公开(公告)号：US08576696B2

公开(公告)日：2013-11-05

申请号：US13148242

申请日：2010-02-01

申请人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

发明人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

IPC分类号： H04J11/00

CPC分类号： H04L5/0007 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0064 ,  H04L27/2607

摘要： A mobile multimedia broadcast transmission system is provided, which comprises: a Reed-Solomon (RS) coding and byte interleaving unit, a Low Density Parity Check (LDPC) coder, a bit interleaver, a constellation mapping unit, a frequency domain symbol generator, a scrambler, an Inverse Fast Fourier Transform (IFFT) unit, a time domain framing unit, and a transmitter. According to the technical solutions provided in the present invention, the system can provide high-quality mobile multimedia services for users in a 6 MHz operation bandwidth. Furthermore, an optimized selection is performed on RS coding according to the operation bandwidth of the system, thereby selecting an appropriate coding mode according to different channel conditions. Accordingly, the byte interleaver is optimized, such that suitable interleaving parameters can be used to perform byte interleaving. With the technical solutions provided in the present invention, the continuous pilots, the discrete pilots and the digital sub-carriers of the system can be suitably configured and allocated according to the actual bandwidth of the system, thereby suitably configuring the system overhead of the mobile multimedia broadcast transmission system to efficiently utilize spectral resources for data transmission.

摘要翻译： 提供一种移动多媒体广播传输系统，其包括：里德 - 所罗门（RS）编码和字节交织单元，低密度奇偶校验（LDPC）编码器，比特交织器，星座映射单元，频域符号发生器， 扰频器，快速傅里叶逆变换（IFFT）单元，时域成帧单元和发射机。 根据本发明提供的技术方案，该系统可以为6MHz操作带宽的用户提供高质量的移动多媒体业务。 此外，根据系统的操作带宽对RS编码进行优化选择，从而根据不同的信道条件选择适当的编码模式。 因此，字节交织器被优化，使得适当的交织参数可以用于执行字节交织。 利用本发明提供的技术方案，可以根据系统的实际带宽适当地配置和分配系统的连续导频，离散导频和数字子载波，从而适当地配置移动台的系统开销 多媒体广播传输系统，有效利用频谱资源进行数据传输。

公开(公告)号：US20110299381A1

公开(公告)日：2011-12-08

申请号：US13148242

申请日：2010-02-01

申请人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

发明人： Qihong Ge ,  Dong Bai ,  Tao Tao ,  Qiusheng Wang ,  Wen Chen

IPC分类号： H04J11/00

CPC分类号： H04L5/0007 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0064 ,  H04L27/2607

摘要： A mobile multimedia broadcast transmission system is provided, which comprises: a Reed-Solomon (RS) coding and byte interleaving unit, a Low Density Parity Check (LDPC) coder, a bit interleaver, a constellation mapping unit, a frequency domain symbol generator, a scrambler, an Inverse Fast Fourier Transform (IFFT) unit, a time domain framing unit, and a transmitter. According to the technical solutions provided in the present invention, the system can provide high-quality mobile multimedia services for users in a 6 MHz operation bandwidth. Furthermore, an optimized selection is performed on RS coding according to the operation bandwidth of the system, thereby selecting an appropriate coding mode according to different channel conditions. Accordingly, the byte interleaver is optimized, such that suitable interleaving parameters can be used to perform byte interleaving. With the technical solutions provided in the present invention, the continuous pilots, the discrete pilots and the digital sub-carriers of the system can be suitably configured and allocated according to the actual bandwidth of the system, thereby suitably configuring the system overhead of the mobile multimedia broadcast transmission system to efficiently utilize spectral resources for data transmission.

摘要翻译： 提供一种移动多媒体广播传输系统，其包括：里德 - 所罗门（RS）编码和字节交织单元，低密度奇偶校验（LDPC）编码器，比特交织器，星座映射单元，频域符号发生器， 扰频器，快速傅里叶逆变换（IFFT）单元，时域成帧单元和发射机。 根据本发明提供的技术方案，该系统可以为6MHz操作带宽的用户提供高质量的移动多媒体业务。 此外，根据系统的操作带宽对RS编码进行优化选择，从而根据不同的信道条件选择适当的编码模式。 因此，字节交织器被优化，使得适当的交织参数可以用于执行字节交织。 利用本发明提供的技术方案，可以根据系统的实际带宽适当地配置和分配系统的连续导频，离散导频和数字子载波，从而适当地配置移动台的系统开销 多媒体广播传输系统，有效利用频谱资源进行数据传输。

公开(公告)号：US07978593B2

公开(公告)日：2011-07-12

申请号：US12310037

申请日：2006-11-24

申请人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

发明人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

IPC分类号： H04J11/00

CPC分类号： H04L5/0094 ,  H04L5/0007

摘要： A method for transmitting control information to indicate a receiver, comprising following steps: the control information is formed at transmitting side and is encoded based on the working status of the transmitting side of the system; after the encoded control information is mapped, it is multiplexed with other pilot symbol and service load, then an OFDM symbol is generated; the OFDM symbol is transformed from frequency domain to time domain, then a time domain sampling signal is obtained and transmitted to the receiving side of the system; at the receiving side, the time domain sampling signal transmitted by the transmitting side is received and transformed from time domain to frequency domain to form OFDM symbol; the control information is obtained from the valid sub carrier of the OFDM symbol, and the control information is decoded; each work information is extracted form the decoded control information, and the receiving terminal is indicated to execute respective receive process based on the extracted work information. The method can ensure the receiving terminal to receive data based on its own expectation, then reduces the work power consumption of the receiving terminal, and saves the run cost of the digital broadcast system.

摘要翻译： 一种用于发送控制信息以指示接收机的方法，包括以下步骤：控制信息形成在发送侧，并根据系统的发送侧的工作状态进行编码; 编码控制信息映射后，与其他导频符号和业务负载进行复用，生成OFDM符号; OFDM符号从频域变换为时域，得到时域采样信号并将其发送到系统的接收端; 在接收侧，从发送侧发送的时域采样信号从时域到频域被接收并变换为OFDM符号; 从OFDM符号的有效子载波获得控制信息，对该控制信息进行解码; 从解码控制信息中提取每个工作信息，并且基于所提取的工作信息指示接收终端执行相应的接收处理。 该方法可以确保接收终端根据自己的期望接收数据，降低接收终端的工作功耗，节省数字广播系统的运行成本。

公开(公告)号：US20110044390A1

公开(公告)日：2011-02-24

申请号：US12446076

申请日：2006-11-16

申请人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

发明人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

IPC分类号： H04L27/28

CPC分类号： H04J13/102 ,  H04B1/7075 ,  H04B1/709 ,  H04J13/0025 ,  H04J13/0051

摘要： A system and method for generating and detecting identifier sequence of a bandwidth-limited transmitter are disclosed, comprising an identifier sequence generating portion and a detection portion. The identifier sequence generating portion comprises: generating a frequency-domain random sequence; generating a frequency-domain orthogonal sequence; performing frequency-domain truncation; performing frequency-time transformation; and performing cycle extension. The identifier sequence receiving portion comprises: truncating the time-domain for the received signal; performing time-frequency domain transformation to obtain a frequency-domain signal; generating frequency-domain random sequence; generating a frequency-domain orthogonal sequence; correlating the frequency-domain orthogonal sequence with the frequency-domain signal de-scrambled by the frequency-domain random sequence; and detecting an output from a frequency-domain correlator by a threshold detecting device and determining the transmitter identifier sequence. The random sequence bandwidth generated by the system and the method of the present invention can be configured flexibly according to transmission bandwidth requirement, and the sequence may be arbitrarily allocated at the power of each frequency point inside the bandwidth. The present invention may be widely applied to multimedia broadcasting, terrestrial radio broadcasting, cable broadcasting and the like.

摘要翻译： 公开了一种用于产生和检测带宽限制发射机的标识符序列的系统和方法，包括标识符序列产生部分和检测部分。 标识符序列生成部分包括：产生频域随机序列; 产生频域正交序列; 执行频域截断; 执行频率 - 时间变换; 并执行循环扩展。 标识符序列接收部分包括：截断接收信号的时域; 执行时频域变换以获得频域信号; 产生频域随机序列; 产生频域正交序列; 将频域正交序列与由频域随机序列解扰的频域信号相关; 以及通过阈值检测装置检测来自频域相关器的输出，并确定发射机标识符序列。 系统生成的随机序列带宽和本发明的方法可以根据传输带宽要求灵活配置，并且该序列可以以带宽内的每个频点的功率任意分配。 本发明可以广泛地应用于多媒体广播，地面广播，有线广播等。

公开(公告)号：US08335963B2

公开(公告)日：2012-12-18

申请号：US12446084

申请日：2006-11-16

申请人： Dong Bai ,  Binbin Liu ,  Tao Tao ,  Qihong Ge ,  Wen Chen ,  Huishi Song ,  Qun Li ,  Hongbing Shen ,  Qinghua Yang

发明人： Dong Bai ,  Binbin Liu ,  Tao Tao ,  Qihong Ge ,  Wen Chen ,  Huishi Song ,  Qun Li ,  Hongbing Shen ,  Qinghua Yang

IPC分类号： H03M13/00

CPC分类号： H03M13/1105 ,  H03M13/033 ,  H03M13/116 ,  H03M13/616 ,  H04L1/0057

摘要： The present invention relates to a method for constructing LPDC code check matrix and encoding and decoding devices using the same. The present invention constructs the LDPC code check matrix using an algebraic structure, obtaining the LDPC code with stable performance.

摘要翻译： 本发明涉及一种用于构建LPDC码校验矩阵并使用其编码和解码装置的方法。 本发明使用代数结构构造LDPC码校验矩阵，获得具有稳定性能的LDPC码。

公开(公告)号：US08139622B2

公开(公告)日：2012-03-20

申请号：US12446076

申请日：2006-11-16

申请人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

发明人： Junwei Wang ,  Qihong Ge ,  Tao Tao ,  Dong Bai ,  Wen Chen ,  Qinghua Yang ,  Qun Li

IPC分类号： H04B1/00

CPC分类号： H04J13/102 ,  H04B1/7075 ,  H04B1/709 ,  H04J13/0025 ,  H04J13/0051

摘要： A system and method for generating and detecting identifier sequence of a bandwidth-limited transmitter are disclosed, comprising an identifier sequence generating portion and a detection portion. The identifier sequence generating portion comprises: generating a frequency-domain random sequence; generating a frequency-domain orthogonal sequence; performing frequency-domain truncation; performing frequency-time transformation; and performing cycle extension. The identifier sequence receiving portion comprises: truncating the time-domain for the received signal; performing time-frequency domain transformation to obtain a frequency-domain signal; generating frequency-domain random sequence; generating a frequency-domain orthogonal sequence; correlating the frequency-domain orthogonal sequence with the frequency-domain signal de-scrambled by the frequency-domain random sequence; and detecting an output from a frequency-domain correlator by a threshold detecting device and determining the transmitter identifier sequence. The random sequence bandwidth generated by the system and the method of the present invention can be configured flexibly according to transmission bandwidth requirement, and the sequence may be arbitrarily allocated at the power of each frequency point inside the bandwidth. The present invention may be widely applied to multimedia broadcasting, terrestrial radio broadcasting, cable broadcasting and the like.

摘要翻译： 公开了一种用于产生和检测带宽限制发射机的标识符序列的系统和方法，包括标识符序列产生部分和检测部分。 标识符序列生成部分包括：产生频域随机序列; 产生频域正交序列; 执行频域截断; 执行频率 - 时间变换; 并执行循环扩展。 标识符序列接收部分包括：截断接收信号的时域; 执行时频域变换以获得频域信号; 产生频域随机序列; 产生频域正交序列; 将频域正交序列与由频域随机序列解扰的频域信号相关; 以及通过阈值检测装置检测来自频域相关器的输出，并确定发射机标识符序列。 系统生成的随机序列带宽和本发明的方法可以根据传输带宽要求灵活配置，并且该序列可以以带宽内的每个频点的功率任意分配。 本发明可以广泛地应用于多媒体广播，地面广播，有线广播等。

公开(公告)号：US20110051825A1

公开(公告)日：2011-03-03

申请号：US12446054

申请日：2006-11-15

申请人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

发明人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

IPC分类号： H04L27/28

CPC分类号： H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2626

摘要： The present invention discloses a multi-carrier digital multimedia broadcast system and the digital information transmission method thereof. After RS encoding and byte interleaving, LDPC encoding, bit interleaving and constellation mapping to an upper layer of data streams in turn, the obtained data symbol is multiplexed with scattered pilots and continual pilots which include the system information to form an OFDM frequency domain symbol and scrambled; an OFDM time domain symbol is generated by IFFT transforming, and after inserted with the frame head to build a time slot, it is connected to form a signal frame of the physical layer; the signal frame of the physical layer is transmitted after being low-pass filtered and orthogonal upconverted. The system and method thereof provide wireless broadcast with high quality such as audio, video and multimedia data and the like for mobile, fixed and portable receivers, and can use the satellite transmission and terrestrial transmission method for transmitting. The method utilizes the LDPC OFDM scheme, and the system applies the microwave and large scale integrated circuit technologies while fulfills the needs for low cast and high performance.

摘要翻译： 本发明公开了一种多载波数字多媒体广播系统及其数字信息传输方法。 在RS编码和字节交织之后，将LDPC编码，比特交织和星座映射依次转换成数据流的上层，所获得的数据符号与包括系统信息的散射导频和连续导频复用以形成OFDM频域符号， 炒了 通过IFFT变换生成OFDM时域符号，并且在插入帧头以构建时隙之后，连接形成物理层的信号帧; 物理层的信号帧经过低通滤波和正交上变频后传输。 其系统和方法为移动，固定和便携式接收机提供高质量的无线广播，例如音频，视频和多媒体数据等，并且可以使用卫星传输和地面传输方法进行传输。 该方法采用LDPC OFDM方案，系统应用微波和大规模集成电路技术，同时满足低速和高性能的需要。

公开(公告)号：US20100027695A1

公开(公告)日：2010-02-04

申请号：US12310037

申请日：2006-11-24

申请人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

发明人： Fajun Yan ,  Tao Tao ,  Wen Chen ,  Qihong Ge ,  Dong Bai ,  Qinghua Yang

IPC分类号： H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007

摘要： A method for transmitting control information to indicate a receiver, comprising following steps: the control information is formed at transmitting side and is encoded based on the working status of the transmitting side of the system; after the encoded control information is mapped, it is multiplexed with other pilot symbol and service load, then an OFDM symbol is generated; the OFDM symbol is transformed from frequency domain to time domain, then a time domain sampling signal is obtained and transmitted to the receiving side of the system; at the receiving side, the time domain sampling signal transmitted by the transmitting side is received and transformed from time domain to frequency domain to form OFDM symbol; the control information is obtained from the valid sub carrier of the OFDM symbol, and the control information is decoded; each work information is extracted form the decoded control information, and the receiving terminal is indicated to execute respective receive process based on the extracted work information. The method can ensure the receiving terminal to receive data based on its own expectation, then reduces the work power consumption of the receiving terminal, and saves the run cost of the digital broadcast system.

摘要翻译： 一种用于发送控制信息以指示接收机的方法，包括以下步骤：控制信息形成在发送侧，并根据系统的发送侧的工作状态进行编码; 编码控制信息映射后，与其他导频符号和业务负载进行复用，生成OFDM符号; OFDM符号从频域变换为时域，得到时域采样信号并将其发送到系统的接收端; 在接收侧，从发送侧发送的时域采样信号从时域到频域被接收并变换为OFDM符号; 从OFDM符号的有效子载波获得控制信息，对该控制信息进行解码; 从解码控制信息中提取每个工作信息，并且基于所提取的工作信息指示接收终端执行相应的接收处理。 该方法可以确保接收终端根据自己的期望接收数据，降低接收终端的工作功耗，节省数字广播系统的运行成本。

公开(公告)号：US08428160B2

公开(公告)日：2013-04-23

申请号：US12446054

申请日：2006-11-15

申请人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Huishi Song ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

发明人： Tao Tao ,  Dong Bai ,  Qihong Ge ,  Huishi Song ,  Wen Chen ,  Yibin Liang ,  Qinghua Yang ,  Lian Wang ,  Qun Li ,  Hongbing Shen

IPC分类号： H01K1/10

CPC分类号： H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2626

摘要： The present invention discloses a multi-carrier digital multimedia broadcast system and the digital information transmission method thereof. After RS encoding and byte interleaving, LDPC encoding, bit interleaving and constellation mapping to an upper layer of data streams in turn, the obtained data symbol is multiplexed with scattered pilots and continual pilots which include the system information to form an OFDM frequency domain symbol and scrambled; an OFDM time domain symbol is generated by IFFT transforming, and after inserted with the frame head to build a time slot, it is connected to form a signal frame of the physical layer; the signal frame of the physical layer is transmitted after being low-pass filtered and orthogonal upconverted. The system and method thereof provide wireless broadcast with high quality such as audio, video and multimedia data and the like for mobile, fixed and portable receivers, and can use the satellite transmission and terrestrial transmission method for transmitting. The method utilizes the LDPC OFDM scheme, and the system applies the microwave and large scale integrated circuit technologies while fulfills the needs for low cast and high performance.

摘要翻译： 本发明公开了一种多载波数字多媒体广播系统及其数字信息传输方法。 在RS编码和字节交织之后，将LDPC编码，比特交织和星座映射依次转换成数据流的上层，所获得的数据符号与包括系统信息的散射导频和连续导频复用以形成OFDM频域符号， 炒了 通过IFFT变换生成OFDM时域符号，并且在插入帧头以构建时隙之后，连接形成物理层的信号帧; 物理层的信号帧经过低通滤波和正交上变频后传输。 其系统和方法为移动，固定和便携式接收机提供高质量的无线广播，例如音频，视频和多媒体数据等，并且可以使用卫星传输和地面传输方法进行传输。 该方法采用LDPC OFDM方案，系统应用微波和大规模集成电路技术，同时满足低速和高性能的需要。

公开(公告)号：US20120173949A1

公开(公告)日：2012-07-05

申请号：US13395478

申请日：2010-08-11

申请人： Binbin Liu ,  Dong Bai ,  Qihong Ge ,  Tao Tao ,  Junwei Wang ,  Wen Chen

发明人： Binbin Liu ,  Dong Bai ,  Qihong Ge ,  Tao Tao ,  Junwei Wang ,  Wen Chen

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/116 ,  H03M13/036 ,  H03M13/118 ,  H04L1/0057

摘要： The embodiments of the present invention provide a method of constructing parity-check matrix of LDPC code. The method comprises the following steps of: constructing a MB×NB base matrix B for an LDPC code with code rate R and code length N, wherein MB=M/K, NB=N/K, M=N (1−R), K is the expansion factor of the base matrix, Kεφ, and φ is the set of the common factors of M and N; and replacing the elements of the base matrix B with a K×K matrix, and expanding the base matrix B into a parity-check matrix H with size of M×N for the encoding or decoding of the LDPC code. An encoding method and apparatus of LDPC code are also provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention can construct LDPC codes with good performance, solve the storage problem of the parity-check matrix, and effectively reduce the implementation complexity of the encoding apparatus.

摘要翻译： 本发明的实施例提供了一种构造LDPC码奇偶校验矩阵的方法。 该方法包括以下步骤：为码率为R和码长N的LDPC码构建MB×NB基本矩阵B，其中MB = M / K，NB = N / K，M = N（1-R） ，K是基本矩阵的扩展因子，K＆egr＆amp;＆phgr;和＆phgr; 是M和N的共同因素的集合; 并且用K×K矩阵代替基本矩阵B的元素，并且将基本矩阵B扩展成具有M×N大小的奇偶校验矩阵H以进行LDPC码的编码或解码。 本发明的实施例也提供了LDPC码的编码方法和装置。 本发明实施例提供的技术方案可以构建具有良好性能的LDPC码，解决奇偶校验矩阵的存储问题，有效降低编码装置的实现复杂度。