APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
    3.
    发明申请
    APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 有权
    在正交频分复用系统中降低平均功率比的峰值的装置和方法

    公开(公告)号:US20080298490A1

    公开(公告)日:2008-12-04

    申请号:US12133108

    申请日:2008-06-04

    IPC分类号: H04L27/28

    CPC分类号: H04L27/2618 H04L5/0048

    摘要: A method for reducing a Peak to Average Power Ratio (PAPR) using reserved tones in a transmission apparatus of an Orthogonal Frequency Division Multiplexing (OFDM) communication system is provided. The method includes detecting a subcarrier spacing interval and the number of spaced symbols based on a predetermined pilot pattern upon signal reception, and determining positions of shifted reserved tones obtained by shifting positions of reserved tones allocated to a predetermined symbol during the number of the spaced symbols at intervals of the spacing interval; determining an impulse waveform obtained by rotating a phase of a complex value of an impulse stored in a memory, using the determined positions of frequency-domain reserved tones of each symbol; calculating a subtrahend for a PAPR of an output signal using the phase-rotated impulse waveform; and reducing a PAPR of an input signal by performing a gradient algorithm using the phase-rotated impulse waveform.

    摘要翻译: 提供了一种在正交频分复用(OFDM)通信系统的发送装置中使用保留音降低峰均功率比(PAPR)的方法。 该方法包括在信号接收时基于预定导频模式检测子载波间隔间隔和间隔符号数,以及确定在间隔符号的数量期间通过移位分配给预定符号的保留音调的位置而获得的移位保留音的位置 间隔间隔的间隔; 使用确定的每个符号的频域保留音调的位置来确定通过旋转存储在存储器中的脉冲的复数值的相位而获得的脉冲波形; 使用相位旋转脉冲波形计算输出信号的PAPR的减数; 以及通过使用相位旋转的脉冲波形执行梯度算法来减小输入信号的PAPR。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN BROADCASTING SYSTEM
    4.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN BROADCASTING SYSTEM 有权
    在广播系统中发送和接收数据的方法和装置

    公开(公告)号:US20120327306A1

    公开(公告)日:2012-12-27

    申请号:US13532197

    申请日:2012-06-25

    IPC分类号: H04N5/40 H04N5/455

    摘要: Methods and apparatus are provided for transmitting data in a broadcasting system. Input data is encoded by an encoder. A first demultiplexer generates first transmission symbols using the encoded data. The first transmission symbols are modulated, and the modulated first transmission symbols are transmitted. A second demultiplexer generates second transmission symbols using at least a portion of the encoded data. The second transmission symbols are modulated and the modulated second transmission symbols are transmitted.

    摘要翻译: 提供了用于在广播系统中发送数据的方法和装置。 输入数据由编码器编码。 第一解复用器使用编码数据生成第一传输符号。 第一传输符号被调制,并且发送调制的第一传输符号。 第二解复用器使用编码数据的至少一部分来生成第二传输符号。 调制第二传输符号并发送调制的第二传输符号。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING IN COMMUNICATION/BROADCASTING SYSTEM
    5.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING IN COMMUNICATION/BROADCASTING SYSTEM 审中-公开
    在通信/广播系统中发送和接收的方法和装置

    公开(公告)号:US20120198306A1

    公开(公告)日:2012-08-02

    申请号:US13363002

    申请日:2012-01-31

    IPC分类号: H03M13/09 G06F11/10 H03M13/05

    摘要: An apparatus and method are provided for transmitting and receiving in a communication/broadcasting system. The method includes generating a codeword including a first parity bit using a first parity-check matrix, generating an additional parity bit based on a second parity-check matrix, the second parity-check matrix being an extension of the first parity-check matrix, and transmitting the codeword and the additional parity bit.

    摘要翻译: 提供了一种用于在通信/广播系统中发送和接收的装置和方法。 该方法包括使用第一奇偶校验矩阵生成包括第一奇偶校验位的码字,基于第二奇偶校验矩阵产生附加奇偶校验位,第二奇偶校验矩阵是第一奇偶校验矩阵的扩展, 以及发送码字和附加奇偶校验位。

    APPARATUS AND METHOD FOR MAPPING AND DEMAPPING SIGNALS IN A COMMUNICATION SYSTEM USING A LOW DENSITY PARITY CHECK CODE
    8.
    发明申请
    APPARATUS AND METHOD FOR MAPPING AND DEMAPPING SIGNALS IN A COMMUNICATION SYSTEM USING A LOW DENSITY PARITY CHECK CODE 有权
    使用低密度奇偶校验代码在通信系统中映射和解密信号的装置和方法

    公开(公告)号:US20120254683A1

    公开(公告)日:2012-10-04

    申请号:US13435723

    申请日:2012-03-30

    IPC分类号: H03M13/05 G06F11/10

    摘要: An apparatus and method for mapping and demapping signals in a system using a Low Density Parity Check (LDPC) code are provided. In the method, LDPC codeword bits are written column-wise and read row-wise, substreams are generated by demultiplexing the read bits using a demultiplexing scheme, and bits included in each of the substreams are mapped to symbols on a signal constellation. The demultiplexing scheme is determined corresponding to a modulation scheme used in the signal transmitter, a length of the LDPC codeword, and a number of the substreams.

    摘要翻译: 提供了一种使用低密度奇偶校验(LDPC)码在系统中映射和解映射信号的装置和方法。 在该方法中,逐行写入LDPC码字比特并且逐行读出,通过使用解复用方式解复用读取比特来产生子流,并且将每个子流中包括的比特映射到信号星座上的符号。 对应于在信号发射机中使用的调制方案,LDPC码字的长度和子数的数量来确定解复用方案。

    APPARATUS AND METHOD FOR CHANNEL ENCODING IN A COMMUNICATION/BROADCASTING SYSTEM
    10.
    发明申请
    APPARATUS AND METHOD FOR CHANNEL ENCODING IN A COMMUNICATION/BROADCASTING SYSTEM 有权
    通信/广播系统中通道编码的装置和方法

    公开(公告)号:US20110241911A1

    公开(公告)日:2011-10-06

    申请号:US13080032

    申请日:2011-04-05

    IPC分类号: H03M5/00

    CPC分类号: H03M13/3761

    摘要: An encoding apparatus and method in a communication/broadcasting system are provided. When an encoding symbol is generated using at least one source symbol from among total source symbols to be encoded, encoding symbols are generated by using each of the total source symbols with a uniform probability before repeatedly using any of the total source symbols.

    摘要翻译: 提供了一种通信/广播系统中的编码装置和方法。 当从要编码的总的源符号中使用至少一个源符号来生成编码符号时,在重复使用任何总的源符号之前,通过使用具有均匀概率的每个总的源符号来生成编码符号。