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    • 1. 发明授权
    • Method for recovery of lost and/or corrupted data
    • 恢复丢失和/或损坏的数据的方法
    • US08438462B2
    • 2013-05-07
    • US12848495
    • 2010-08-02
    • Gianluigi Liva
    • Gianluigi Liva
    • H03M13/03
    • H04L1/0059H03M13/09H03M13/1154H03M13/373H04L1/0045
    • A method for recovery of lost and/or corrupted data, whereby this data is encoded by means of an encoder connected to the transmitter device and transmitted via a transmission channel to the receiver device. The transmitted data is decoded by means of a decoder connected to the receiver device wherein lost and/or corrupted data is restored during decoding. Encoding and decoding are performed by using a convolutional code. According to the disclosure the window size, on which the decoder connected to the receiver device operates, is variable so that the window size can be adapted to the erasure rate of the transmission channel and/or to the delay service requirement.
    • 一种用于恢复丢失和/或损坏的数据的方法,由此该数据通过连接到发射机设备并通过传输信道传输到接收机设备的编码器进行编码。 传输的数据通过连接到接收机设备的解码器进行解码,其中在解码期间丢失和/或损坏的数据被恢复。 通过使用卷积码来执行编码和解码。 根据该公开,连接到接收机设备的解码器工作的窗口大小是可变的,使得窗口大小可以适应于传输信道的擦除率和/或延迟服务需求。
    • 2. 发明申请
    • Method for recovery of lost and/or corrupted data
    • 恢复丢失和/或损坏的数据的方法
    • US20090292966A1
    • 2009-11-26
    • US12386486
    • 2009-04-17
    • Gianluigi LivaBalázs Matuz
    • Gianluigi LivaBalázs Matuz
    • H03M13/05G06F11/10
    • H04L1/005H04L1/0054H04L1/0057
    • A method for recovery of lost and/or corrupted data transmitted from a transmitter device to a receiver device. The data is coded by an encoder connected to the transmitter device. The data is transmitted from the transmitter device to the receiver device via a transmission system and is decoded by means of a decoder connected to the receiver device. This is performed through application of a low density parity check method, wherein lost and/or corrupted data is restored during decoding. The decoding is performed by solving the equation system of the parity check matrix H. The parity check matrix H is brought into a triangular form by column and/or row permutations. Columns of a sub-matrix B of the matrix H which impede the triangulation process are shifted into a sub-matrix P of the matrix H so that the triangulation process can be continued until the matrix H except for the sub-matrix P has been completely brought into a triangular form. The Gaussian elimination method is applied to a part of the sub-matrix P. The selection of the column or columns of the sub-matrix B which are to be shifted into the sub-matrix P is performed on the basis of the weight of the column which corresponds to the number of non-zero-entries in the column, and/or on the basis of the weight of the rows of the sub-matrix B connected to the column.
    • 一种用于恢复从发射机设备发送到接收机设备的丢失和/或损坏的数据的方法。 数据由连接到发射机设备的编码器编码。 数据通过传输系统从发射机设备发送到接收机设备,并通过连接到接收机设备的解码器进行解码。 这通过应用低密度奇偶校验方法来执行,其中在解码期间恢复丢失和/或损坏的数据。 通过求解奇偶校验矩阵H的等式系统来执行解码。奇偶校验矩阵H通过列和/或行排列形成三角形。 阻止三角测量处理的矩阵H的子矩阵B的列被移位到矩阵H的子矩阵P中,使得可以继续三角测量处理直到除了子矩阵P之外的矩阵H已经完全 带入三角形。 高斯消除方法被应用于子矩阵P的一部分。要移位到子矩阵P中的子矩阵B的列或列的选择是基于 列,其对应于列中的非零项的数量,和/或基于连接到列的子矩阵B的行的权重。
    • 5. 发明授权
    • Method for recovery of lost and/or corrupted data
    • US08413008B2
    • 2013-04-02
    • US12386486
    • 2009-04-17
    • Gianluigi LivaBalázs Matuz
    • Gianluigi LivaBalázs Matuz
    • H03M13/00
    • H04L1/005H04L1/0054H04L1/0057
    • A method for recovery of lost and/or corrupted data transmitted from a transmitter device to a receiver device. The data is coded by an encoder connected to the transmitter device. The data is transmitted from the transmitter device to the receiver device via a transmission system and is decoded by means of a decoder connected to the receiver device. This is performed through application of a low density parity check method, wherein lost and/or corrupted data is restored during decoding. The decoding is performed by solving the equation system of the parity check matrix H. The parity check matrix H is brought into a triangular form by column and/or row permutations. Columns of a sub-matrix B of the matrix H which impede the triangulation process are shifted into a sub-matrix P of the matrix H so that the triangulation process can be continued until the matrix H except for the sub-matrix P has been completely brought into a triangular form. The Gaussian elimination method is applied to a part of the sub-matrix P. The selection of the column or columns of the sub-matrix B which are to be shifted into the sub-matrix P is performed on the basis of the weight of the column which corresponds to the number of non-zero-entries in the column, and/or on the basis of the weight of the rows of the sub-matrix B connected to the column.
    • 7. 发明授权
    • Method for contention resolution in time-hopping or frequency-hopping
    • 跳频或跳频中争用解决方法
    • US08340132B2
    • 2012-12-25
    • US12903246
    • 2010-10-13
    • Gianluigi Liva
    • Gianluigi Liva
    • H04J3/24
    • H04B1/715H04B2001/6908H04L1/0057H04L1/0083H04L1/0084H04L1/16
    • A method of transmitting data, whereby the data is transmitted by using a multiple access frame divided in logical slots. Each data packet is divided into k units which are decoded by an (n,k) decoder, producing n−k redundant units. The n units are transmitted within a multiple access frame in n different slots according to a time-hopping pattern, a frequency-hopping pattern or a combination of both.At the receiver side lost or corrupted data packets are recovered by using the redundant units, whereby the presence of a unit for each slot is detected. If a unit is present in a slot and has been transmitted without collisions, this unit is recovered. If a sufficient k+δ amount of units composing a data packet is recovered, the packet level decoder is used to recover the remaining n−k−δ units which experienced collisions in the respective slots.
    • 一种发送数据的方法,由此通过使用以逻辑时隙划分的多址帧来发送数据。 每个数据分组被划分为由(n,k)个解码器解码的k个单元,产生n-k个冗余单元。 根据跳时图案,跳频图案或两者的组合,n个单元在n个不同时隙内的多址接入帧内传输。 在接收机侧,通过使用冗余单元恢复丢失或损坏的数据分组,由此检测每个时隙的单元的存在。 如果一个单元存在于一个插槽中并且没有发生冲突的传输,则该单元被恢复。 如果恢复构成数据包的单位的足够的k +δ量,则使用分组级解码器来恢复在各个时隙中经历冲突的剩余n-k-δ个单元。
    • 8. 发明申请
    • METHOD FOR RECOVERY OF LOST AND/OR CORRUPTED DATA
    • 用于恢复丢失和/或腐败数据的方法
    • US20110047445A1
    • 2011-02-24
    • US12848495
    • 2010-08-02
    • Gianluigi Liva
    • Gianluigi Liva
    • H03M13/03G06F11/10
    • H04L1/0059H03M13/09H03M13/1154H03M13/373H04L1/0045
    • A method for recovery of lost and/or corrupted data, whereby this data is encoded by means of an encoder connected to the transmitter device and transmitted via a transmission channel to the receiver device. The transmitted data is decoded by means of a decoder connected to the receiver device wherein lost and/or corrupted data is restored during decoding. Encoding and decoding are performed by using a convolutional code. According to the disclosure the window size, on which the decoder connected to the receiver device operates, is variable so that the window size can be adapted to the erasure rate of the transmission channel and/or to the delay service requirement.
    • 一种用于恢复丢失和/或损坏的数据的方法,由此该数据通过连接到发射机设备并通过传输信道传输到接收机设备的编码器进行编码。 传输的数据通过连接到接收机设备的解码器进行解码,其中在解码期间丢失和/或损坏的数据被恢复。 通过使用卷积码来执行编码和解码。 根据该公开,连接到接收机设备的解码器工作的窗口大小是可变的,使得窗口大小可以适应于传输信道的擦除率和/或延迟服务需求。