公开(公告)号：US07796577B2

公开(公告)日：2010-09-14

申请号：US11721421

申请日：2005-11-22

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

IPC分类号： H04J1/00 ,  H04J11/00 ,  H04W4/00 ,  H04B1/40 ,  H04B1/034 ,  H03D7/16

CPC分类号： H04L27/265 ,  H04L27/263

摘要： The present invention provides a method for designing operation schedules of a fast Fourier transform (FFT) and a multiple input multiple output orthogonal frequency division multiplexing modem (MIMO-OFDM modem) thereof. According to the present invention, an operation speed of an FFT operator is set up, a receiving symbol is arranged in an OFDM symbol duration in an FFT after receiving the symbol, a transmitting symbol is arranged in an OFDM symbol duration in the FFT schedule before transmitting the symbol, a transmitting/receiving symbol which has the same timing is inserted into an idle symbol duration of the FFT schedule, an FFT schedule which is good to be deleted is deleted, and symbols of the deleted FFT schedule are re-arranged in order to not have an error occur in transmitting/receiving timing.

摘要翻译： 本发明提供一种用于设计快速傅立叶变换（FFT）及其多输入多输出正交频分复用调制解调器（MIMO-OFDM调制解调器）的操作计划的方法。 根据本发明，建立FFT运算符的运算速度，在接收到符号之后，在FFT中以OFDM符号持续时间方式布置接收符号，在FFT调度表中以OFDM符号持续时间内排列发送符号 发送符号时，将具有相同定时的发送/接收符号插入到FFT调度的空闲符号持续时间中，删除良好被删除的FFT调度，并且将删除的FFT调度的符号重新排列在 为了在发送/接收定时中不发生错误。

公开(公告)号：US20080123517A1

公开(公告)日：2008-05-29

申请号：US11720605

申请日：2005-11-10

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

IPC分类号： H04J11/00

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L5/0016 ,  H04L25/03866 ,  H04L27/2602 ,  H04L27/2656 ,  H04L27/2678

摘要： A receiving apparatus of a mobile terminal receiving a signal in a synchronous OFDM system under a multi-cell environment, including a demodulation start controller performing frame synchronization and cell search using a received signal and outputting information on a demodulation start point and a to-be-demodulated neighbor cell; a FFT unit converting a time-domain signal into a frequency-domain signal; a scramble code generator generating scramble codes for the to-be-demodulated neighbor cell from the demodulation start controller and the current cell; a correlator multiplying a signal from the FFT unit and scramble codes from the scramble code generator and outputting correlation signals; demodulators provided corresponding to a current cell and a maximum number of neighbor cells to be demodulated, and demodulating the correlation signals; and a decoder decoding signals from the demodulators and restoring original information transmitted from the corresponding cell.

摘要翻译： 一种在多小区环境下在同步OFDM系统中接收信号的移动终端的接收装置，包括：解调启动控制器，使用接收信号执行帧同步和小区搜索，并输出关于解调起始点和待机信号的信息 调制相邻单元; 将时域信号转换为频域信号的FFT单元; 扰码代码生成器，用于从解调起始控制器和当前小区为待解调的相邻小区生成扰码; 相关器将来自FFT单元的信号和来自加扰码发生器的扰码相乘并输出相关信号; 对应于当前小区提供的解调器和要被解调的最大数量的相邻小区，以及对相关信号进行解调; 以及解码器，对来自解调器的信号进行解码并恢复从相应的单元发送的原始信息。

公开(公告)号：US20090231992A1

公开(公告)日：2009-09-17

申请号：US11721421

申请日：2005-11-22

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

IPC分类号： H04J11/00 ,  H04K1/10

CPC分类号： H04L27/265 ,  H04L27/263

摘要： The present invention provides a method for designing operation schedules of a fast Fourier transform (FFT) and a multiple input multiple output orthogonal frequency division multiplexing modem (MIMO-OFDM modem) thereof. According to the present invention, an operation speed of an FFT operator is set up, a receiving symbol is arranged in an OFDM symbol duration in an FFT after receiving the symbol, a transmitting symbol is arranged in an OFDM symbol duration in the FFT schedule before transmitting the symbol, a transmitting/receiving symbol which has the same timing is inserted into an idle symbol duration of the FFT schedule, an FFT schedule which is good to be deleted is deleted, and symbols of the deleted FFT schedule are re-arranged in order to not have an error occur in transmitting/receiving timing. According to the present invention, the FFT operation and the IFFT operation are processed by one FFT/IFFT operator in the MIMO-OFDM modulation/demodulation apparatus, so that symbols to be modulated/demodulated may be properly scheduled, a minimum number of FFT/IFFT operators may be needed, and a delay of data processing may be minimized.

摘要翻译： 本发明提供一种用于设计快速傅立叶变换（FFT）及其多输入多输出正交频分复用调制解调器（MIMO-OFDM调制解调器）的操作计划的方法。 根据本发明，建立FFT运算符的运算速度，在接收到符号之后，在FFT中以OFDM符号持续时间方式布置接收符号，在FFT调度表中以OFDM符号持续时间内排列发送符号 发送符号时，具有相同定时的发送/接收符号被插入到FFT调度的空闲符号持续时间中，删除良好被删除的FFT调度，并且将删除的FFT调度的符号重新排列在 为了在发送/接收定时中不发生错误。 根据本发明，MIMO-OFDM调制/解调装置中的FFT / IFFT运算符对FFT运算和IFFT运算进行处理，从而可以适当地调整要调制/解调的符号，FFT / 可能需要IFFT运算符，并且数据处理的延迟可以被最小化。

公开(公告)号：US07929621B2

公开(公告)日：2011-04-19

申请号：US11636815

申请日：2006-12-11

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2608 ,  H04L25/03866 ,  H04L27/2647

摘要： A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.

摘要翻译： 终端解调装置预先将存储器中的接收帧信号存储在存储器中，并将其输入到快速傅里叶变换（FFT）单元中，对从相应的存储器读取的必要信息进行解调，并具有单独的数据副载波存储器和导频副载波存储器 并且使用与子载波分配方法混合的信号解调方法，以便容易地解调各种副载波分配方法。

公开(公告)号：US07801088B2

公开(公告)日：2010-09-21

申请号：US11720605

申请日：2005-11-10

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Youn-Ok Park

IPC分类号： H04B7/216 ,  H04L7/00

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L5/0016 ,  H04L25/03866 ,  H04L27/2602 ,  H04L27/2656 ,  H04L27/2678

摘要： A receiving apparatus of a mobile terminal receiving a signal in a synchronous OFDM system under a multi-cell environment, including a demodulation start controller performing frame synchronization and cell search using a received signal and outputting information on a demodulation start point and a to-be-demodulated neighbor cell; a FFT unit converting a time-domain signal into a frequency-domain signal; a scramble code generator generating scramble codes for the to-be-demodulated neighbor cell from the demodulation start controller and the current cell; a correlator multiplying a signal from the FFT unit and scramble codes from the scramble code generator and outputting correlation signals; demodulators provided corresponding to a current cell and a maximum number of neighbor cells to be demodulated, and demodulating the correlation signals; and a decoder decoding signals from the demodulators and restoring original information transmitted from the corresponding cell.

摘要翻译： 一种在多小区环境下在同步OFDM系统中接收信号的移动终端的接收装置，包括：解调启动控制器，使用接收信号执行帧同步和小区搜索，并输出关于解调起始点和待机信号的信息 调制相邻单元; 将时域信号转换为频域信号的FFT单元; 扰码代码生成器，用于从解调起始控制器和当前小区为待解调的相邻小区生成扰码; 相关器将来自FFT单元的信号和来自加扰码发生器的扰码相乘并输出相关信号; 对应于当前小区提供的解调器和要解调的最大数量的相邻小区，以及对相关信号进行解调; 以及解码器，对来自解调器的信号进行解码并恢复从相应的单元发送的原始信息。

公开(公告)号：US20070133703A1

公开(公告)日：2007-06-14

申请号：US11636815

申请日：2006-12-11

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04K1/10

CPC分类号： H04L27/2608 ,  H04L25/03866 ,  H04L27/2647

摘要： A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.

摘要翻译： 终端解调装置预先将存储器中的接收帧信号存储在存储器中，并将其输入到快速傅里叶变换（FFT）单元中，对从相应的存储器读取的必要信息进行解调，并具有单独的数据副载波存储器和导频副载波存储器 并且使用与子载波分配方法混合的信号解调方法，以便容易地解调各种副载波分配方法。

公开(公告)号：US07940858B2

公开(公告)日：2011-05-10

申请号：US11635475

申请日：2006-12-07

申请人： Yong-Su Lee ,  Youn-Ok Park ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

发明人： Yong-Su Lee ,  Youn-Ok Park ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

IPC分类号： H04L27/00 ,  H04B7/06

CPC分类号： H01Q1/246 ,  H01Q3/267 ,  H04B17/14 ,  H04L27/2626

摘要： In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.

摘要翻译： 在通信系统中的校准装置中，调制单元通过调制下行链路信号来计算参考信号，并且数字中频（IF）单元将参考信号转换为中频信号。 上变频器将中频信号转换成射频（RF）信号，下变频器从RF信号中产生每个路径的接收信号，以通过每个路径传输。 校准器通过使用参考信号和每个路径的接收信号来计算每个路径的校正值和延迟值。

公开(公告)号：US20070147537A1

公开(公告)日：2007-06-28

申请号：US11635475

申请日：2006-12-07

申请人： Yong-Su Lee ,  Youn-Ok Bang ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

发明人： Yong-Su Lee ,  Youn-Ok Bang ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

IPC分类号： H04L1/02

CPC分类号： H01Q1/246 ,  H01Q3/267 ,  H04B17/14 ,  H04L27/2626

摘要： In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.

摘要翻译： 在通信系统中的校准装置中，调制单元通过调制下行链路信号来计算参考信号，并且数字中频（IF）单元将参考信号转换为中频信号。 上变频器将中频信号转换成射频（RF）信号，下变频器从RF信号中产生每个路径的接收信号，以通过每个路径传输。 校准器通过使用参考信号和每个路径的接收信号来计算每个路径的校正值和延迟值。