公开(公告)号：US20110142146A1

公开(公告)日：2011-06-16

申请号：US12906541

申请日：2010-10-18

Applicant: Hyoung Oh BAE

Inventor： Hyoung Oh BAE

IPC: H04L27/28

CPC classification number: H04L27/2647

Abstract: Provided are a multi-carrier system and a method for receiving a multi-carrier. The multi-carrier system may include a transformation unit to transform an input signal from a time domain to a frequency domain, a signal accumulation unit to accumulate a magnitude of the input signal in a predetermined accumulation interval unit, and to count a number of overflows based on the accumulated magnitude of the input signal, a signal level determination unit to generate bit shift information for adjusting a level of the transformed input signal based on the counted number of overflows, and a signal level adjustment unit to adjust the level of the transformed input signal based on the generated bit shift information.

Abstract translation: 提供了一种多载波系统和用于接收多载波的方法。 多载波系统可以包括将来自时域的输入信号变换为频域的变换单元，以预定的累积间隔单位累积输入信号的幅度的信号累积单元，并计数溢出的数量 基于所述输入信号的累积幅度的信号电平确定单元，生成用于基于所述计数的溢出量来调整所述经变换的输入信号的电平的位移信息的信号电平确定单元，以及用于调整所述变换的 基于生成的位移信息的输入信号。

公开(公告)号：US08023401B2

公开(公告)日：2011-09-20

申请号：US12543842

申请日：2009-08-19

Applicant: Hyoung Oh Bae ,  Dae Ho Kim ,  Yeong Jin Kim

Inventor： Hyoung Oh Bae ,  Dae Ho Kim ,  Yeong Jin Kim

IPC: H04J11/00

CPC classification number: G06F17/142

Abstract: An FFT/IFFT apparatus and method are provided. The FFT/IFFT apparatus includes a storage unit, a first FFT/IFFT unit, a second FFT/IFFT unit, and a third FFT/IFFT unit. The storage unit has as many addresses as the number of bits of input data. The first FFT/IFFT unit sequentially stores half of the input data in the storage unit, performs a first-point FFT/IFFT operation while sequentially receiving the other half of the input data, and stores the first-point FFT/IFFT operation result in the storage unit. The second FFT/IFFT unit performs a second-point FFT/IFFT operation on the first-point FFT/IFFTed data, and stores the second-point FFT/IFFT operation result in the storage unit. The third FFT/IFFT unit performs a third-point FFT/IFFT operation on the second-point FFT/IFFTed data, and stores the third-point FFT/IFFT operation result in the storage unit.

Abstract translation: 提供FFT / IFFT装置和方法。 FFT / IFFT装置包括存储单元，第一FFT / IFFT单元，第二FFT / IFFT单元和第三FFT / IFFT单元。 存储单元具有与输入数据的位数一样多的地址。 第一FFT / IFFT单元顺序地将输入数据的一半存储在存储单元中，在顺序地接收输入数据的另一半的同时执行第一点FFT / IFFT操作，并将第一点FFT / IFFT运算结果存储在 存储单元。 第二FFT / IFFT单元对第一点FFT / IFFT数据执行二点FFT / IFFT运算，并将第二点FFT / IFFT运算结果存储在存储单元中。 第三FFT / IFFT单元对第二点FFT / IFFTed数据执行第三点FFT / IFFT操作，并将第三点FFT / IFFT运算结果存储在存储单元中。

公开(公告)号：US20100149963A1

公开(公告)日：2010-06-17

申请号：US12543842

申请日：2009-08-19

Applicant: Hyoung Oh BAE ,  Dae Ho KIM ,  Yeong Jin KIM

Inventor： Hyoung Oh BAE ,  Dae Ho KIM ,  Yeong Jin KIM

IPC: H04J11/00

CPC classification number: G06F17/142

Abstract: An FFT/IFFT apparatus and method are provided. The FFT/IFFT apparatus includes a storage unit, a first FFT/IFFT unit, a second FFT/IFFT unit, and a third FFT/IFFT unit. The storage unit has as many addresses as the number of bits of input data. The first FFT/IFFT unit sequentially stores half of the input data in the storage unit, performs a first-point FFT/IFFT operation while sequentially receiving the other half of the input data, and stores the first-point FFT/IFFT operation result in the storage unit. The second FFT/IFFT unit performs a second-point FFT/IFFT operation on the first-point FFT/IFFTed data, and stores the second-point FFT/IFFT operation result in the storage unit. The third FFT/IFFT unit performs a third-point FFT/IFFT operation on the second-point FFT/IFFTed data, and stores the third-point FFT/IFFT operation result in the storage unit.

Abstract translation: 提供FFT / IFFT装置和方法。 FFT / IFFT装置包括存储单元，第一FFT / IFFT单元，第二FFT / IFFT单元和第三FFT / IFFT单元。 存储单元具有与输入数据的位数一样多的地址。 第一FFT / IFFT单元顺序地将输入数据的一半存储在存储单元中，在顺序地接收输入数据的另一半的同时执行第一点FFT / IFFT操作，并将第一点FFT / IFFT运算结果存储在 存储单元。 第二FFT / IFFT单元对第一点FFT / IFFT数据执行二点FFT / IFFT运算，并将第二点FFT / IFFT运算结果存储在存储单元中。 第三FFT / IFFT单元对第二点FFT / IFFTed数据执行第三点FFT / IFFT操作，并将第三点FFT / IFFT运算结果存储在存储单元中。