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    Apparatus and method for reducing peak-to-average power ratio in an OFDM communication system
    2.
    发明申请
    Apparatus and method for reducing peak-to-average power ratio in an OFDM communication system 有权
    用于降低OFDM通信系统中的峰均功率比的装置和方法

    公开(公告)号：US20070041459A1

    公开(公告)日：2007-02-22

    申请号：US11501964

    申请日：2006-08-10

    申请人： Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song ,  Dong-Kyu Kim ,  Dong-Joon Shin

    发明人： Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song ,  Dong-Kyu Kim ,  Dong-Joon Shin

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2624

    摘要： A Peak-to-Average Power Ratio (PAPR) reduction apparatus and method in an OFDM communication system are provided. In the PAPR reduction method, magnitude and phase components are extracted from transmission sample data. Peaks having magnitude components exceeding a threshold are detected by comparing the extracted magnitude components with the threshold. The highest of the peaks is detected and compared with the threshold. If the highest peak is greater than the threshold, the highest peak is updated.

    摘要翻译： 提供了一种OFDM通信系统中的峰值平均功率比（PAPR）降低装置和方法。 在PAPR缩小方法中，从传输样本数据中提取幅度和相位分量。 通过将所提取的幅度分量与阈值进行比较来检测具有超过阈值的幅度分量的峰值。 检测最高峰，并将其与阈值进行比较。 如果最高峰值大于阈值，则更新最高峰。

    Apparatus and method for transmitting a signal in a communication system
    3.
    发明申请
    Apparatus and method for transmitting a signal in a communication system 审中-公开
    用于在通信系统中发送信号的装置和方法

    公开(公告)号：US20060215780A1

    公开(公告)日：2006-09-28

    申请号：US11388260

    申请日：2006-03-24

    申请人： Hae-Dong Yeon ,  Sung-Soo Kim ,  Yun-Sang Park ,  Bong-Gee Song ,  Jae-Yong Lee

    发明人： Hae-Dong Yeon ,  Sung-Soo Kim ,  Yun-Sang Park ,  Bong-Gee Song ,  Jae-Yong Lee

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2623 ,  H04L5/023 ,  H04L27/2624

    摘要： In a communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, at least one value mapped to the number of threshold subchannels is compared with the number of subchannels allocated to a signal transmission apparatus in an associated Orthogonal Frequency Division Multiplexing (OFDM) symbol when transmission data including m bits is input. In response to a comparison result, (m−k) bits are generated from the transmission data using at least one of clipping and rounding. The (m−k) bits are converted to an analog signal and the analog signal is transmitted. The number of threshold subchannels is preset to determine whether to use clipping, rounding or both.

    摘要翻译： 在使用正交频分多址（OFDMA）方式的通信系统中，映射到阈值子信道数量的至少一个值与在相关联的正交频分复用（OFDM）中分配给信号发送装置的子信道数量进行比较， 输入包含m位的传输数据时的符号。 响应于比较结果，使用削波和舍入中的至少一个从发送数据生成（m-k）个比特。 （m-k）位转换为模拟信号，并传输模拟信号。 阈值子通道的数量是预设的，以确定是使用裁剪，舍入还是两者。

    Apparatus and method for reducing an error vector magnitude in an orthogonal frequency division multiplexing receiver
    6.
    发明申请
    Apparatus and method for reducing an error vector magnitude in an orthogonal frequency division multiplexing receiver 审中-公开
    用于减小正交频分复用接收机中的误差矢量幅度的装置和方法

    公开(公告)号：US20060159006A1

    公开(公告)日：2006-07-20

    申请号：US11333460

    申请日：2006-01-17

    申请人： Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song

    发明人： Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2607

    摘要： An apparatus and a method for reducing an error vector magnitude in an orthogonal frequency division multiplexing (OFDM) receiver. The method includes the steps of inputting a receiving symbol including a guard interval and an effective symbol interval following the guard interval, in which a front portion of the guard interval and a rear portion of the effective symbol interval have windowing intervals corresponding to windowing of a transmitter, and replacing a signal of the rear windowing interval with a signal of an interval between the front windowing interval and the effective symbol interval, thereby outputting a signal of the effective symbol interval, which substitutes for a signal of the rear windowing interval, to a fast Fourier transform (FFT) section.

    摘要翻译： 一种用于减小正交频分复用（OFDM）接收机中的误差矢量幅度的装置和方法。 该方法包括以下步骤：输入包括保护间隔和保护间隔之后的有效符号间隔的接收符号，其中保护间隔的前部和有效符号间隔的后部具有对应于窗口的开窗间隔 发送器，并且用前窗口间隔和有效符号间隔之间的间隔的信号替换后窗口间隔的信号，从而将代替后窗口间隔的信号的有效符号间隔的信号输出到 快速傅里叶变换（FFT）部分。

    Apparatus and method for canceling interference from neighbor cells in broadband communication system
    9.
    发明申请
    Apparatus and method for canceling interference from neighbor cells in broadband communication system 有权
    宽带通信系统中消除相邻小区干扰的装置和方法

    公开(公告)号：US20070147538A1

    公开(公告)日：2007-06-28

    申请号：US11643340

    申请日：2006-12-20

    申请人： Yun-Ho Jung ,  Yun-Sang Park ,  Bong-Gee Song ,  Young-Hak Kim ,  Byung-Tae Kang ,  Min-Cheol Park ,  In-Hyoung Kim ,  Hae-Dong Yeon

    发明人： Yun-Ho Jung ,  Yun-Sang Park ,  Bong-Gee Song ,  Young-Hak Kim ,  Byung-Tae Kang ,  Min-Cheol Park ,  In-Hyoung Kim ,  Hae-Dong Yeon

    IPC分类号： H04L1/02

    CPC分类号： H04B7/0845 ,  H04L1/0631 ,  H04L1/0656

    摘要： An apparatus and method for canceling an interference signal in a broadband wireless communication system are provided. A receiver of a wireless communication system includes at least two receive antennas for receiving a target signal of a serving base station and interference signals of at least one neighbor base station; a channel estimator for estimating channels of the signals received through the receive antennas; and a detector for detecting the target signal using channel estimation values of the received signals. Accordingly, it is possible to reduce error propagation caused by the incorrect estimation and detection of the interference signal. In addition, time delay for detecting/restoring/removing the interference signal does not occur. Moreover, the increase of additional buffers can be prevented. Consequently, the increase of hardware complexity can be prevented.

    摘要翻译： 提供一种用于在宽带无线通信系统中消除干扰信号的装置和方法。 无线通信系统的接收机包括用于接收服务基站的目标信号和至少一个相邻基站的干扰信号的至少两个接收天线; 用于估计通过接收天线接收的信号的信道的信道估计器; 以及检测器，用于使用所接收信号的信道估计值来检测目标信号。 因此，可以减少由误差估计和干扰信号的检测引起的误差传播。 此外，不发生用于检测/恢复/去除干扰信号的时间延迟。 此外，可以防止额外的缓冲器的增加。 因此，可以防止硬件复杂性的增加。

    Apparatus and method for canceling interference from neighbor cells in broadband communication system
    10.
    发明授权
    Apparatus and method for canceling interference from neighbor cells in broadband communication system 有权
    宽带通信系统中消除相邻小区干扰的装置和方法

    公开(公告)号：US07778309B2

    公开(公告)日：2010-08-17

    申请号：US11643340

    申请日：2006-12-20

    申请人： Yun-Ho Jung ,  Yun-Sang Park ,  Bong-Gee Song ,  Young-Hak Kim ,  Byung-Tae Kang ,  Min-Cheol Park ,  In-Hyoung Kim ,  Hae-Dong Yeon

    发明人： Yun-Ho Jung ,  Yun-Sang Park ,  Bong-Gee Song ,  Young-Hak Kim ,  Byung-Tae Kang ,  Min-Cheol Park ,  In-Hyoung Kim ,  Hae-Dong Yeon

    IPC分类号： H04L27/30

    CPC分类号： H04B7/0845 ,  H04L1/0631 ,  H04L1/0656

    摘要： An apparatus and method for canceling an interference signal in a broadband wireless communication system are provided. A receiver of a wireless communication system includes at least two receive antennas for receiving a target signal of a serving base station and interference signals of at least one neighbor base station; a channel estimator for estimating channels of the signals received through the receive antennas; and a detector for detecting the target signal using channel estimation values of the received signals. Accordingly, it is possible to reduce error propagation caused by the incorrect estimation and detection of the interference signal. In addition, time delay for detecting/restoring/removing the interference signal does not occur. Moreover, the increase of additional buffers can be prevented. Consequently, the increase of hardware complexity can be prevented.

    摘要翻译： 提供一种用于在宽带无线通信系统中消除干扰信号的装置和方法。 无线通信系统的接收机包括用于接收服务基站的目标信号和至少一个相邻基站的干扰信号的至少两个接收天线; 用于估计通过接收天线接收的信号的信道的信道估计器; 以及检测器，用于使用所接收信号的信道估计值来检测目标信号。 因此，可以减少由误差估计和干扰信号的检测引起的误差传播。 此外，不发生用于检测/恢复/去除干扰信号的时间延迟。 此外，可以防止额外的缓冲器的增加。 因此，可以防止硬件复杂性的增加。