第二组起始状态量度来执行所述信号的第二解码尝试 假设。
    • 32. 发明授权
    • Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus
    • 用于软值处理装置中的组成处理器电路之间的软信息传送的方法和装置
    • US08713414B2
    • 2014-04-29
    • US13358978
    • 2012-01-26
    • Matthias KamufAndres Reial
    • Matthias KamufAndres Reial
    • H03M13/03
    • H04L25/03318H03M13/2957H03M13/6505H03M13/6577H04L1/005H04L1/1861H04L25/03171H04L25/067
    • In one or more aspects, the present invention improves the efficiency of soft information transfer within a soft-value processing apparatus, by reducing in some sense the “amount” of soft information transferred between constituent processor circuits within the apparatus, without forfeiting or otherwise compromising the transfer of “valuable” soft information. In one example, the soft values produced by a constituent processor circuit are identified as being reliable or unreliable according to a reliability threshold. Some or all of the unreliable values are omitted from a soft value information transfer to another constituent processor circuit, or they are quantized for such transfer. The reduction in memory requirements for soft information transfer advantageously allows the use of lower power, less complex, and less expensive circuitry than would otherwise be required in the apparatus, which may be, as a non-limiting example, a Turbo receiver in a wireless communication device.
    • 在一个或多个方面,本发明通过在某种意义上减少在装置内的组成处理器电路之间传送的软信息的“量”来提高软值处理装置内软信息传送的效率,而不会丧失或以其他方式折中 转移“有价值”的软信息。 在一个示例中,由组成处理器电路产生的软值根据可靠性阈值被识别为可靠或不可靠。 从另一个构成处理器电路的软值信息中省略了一部分或全部不可靠的值,也可以对这些值进行量化。 软信息传输的存储器要求的减少有利地允许使用比设备中另外需要的更低功率,更不复杂和更便宜的电路,其可以作为非限制性示例,无线的Turbo接收器 通讯装置
    • 33. 发明申请
    • Decoding Technique for Tail-Biting Codes
    • 尾码的解码技术
    • US20130114766A1
    • 2013-05-09
    • US13810547
    • 2010-07-30
    • Stefan Mueller-WeinfurtnerMatthias Kamuf
    • Stefan Mueller-WeinfurtnerMatthias Kamuf
    • H04L1/00
    • H04L1/0054H03M13/3994H03M13/413H03M13/6525
    • A technique for decoding a signal in a communication network is provided. A method implementation of the technique comprises the steps of receiving a signal; identifying a position in the signal; initializing a Viterbi state metric; and decoding the encoded signal by means of a wrap-around Viterbi algorithm. The received signal comprises information, wherein the signal is encoded by a tail-biting convolutional code. The identified position relates to a known portion of the information. The initialized Viterbi state metric is consistent with the known portion of the information. The decoding uses the initial Viterbi state metric, wherein the decoding starts at a decoding step following the identified position.
    • 提供了一种用于对通信网络中的信号进行解码的技术。 该技术的方法实现包括以下步骤:接收信号; 识别信号中的位置; 初始化维特比状态度量; 并通过环绕维特比算法对编码信号进行解码。 所接收的信号包括信息,其中信号由尾巴卷积码编码。 所识别的位置涉及信息的已知部分。 初始化的维特比状态度量与信息的已知部分一致。 解码使用初始维特比状态度量,其中解码从识别位置之后的解码步骤开始。
    • 34. 发明申请
    • Soft Output Viterbi Algorithm Method and Decoder
    • 软输出维特比算法和解码器
    • US20120159288A1
    • 2012-06-21
    • US13389907
    • 2010-08-12
    • Matthias KamufLay Hong AngWee Guan Lim
    • Matthias KamufLay Hong AngWee Guan Lim
    • H03M13/41H03M13/25G06F11/10
    • H03M13/41H03M13/3707H03M13/3776H03M13/39H03M13/3972H03M13/4146H03M13/4153H03M13/4184H03M13/6511H03M13/6525
    • A method of decoding a block with a Soft Output Viterbi Algorithm (SOVA) using a trellis representation and a sliding window wherein each position of the sliding window has a path determination stage at one end of the sliding window and a symbol decision stage at another end of the sliding window is disclosed. The method comprises determining, for each path determination stage and for each node of the path determination stage, a surviving path (including a surviving path input symbol and a surviving decision stage node) and a concurrent path (including a concurrent path input symbol and a concurrent decision stage node) based on path metrics. A path metric disparity value is calculated and stored for each node. Based on decision criteria, a soft output value of the surviving decision stage node is determined as either of the path metric disparity value of the node of the path determination stage, a function of the path metric disparity value of the node of the path determination stage and the stored path metric disparity value of the concurrent decision stage node, and the stored path metric disparity value of the surviving decision stage node. Corresponding computer program product, decoder and communication apparatus are also disclosed.
    • 一种使用网格表示和滑动窗口的软输出维特比算法(SOVA)对块进行解码的方法,其中滑动窗口的每个位置在滑动窗口的一端具有路径确定阶段,在另一端具有符号决定阶段 公开了滑动窗口。 该方法包括针对每个路径确定阶段以及路径确定阶段的每个节点确定幸存路径(包括幸存路径输入符号和幸存决策阶段节点)和并发路径(包括并行路径输入符号和 并发决策阶段节点)。 为每个节点计算并存储路径度量差异值。 基于判定标准,将存活判定级节点的软输出值确定为路径判定级的节点的路径度量差异值,路径判定级的节点的路径量度差异值的函数 以及并发决策阶段节点的存储路径度量差异值,以及存活决策阶段节点的存储路径度量差异值。 还公开了相应的计算机程序产品,解码器和通信设备。
    • 36. 发明授权
    • Method and arrangement of processing a packet of a HARQ system
    • US10205561B2
    • 2019-02-12
    • US13382560
    • 2010-07-05
    • Matthias KamufBo Lincoln
    • Matthias KamufBo Lincoln
    • H04L1/18
    • A method for an electronic receiver of processing a packet of a hybrid automatic repeat request (HARQ) system is disclosed. The method comprises receiving a first transmission of the packet, wherein the first transmission comprises a first plurality of soft symbol values and determining whether the first plurality of soft symbol values meets a stop criterion. If it is determined that the first plurality of soft symbol values does not meet the stop criterion, a subject of the first plurality of soft symbol values is determined, wherein the subset comprises a number of soft symbol values of the first plurality of soft symbol values, the number being greater than zero and less than the first plurality. The subset of the first plurality of soft symbol values is stored in a HARQ buffer. A second plurality of soft symbol values, comprised in a second transmission of the packet received by the electronic receiver, is combined with the stored subset of the first plurality of soft symbol values to produce a third plurality of combined soft symbol values. Corresponding arrangement, receiver, device, and computer program product are also disclosed.
    • 40. 发明授权
    • Parity bit soft estimation method and apparatus
    • 奇偶位软估计方法和装置
    • US08161358B2
    • 2012-04-17
    • US12245963
    • 2008-10-06
    • Matthias KamufAndres Reial
    • Matthias KamufAndres Reial
    • H03M13/00
    • H04L1/0045H04L1/005H04L25/03318
    • The systematic and parity bits of a symbol are tightly coupled to each other based on the way in which the symbol is encoded. The relationship between the systematic and parity bits can be exploited to improve the accuracy of soft bit estimation for both the systematic bits and parity bits. In one embodiment, a received symbol is processed by demodulating the received symbol to determine an initial soft estimate of each systematic bit and corresponding one or more parity bits in the sequence. The systematic bit sequence is iteratively decoded to revise the soft estimate of the systematic bit. The initial soft estimate of the one or more parity bits associated with each systematic bit is revised based on the revised soft estimate of each systematic bit. The received symbol can be decoded or regenerated based on the revised soft estimate of each systematic bit and corresponding one or more parity bits.
    • 基于符号被编码的方式,符号的系统和奇偶校验位彼此紧密耦合。 可以利用系统和奇偶校验位之间的关系来提高系统位和奇偶校验位的软比特估计的精度。 在一个实施例中,通过对接收到的符号进行解调来处理接收到的符号,以确定序列中每个系统位和对应的一个或多个奇偶校验位的初始软估计。 对系统位序列进行迭代解码,以修正系统位的软估计。 基于每个系统位的修改的软估计,修正与每个系统位相关联的一个或多个奇偶校验位的初始软估计。 可以基于每个系统位的修改的软估计和对应的一个或多个奇偶校验位来解码或再生所接收的符号。