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    Apparatus and method for coding and decoding irregular repeat accumulate codes
    43.
    发明申请
    Apparatus and method for coding and decoding irregular repeat accumulate codes 有权
    用于编码和解码不规则重复累加码的装置和方法

    公开(公告)号：US20050132260A1

    公开(公告)日：2005-06-16

    申请号：US11009231

    申请日：2004-12-10

    申请人： Gyu-Bum Kyung ,  Hong-Sii Jeong ,  Jae-Yoel Kim

    发明人： Gyu-Bum Kyung ,  Hong-Sii Jeong ,  Jae-Yoel Kim

    IPC分类号： H04L1/16 ,  H03M13/11 ,  H03M13/27 ,  H03M13/29 ,  H03M13/00

    CPC分类号： H03M13/2972 ,  H03M13/1148 ,  H03M13/1185 ,  H03M13/1194 ,  H03M13/27

    摘要： An apparatus and method for coding an irregular Repeat Accumulate (RA) code. A repeater repeats a received information word such that the information word corresponds to weights of a first information part and a second information part of a parity check matrix in which permutation matrixes are arranged in the first information part and the second information part corresponding to the information word such that a minimum length of a cycle on a factor graph of the irregular RA code becomes a predetermined length and weights are irregular, and a dual diagonal matrix is arranged in a parity part corresponding to a parity. An interleaver interleaves a signal output from the repeater using an interleaving scheme predefined for the parity check matrix. An accumulator generates the irregular RA code by accumulating a signal output from the interleaver according to a weight of the parity part.

    摘要翻译： 用于对不规则重复累积（RA）代码进行编码的装置和方法。 中继器重复接收到的信息字，使得信息字对应于奇偶校验矩阵的第一信息部分和第二信息部分的权重，其中排列矩阵排列在第一信息部分中，第二信息部分对应于信息 字，使得不规则RA码的因子图上的周期的最小长度变为预定长度，并且权重是不规则的，并且在对应于奇偶校验的奇偶校验部分中布置双对角矩阵。 交织器使用为奇偶校验矩阵预定义的交织方案来交织从中继器输出的信号。 累加器通过根据奇偶校验部分的权重累加从交织器输出的信号来产生不规则RAD码。

    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system
    46.
    发明申请
    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system 有权
    在正交频分复用通信系统中降低峰均功率比的装置和方法

    公开(公告)号：US20050238110A1

    公开(公告)日：2005-10-27

    申请号：US11111217

    申请日：2005-04-21

    申请人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    发明人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    IPC分类号： H04J11/00 ,  H04K1/10 ,  H04L27/26

    CPC分类号： H04L27/2618

    摘要： Provided is a method for reducing a PAPR (Peak-to-Average Power Ratio) of a transmit signal in a broadband wireless communication. The method includes the steps of: assigning information signals to remaining tones except L reserved tones that are previously appointed among N tones, and performing an IFFT operation on the tones; detecting peaks that are greater than a predefined reference value from the IFFT-ed signal; generating signals for removing the detected peaks using P-waveform having impulse characteristic, the P-waveform being produced using the L reserved tones; generating a clipping signal by accumulating the signals; and simultaneously removing the peaks by adding the IFFT-ed signal and the clipping signal.

    摘要翻译： 提供了一种用于降低宽带无线通信中的发送信号的PAPR（峰均功率比）的方法。 该方法包括以下步骤：将信息信号分配给除N个音调之前预先指定的L个保留音之外的剩余音调，并对该音调执行IFFT操作; 检测大于来自IFFT-ed信号的预定参考值的峰值; 产生用于使用具有脉冲特性的P波形去除检测到的峰值的信号，该P波形使用L个保留音产生; 通过累积信号产生限幅信号; 并通过加入IFFT-ed信号和限幅信号同时去除峰。

    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system
    48.
    发明授权
    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system 有权
    在正交频分复用通信系统中降低峰均功率比的装置和方法

    公开(公告)号：US07583738B2

    公开(公告)日：2009-09-01

    申请号：US11111217

    申请日：2005-04-21

    申请人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    发明人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2618

    摘要： Provided is a method for reducing a PAPR (Peak-to-Average Power Ratio) of a transmit signal in a broadband wireless communication. The method includes the steps of: assigning information signals to remaining tones except L reserved tones that are previously appointed among N tones, and performing an IFFT operation on the tones; detecting peaks that are greater than a predefined reference value from the IFFT-ed signal; generating signals for removing the detected peaks using P-waveform having impulse characteristic, the P-waveform being produced using the L reserved tones; generating a clipping signal by accumulating the signals; and simultaneously removing the peaks by adding the IFFT-ed signal and the clipping signal.

    摘要翻译： 提供了一种用于降低宽带无线通信中的发送信号的PAPR（峰均功率比）的方法。 该方法包括以下步骤：将信息信号分配给除N个音调之前预先指定的L个保留音之外的剩余音调，并对该音调执行IFFT操作; 检测大于来自IFFT-ed信号的预定参考值的峰值; 产生用于使用具有脉冲特性的P波形去除检测到的峰值的信号，该P波形使用L个保留音产生; 通过累积信号产生限幅信号; 并通过加入IFFT-ed信号和限幅信号同时去除峰。