公开(公告)号：US08607125B2

公开(公告)日：2013-12-10

申请号：US11795826

申请日：2005-05-13

Applicant: Jun Xu ,  Liuqing Yuan ,  Liujun Hu

Inventor： Jun Xu ,  Liuqing Yuan ,  Liujun Hu

IPC: H03M13/00

CPC classification number: H03M13/033 ,  H03M13/1105 ,  H03M13/1148 ,  H03M13/118

Abstract: The codec includes an encoding/decoding operation module and a basic matrix storage module. In the stored basic matrix Hb, for all girths with length of 4, any column element of i, j, k or l constituting the girths in anti-clockwise or clockwise always satisfies inequality: (i−j+k−1) mod z≠0, wherein z is the extension factor. When generating the basic matrix, firstly the number of rows M, number of columns N, and weight vectors of the rows and columns are determined, an irregularly original basic matrix is constructed; then the position of ‘1’ is filled by a value chosen from set {0, 1, 2, . . . , z−1} to obtain the basic matrix Hb. The basic matrix Hb obtained by storing constitutes the desired encoder/decoder. The encoder/decoder according to the present invention can effectively eliminate error-floor phenomenon of LDPC codes and accelerate the falling speed of BER curve.

Abstract translation: 编解码器包括编码/解码操作模块和基本矩阵存储模块。 在存储的基本矩阵Hb中，对于长度为4的所有周长，构成反时针或顺时针的周长的i，j，k或l的任何列元素总是满足不等式：（i-j + k-1）mod z <> 0，其中z是扩展因子。 当生成基本矩阵时，首先确定行数M，列数N和行和列的加权向量，构建不规则原始基本矩阵; 那么'1'的位置由从{{0，1，2，...}中选择的值填充。 。 。 ，z-1}以获得基本矩阵Hb。 通过存储获得的基本矩阵Hb构成所需的编码器/解码器。 根据本发明的编码器/解码器可以有效地消除LDPC码的错误现象，加快BER曲线的下降速度。

公开(公告)号：US20130315183A1

公开(公告)日：2013-11-28

申请号：US13981717

申请日：2011-09-20

Applicant: Jiying Xiang ,  Guanghui Yu ,  Liujun Hu ,  Shijun Chen ,  Yanwei Wu ,  Zhaogang He ,  Xianming Zhao ,  Daxiong Xie

Inventor： Jiying Xiang ,  Guanghui Yu ,  Liujun Hu ,  Shijun Chen ,  Yanwei Wu ,  Zhaogang He ,  Xianming Zhao ,  Daxiong Xie

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0073 ,  H04W16/02 ,  H04W16/14 ,  H04W72/1215

Abstract: The disclosure discloses a method for sharing a frequency spectrum between a GSM system and a LTE system. The method includes: avoiding fixed channels of the LTE system of a current cell when allocating frequency points of the GSM system to the current cell and a neighbour cell interfering with the current cell; frequency domain resources allocated to users and indicated by Physical Downlink Share Channels (PDSCHs) and Physical Uplink Share Channels (PUSCHs) of the LTE system are not located on same frequency resources with frequency points of the GSM system of the current cell and the neighbour cell interfering with the current cell; and for Physical Control Format Indicator Channels (PCFICHs) and Physical Hybrid ARQ Indicator Channels (PHICHs) of the LTE system, avoiding the PCFICHs and the PHICHs of the LTE system when allocating frequency points of the GSM system to the current cell and the neighbour cell interfering with the current cell, or allocating, by the LTE system, an appropriate Cell Identification (CellID) to avoid the frequency points of the GSM system of the current cell and the neighbour cell interfering with the current cell. The disclosure further discloses a system for sharing a frequency spectrum. According to the method and the system of the disclosure, the GSM system is able to transit to the LTE system smoothly while frequency spectrum utilization is improved.

Abstract translation: 本公开公开了一种用于共享GSM系统和LTE系统之间的频谱的方法。 该方法包括：当将GSM系统的频点分配给当前小区和相邻小区干扰当前小区时，避免当前小区的LTE系统的固定信道; 分配给用户并由物理下行链路共享信道（PDSCH）和物理上行链路共享信道（PUSCH）指示的频域资源与当前小区和相邻小区的GSM系统的频点不在同一频率资源上 干扰当前单元格; 和用于LTE系统的物理控制格式指示符信道（PCFICH）和物理混合ARQ指示信道（PHICH），在将GSM系统的频点分配给当前小区和相邻小区时，避免了PCFICH和LTE系统的PHICH 干扰当前小区或由LTE系统分配适当的小区标识（CellID），以避免当前小区的GSM系统和相邻小区干扰当前小区的频点。 本公开还公开了一种用于共享频谱的系统。 根据本公开的方法和系统，GSM系统能够在频谱利用率提高的同时顺利地转移到LTE系统。

公开(公告)号：US08286063B2

公开(公告)日：2012-10-09

申请号：US12988643

申请日：2008-08-25

Applicant: Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Liujun Hu

Inventor： Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Liujun Hu

IPC: H03M13/00

CPC classification number: H04L1/0071 ,  H03M13/15 ,  H03M13/27 ,  H04L1/0057

Abstract: The present invention provides a decoding method and device for Reed-Solomon (RS) codes. The method includes the following steps: A: filling data to be decoded in a byte interleaver by column in turn; B: performing cyclic shift to data in a check region of the byte interleaver by row and/or by column, so as to make the data of each row in the check region become check data in sequence of data of corresponding row in an information region of the byte interleaver; C: performing RS decoding by row method, and writing information data of each row obtained after decoding into the corresponding row in the information region of the byte interleaver in turn; and D: reading business data of the decoded information data from the information region of the byte interleaver by column. The method and device of the present invention achieve the best interleaving effect.

Abstract translation: 本发明提供了一种用于里德 - 所罗门（RS）码的解码方法和装置。 该方法包括以下步骤：A：按列依次填充要在字节交织器中解码的数据; B：通过行和/或列对字节交织器的检查区域中的数据进行循环移位，以使检查区域中的每行的数据按照信息区域中的相应行的数据顺序成为检查数据 的字节交织器; C：通过行方法执行RS解码，并且将解码后获得的每行的信息数据依次写入字节交织器的信息区域中的对应行; 并且D：从字节交织器的信息区域中逐列读取解码信息数据的业务数据。 本发明的方法和装置实现了最佳的交织效果。

公开(公告)号：US20100281332A1

公开(公告)日：2010-11-04

申请号：US12810832

申请日：2008-06-12

Applicant: Jun Xu ,  Song Li ,  Jin Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Xiangbiao Yan ,  Liujun Hu

Inventor： Jun Xu ,  Song Li ,  Jin Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Xiangbiao Yan ,  Liujun Hu

IPC: H03M13/05 ,  G06F11/10

CPC classification number: H03M13/11 ,  H03M13/3761

Abstract: The present invention discloses an encoding method and device for Low Density Generator Matrix Codes (LDGC). Wherein, the method comprises: construct an LDGC mother code set using a plurality of LDGC with code rate R0 and different code lengths, wherein the LDGC mother code set has a uniform base matrix Gbuniform={(gi, jb)uniform}kb×nb; obtain length L of an intermediate variable according to a relationship between length K of an information bit sequence to be encoded in the LDGC mother code set and length L of the intermediate variable; obtain an expanding factor z for processing the base matrix using the length of the intermediate variable and the number of rows in the base matrix; process the base matrix using the expanding factor to obtain a binary generator matrix Gtmp, the front L rows and front L columns of which compose a triangular matrix; modify the binary generator matrix to obtain a modified binary generator matrix; take a matrix Gldgc composed of L rows and the front N+L−K columns of the modified binary generator matrix as a generator matrix of the information bit sequence to encode the information bit sequence.

Abstract translation: 本发明公开了一种低密度发生器矩阵码（LDGC）的编码方法和装置。 其中，该方法包括：使用多个LDGC构建LDGC母码集，码率为R0，码长不同，其中，LDGC母码组具有均匀的基本矩阵Gbuniform = {（gi，jb）uniform} kb×nb ; 根据LDGC母码组中要编码的信息比特序列的长度K与中间变量的长度L之间的关系，获得中间变量的长度L; 使用中间变量的长度和基本矩阵中的行数来获得用于处理基本矩阵的扩展因子z; 使用扩展因子处理基本矩阵以获得二进制生成矩阵Gtmp，其前L行和前L列组成三角矩阵; 修改二进制生成矩阵以获得修改后的二进制生成矩阵; 将由L行组成的矩阵Gldgc和修改后的二进制生成器矩阵的前N + L-K列作为信息比特序列的生成矩阵来编码信息比特序列。

公开(公告)号：US20100269010A1

公开(公告)日：2010-10-21

申请号：US12746756

申请日：2008-04-16

Applicant: Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Song Li ,  Liujun Hu

Inventor： Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Song Li ,  Liujun Hu

IPC: H03M13/05 ,  G06F11/10

CPC classification number: H03M13/116 ,  H03M13/118 ,  H03M13/6362 ,  H03M13/6516

Abstract: An encoding method, encoding device, decoding method and decoding device for low density generator matrix codes (LDGC) are disclosed. Wherein, the encoding method comprises: construct an LDGC mother code set using P LDGC with code rate R0 and different code lengths, wherein the LDGC mother code set has a uniform basic matrix Gbuniform wherein, R 0 = k b n b , kb denotes the number of rows and nb denotes the number of columns in the basic matrix; obtain length L of an intermediate variant according to length K of an information bit sequence to be encoded in the LDGC mother code set; modify and expand the basic matrix to obtain a generator matrix Gldgc using the length L of the intermediate variant and the number kb of rows in the basic matrix; and encode the information bit sequence to be encoded using a matrix Gldgc (1:L,1:N+L−K) composed of L rows and the front N+L−K columns of the generator matrix, wherein N denotes the length of the encoded information.

Abstract translation: 公开了一种用于低密度发生器矩阵码（LDGC）的编码方法，编码装置，解码方法和解码装置。 其编码方法包括：使用代码率R0和不同代码长度的P LDGC构建LDGC母码集，其中LDGC母码组具有均匀的基本矩阵，其中，R 0 = kbnb，kb表示行数 而nb表示基本矩阵中的列数; 根据要编码在LDGC母码组中的信息比特序列的长度K获得中间变体的长度L; 修改和扩展基本矩阵，以使用中间变体的长度L和基本矩阵中的行的数量kb来获得生成矩阵Gldgc; 并使用由L行构成的矩阵Gldgc（1：L，1：N + L-K）对生成矩阵的前N + L-K列进行编码的信息比特序列进行编码，其中，N表示 编码信息。

公开(公告)号：US10004070B2

公开(公告)日：2018-06-19

申请号：US13981717

申请日：2011-09-20

Applicant: Jiying Xiang ,  Guanghui Yu ,  Liujun Hu ,  Shijun Chen ,  Yanwei Wu ,  Zhaogang He ,  Xianming Zhao ,  Daxiong Xie

Inventor： Jiying Xiang ,  Guanghui Yu ,  Liujun Hu ,  Shijun Chen ,  Yanwei Wu ,  Zhaogang He ,  Xianming Zhao ,  Daxiong Xie

IPC: H04W72/04 ,  H04W72/12 ,  H04W16/02 ,  H04L5/00 ,  H04W16/14

CPC classification number: H04W72/0453 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0073 ,  H04W16/02 ,  H04W16/14 ,  H04W72/1215

Abstract: The disclosure discloses a method for sharing a frequency spectrum between a GSM system and a LTE system. The method includes: avoiding fixed channels of the LTE system of a current cell when allocating frequency points of the GSM system to the current cell and a neighbor cell interfering with the current cell; frequency domain resources allocated to users and indicated by Physical Downlink Share Channels (PDSCHs) and Physical Uplink Share Channels (PUSCHs) of the LTE system are not located on same frequency resources with frequency points of the GSM system of the current cell and the neighbor cell interfering with the current cell.

公开(公告)号：US08516334B2

公开(公告)日：2013-08-20

申请号：US12663050

申请日：2008-02-28

Applicant: Jun Xu ,  Zhifeng Yuan ,  Liujun Hu

Inventor： Jun Xu ,  Zhifeng Yuan ,  Liujun Hu

IPC: H03M13/00

CPC classification number: H04L1/007 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/255 ,  H03M13/356 ,  H03M13/618 ,  H03M13/6306 ,  H03M13/6393 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/1812

Abstract: The present invention discloses a method for channel coding and modulation mapping in HARQ of the LDPC code, comprising: performing structured LDPC encoding of an information bit sequence with a length of K input by a channel encoder, and sending a generated codeword to a HARQ buffer; rearranging codeword bits of a LDPC HARQ mother code in the HARQ buffer, and sequentially selecting codeword bits to generate a binary sequence of a HARQ packet; mapping codeword bits of the HARQ packet to a constellation, and high-significant bits in encoding blocks of the HARQ packet being mapped to high reliability bits in the constellation. The present invention provides the LDPC codeword with the maximal constellation gain, so that the LDPC HARQ channel encoding has the optimal performance.

Abstract translation: 本发明公开了一种用于LDPC码的HARQ中的信道编码和调制映射的方法，包括：对由信道编码器输入的长度为K的信息比特序列执行结构化LDPC编码，并将生成的码字发送到HARQ缓冲器 ; 在HARQ缓冲器中重新排列LDPC HARQ母码的码字比特，并且顺序地选择码字比特以生成HARQ分组的二进制序列; 将HARQ分组的码字比特映射到星座，并且HARQ分组的编码块中的高有效比特被映射到星座中的高可靠性比特。 本发明提供具有最大星座增益的LDPC码字，使得LDPC HARQ信道编码具有最佳性能。

公开(公告)号：US08370700B2

公开(公告)日：2013-02-05

申请号：US12746181

申请日：2008-02-21

Applicant: Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Song Li ,  Liujun Hu

Inventor： Jin Xu ,  Jun Xu ,  Zhifeng Yuan ,  Yuanli Fang ,  Song Li ,  Liujun Hu

IPC: H03M13/00

CPC classification number: H03M13/116 ,  H03M13/118 ,  H03M13/6362 ,  H03M13/6516

Abstract: The present invention discloses a coding method, a coding device, a decoding method and a decoding device for low density generator matrix codes. Wherein the coding method includes: constructing the mother code set of the low density generator matrix code using P low density generator matrix codes of different code lengths at a code rate R0, wherein the mother code set of the low density generator matrix code has a uniform basic matrix Gbuniform, R 0 = k b n b , where kb is the row number of the basic matrix and nb is the column number of the basic matrix; obtaining the length L of an intermediate variable according to the relationship between the length K of the information bit sequence to be coded in the mother code set of the low density generator matrix code and the length L of the intermediate variable; obtaining an expansion factor zk for processing the basic matrix using the length L of the intermediate variable and the row number kb of the basic matrix, and obtaining a generator matrix Gldgc by modifying and expanding the basic matrix using the expansion factor zk; and coding the information bit sequence to be coded using a matrix Gldgc(1:L,1:N+L−K) comprised of L rows and the first N+L−K columns of the generator matrix.

Abstract translation: 本发明公开了一种用于低密度发生器矩阵码的编码方法，编码装置，解码方法和解码装置。 其编码方法包括：以码率R0，利用不同码长的P个低密度发生器矩阵码构造低密度发生器矩阵码的母码组，其中低密度发生器矩阵码的母码组具有均匀 基本矩阵Gbuniform，R 0 = kbnb，其中kb是基本矩阵的行号，nb是基本矩阵的列数; 根据低密度发生器矩阵码的母码组中的要编码的信息比特序列的长度K与中间变量的长度L之间的关系，获得中间变量的长度L; 使用中间变量的长度L和基本矩阵的行数kb来获得用于处理基本矩阵的扩展因子zk，并且通过使用扩展因子zk修改和扩展基本矩阵来获得生成矩阵Gldgc; 并使用由L行构成的矩阵Gldgc（1：L，1：N + L-K）对发生器矩阵的第一N + L-K列进行编码的信息位序列进行编码。

公开(公告)号：US08279741B2

公开(公告)日：2012-10-02

申请号：US12677260

申请日：2008-05-04

Applicant: Zhifeng Yuan ,  Jun Xu ,  Song Li ,  Xiangbiao Yan ,  Yuanli Fang ,  Jin Xu ,  Liujun Hu

Inventor： Zhifeng Yuan ,  Jun Xu ,  Song Li ,  Xiangbiao Yan ,  Yuanli Fang ,  Jin Xu ,  Liujun Hu

IPC: H04J9/00 ,  H03M13/00

CPC classification number: H03M13/1515 ,  H03M13/271

Abstract: The present invention provides a device and method for interleaved encoding RS code, the RS code used being RS (N, K, S). The method comprises: firstly, writing the data in the data packets to be RS interleaved encoded into the information region of the RS code byte interleaver column-by-column in turn; then, constructing the data of each row of the check region based on the data written into the information region; finally, performing cyclic shifting processing on the data of the check region, and reading out the data of the check region in the RS code byte interleaver column-by-column in turn. The present invention can be used to improve the performance of the entire data packet outputted, thereby enhancing the reliability of the data link layer, by evenly spreading the areas with a filled value of 0 in the last column of the information region that is filled with valid information and by performing cyclic shifting processing on the data of the check region so that the data of that region offer larger time span and good diversity effect when outputted.

Abstract translation: 本发明提供了一种用于交织编码RS码的装置和方法，所用的RS码是RS（N，K，S）。 该方法包括：首先依次将数据包中的数据进行RS交织编码到RS码字节交织器的信息区域; 然后，基于写入信息区域的数据构建检查区域的各行的数据; 最后，对检查区域的数据执行循环移位处理，并依次读出RS码字节交织器中的检查区域的数据。 本发明可以用于提高输出的整个数据分组的性能​​，从而通过在填充有信息区域的最后一列中均匀地扩展填充值为0的区域来提高数据链路层的可靠性 通过对检查区域的数据执行循环移位处理，使得该区域的数据在输出时提供较大的时间跨度和良好的分集效应。

公开(公告)号：US20110188414A1

公开(公告)日：2011-08-04

申请号：US12674336

申请日：2008-10-23

Applicant: Bo Dai ,  Shuqiang Xia ,  Peng Hao ,  Chunli Liang ,  Guanghui Yu ,  Liujun Hu ,  Bin Yu

Inventor： Bo Dai ,  Shuqiang Xia ,  Peng Hao ,  Chunli Liang ,  Guanghui Yu ,  Liujun Hu ,  Bin Yu

IPC: H04J3/02

CPC classification number: H04B7/2656 ,  H04L27/2602 ,  H04W48/12

Abstract: A signal transmission method in a Time Division Duplex (TDD) system is disclosed. The method comprises following steps: within a time length of a half-frame of a radio frame, base station transmits signal on a downlink special time slot, thereafter does not transmit signal on a Guard Period (GP), and then receives signal on an uplink special time slot; all time lengths of other uplink or downlink normal time slots for transmitting signal are equal; the total time length of the downlink special time slot, the guard period and the uplink special time slot is integer times of the time length of an uplink or downlink normal time slot. In addition, a frame structure adopted in the TDD system which corresponds to the method is disclosed. The present invention makes it flexible to set the duration of the GP and it is guaranteed that, even if a synchronization signal adopts power promotion, it will not bring great interference to uplink reception of other base stations; in addition, the utilization efficiency of the system is improved.

Abstract translation: 公开了时分双工（TDD）系统中的信号传输方法。 该方法包括以下步骤：在无线帧的半帧的时间长度内，基站在下行专用时隙发送信号，之后不在保护周期（GP）上发送信号，然后在 上行专用时隙; 用于发送信号的其他上行链路或下行链路正常时隙的所有时间长度相等; 下行专用时隙的总时间长度，保护周期和上行专用时隙是上行链路或下行链路正常时隙的时间长度的整数倍。 另外，公开了对应于该方法的TDD系统采用的帧结构。 本发明灵活设置GP的持续时间，并且保证即使同步信号采用功率提升，也不会对其他基站的上行接收带来很大的干扰; 此外，系统的利用效率得到提高。