公开(公告)号：US07653859B2

公开(公告)日：2010-01-26

申请号：US11111914

申请日：2005-04-22

Applicant: Eoi-Young Choi ,  Jaehong Kim ,  Jae-hyun Koo ,  Seung-bum Suh

Inventor： Eoi-Young Choi ,  Jaehong Kim ,  Jae-hyun Koo ,  Seung-bum Suh

IPC: H03M13/00

CPC classification number: H03M13/116 ,  H03M13/31 ,  H03M13/6362

Abstract: A system, an apparatus and a method for transmitting/receiving data coded by a low density parity check matrix code are provided. The apparatus for transmitting data coded by a low density parity check code includes: a low density parity check encoder for encoding input data based on the low density parity check code; and a bit puncturer for puncturing columns in an order of columns which least degrade a performance caused by puncturing in the low density check code according to a code rate of an output data. Accordingly, the low density parity check code having superior performance can be implemented to the next generation mobile communication system supporting various code rates.

Abstract translation: 提供了一种用于发送/接收由低密度奇偶校验矩阵码编码的数据的系统，装置和方法。 用于发送由低密度奇偶校验码编码的数据的装置包括：低密度奇偶校验编码器，用于基于低密度奇偶校验码对输入数据进行编码; 以及用于按照输出数据的代码率使得在低密度校验码中进行穿刺所导致的性能最小化的列的列的删截列的位穿孔器。 因此，具有优异性能的低密度奇偶校验码可以实现为支持各种码率的下一代移动通信系统。

公开(公告)号：US20060077887A1

公开(公告)日：2006-04-13

申请号：US11247246

申请日：2005-10-12

Applicant: Jae-ho Roh ,  Jae-hyun Koo

Inventor： Jae-ho Roh ,  Jae-hyun Koo

IPC: H04J11/00

CPC classification number: H04B1/7176 ,  H04L1/0618 ,  H04L27/2602

Abstract: A method is provided for reducing error occurring when a receiving end of a multiband OFDM system estimates original data from the received data. The multiband OFDM system, which transmits data using at last two radio resources, maps the data to at least two mapping data among a plurality of mapping data not to overlap each other and transmits the mapped data at least two times.

Abstract translation: 提供了一种用于减少当多频带OFDM系统的接收端从接收的数据估计原始数据时发生的错误的方法。 使用最后两个无线电资源发送数据的多频带OFDM系统将数据映射到不彼此重叠的多个映射数据中的至少两个映射数据，并将映射数据发送至少两次。

公开(公告)号：US07271678B2

公开(公告)日：2007-09-18

申请号：US11232867

申请日：2005-09-23

Applicant: Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

Inventor： Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

IPC: H03C3/06

CPC classification number: H04B1/7163 ,  H04B1/0082 ,  H04B1/7136

Abstract: A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference frequency generator multiplying the oscillation frequency by a first multiplication rate to generate a reference frequency; a compensation frequency generator multiplying the oscillation frequency by a second multiplication rate to generate a compensation frequency for compensating for the influence of a frequency offset of the oscillation frequency; and a center frequency generator generating the plurality of center frequencies using the reference frequency and the compensation frequency. Therefore, by compensating for the influence of a frequency offset of an oscillation frequency on the generation of center frequencies, it is possible to generate stable center frequencies.

Abstract translation: 提供了一种频率发生装置和方法。 用于生成用于多频段跳频通信的多个中心频率的频率产生装置包括：产生振荡频率的振荡器; 参考频率发生器将振荡频率乘以第一乘法速率以产生参考频率; 补偿频率发生器将振荡频率乘以第二倍频，以产生用于补偿振荡频率的频率偏移的影响的补偿频率; 以及使用所述参考频率和所述补偿频率产生所述多个中心频率的中心频率发生器。 因此，通过补偿振荡频率的频率偏移对中心频率的产生的影响，可以产生稳定的中心频率。

公开(公告)号：US07129867B2

公开(公告)日：2006-10-31

申请号：US11172856

申请日：2005-07-05

Applicant: Wan-jin Kim ,  Jae-hyun Koo

Inventor： Wan-jin Kim ,  Jae-hyun Koo

IPC: H03M1/06

CPC classification number: H04L25/063 ,  H03M1/1295 ,  H04B1/719 ,  H04L27/2647

Abstract: A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.

Abstract translation: 提供了一种多波段跳频通信系统中的接收机的DC偏移校正装置和方法。 通信系统中的接收机的DC偏移校正装置跳到多个频带，包括用于生成并输出对于各个频带彼此不同的多个DC偏移校正信号的控制器; 多个数模转换器（DAC），用于从控制器接收数字到模拟转换和输出多个DC偏移校正信号; 模拟多路复用器（MUX），用于分别输出从所述多个DAC输出的所述多个DC偏移校正信号中的一个; 以及用于将输入信号与模拟MUX的输出信号相加并输出的加法器。 因此，DC偏移校正装置可以由相对较小尺寸和低成本元件的低速DAC和快速模拟MUX来实现。

公开(公告)号：US20060072689A1

公开(公告)日：2006-04-06

申请号：US11236596

申请日：2005-09-28

Applicant: Yun-young Kim ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim ,  Jae-ho Roh ,  Jae-hyun Koo

Inventor： Yun-young Kim ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim ,  Jae-ho Roh ,  Jae-hyun Koo

IPC: H04L27/06

CPC classification number: H03H17/0254 ,  H04B1/7093 ,  H04B1/71637

Abstract: Disclosed is a matched filter and a method for performing cross correlation thereof. The matched filter includes a demultiplexer for demultiplexing an input sample signal into a predetermined number of signals; and cross correlators that perform a cross correlation of each of the demultiplexed sample signals with a predetermined sequence. Therefore, when the matched filter of the present invention is applied to a UWB system having a high sampling rate, the cross correlation operation can be performed at a high rate simply by using low-rate multipliers.

Abstract translation: 公开了一种匹配滤波器及其互相关的方法。 匹配滤波器包括用于将输入采样信号解复用为预定数量的信号的解复用器; 以及交叉相关器，其执行每个解复用的采样信号与预定序列的互相关。 因此，当将本发明的匹配滤波器应用于具有高采样率的UWB系统时，可以简单地通过使用低速率乘法器以高速率执行互相关运算。

公开(公告)号：US20060068720A1

公开(公告)日：2006-03-30

申请号：US11232867

申请日：2005-09-23

Applicant: Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

Inventor： Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

IPC: H04B1/40 ,  H04B1/06

CPC classification number: H04B1/7163 ,  H04B1/0082 ,  H04B1/7136

Abstract: A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference frequency generator multiplying the oscillation frequency by a first multiplication rate to generate a reference frequency; a compensation frequency generator multiplying the oscillation frequency by a second multiplication rate to generate a compensation frequency for compensating for the influence of a frequency offset of the oscillation frequency; and a center frequency generator generating the plurality of center frequencies using the reference frequency and the compensation frequency. Therefore, by compensating for the influence of a frequency offset of an oscillation frequency on the generation of center frequencies, it is possible to generate stable center frequencies.

Abstract translation: 提供了一种频率发生装置和方法。 用于生成用于多频段跳频通信的多个中心频率的频率产生装置包括：产生振荡频率的振荡器; 参考频率发生器将振荡频率乘以第一乘法速率以产生参考频率; 补偿频率发生器将振荡频率乘以第二倍频，以产生用于补偿振荡频率的频率偏移的影响的补偿频率; 以及使用所述参考频率和所述补偿频率产生所述多个中心频率的中心频率发生器。 因此，通过补偿振荡频率的频率偏移对中心频率的产生的影响，可以产生稳定的中心频率。

公开(公告)号：US20060001558A1

公开(公告)日：2006-01-05

申请号：US11172856

申请日：2005-07-05

Applicant: Wan-jin Kim ,  Jae-hyun Koo

Inventor： Wan-jin Kim ,  Jae-hyun Koo

IPC: H03M1/06

CPC classification number: H04L25/063 ,  H03M1/1295 ,  H04B1/719 ,  H04L27/2647

Abstract: A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.

公开(公告)号：US20060140314A1

公开(公告)日：2006-06-29

申请号：US11315120

申请日：2005-12-23

Applicant: Yun-young Kim ,  Jae-hyun Koo ,  Yeon-gon Cho ,  Jae-ho Roh

Inventor： Yun-young Kim ,  Jae-hyun Koo ,  Yeon-gon Cho ,  Jae-ho Roh

IPC: H04L27/06

CPC classification number: H04L27/2656 ,  H04B1/70755 ,  H04B1/7077 ,  H04B1/7093 ,  H04L7/042 ,  H04L27/2675

Abstract: A signal acquisition apparatus and method for reducing a false alarm rate are disclosed. The apparatus includes a comparator for detecting a first peak by comparing a correlation value of a received signal with a first threshold and detecting second peaks in a sample interval of the detected first peak based on a second threshold which is different from the first threshold. Thus, a signal is acquired based on a number of the detected second peaks. Accordingly, the false alarm rate due to the noise can be reduced while the detection probability is maintained even at a high SNR.

公开(公告)号：US20050271154A1

公开(公告)日：2005-12-08

申请号：US11147162

申请日：2005-06-08

Applicant: Jae-ho Roh ,  Jae-hyun Koo ,  Jae-Min Ahn ,  Min-joong Rim ,  Sung-hyun Chung

Inventor： Jae-ho Roh ,  Jae-hyun Koo ,  Jae-Min Ahn ,  Min-joong Rim ,  Sung-hyun Chung

IPC: H04L1/08 ,  H04J11/00 ,  H04K1/10 ,  H04L27/26 ,  H04L27/28 ,  H04W16/00

CPC classification number: H04L1/08 ,  H04K1/04 ,  H04K1/10 ,  H04L5/0046

Abstract: A method for seamlessly receiving a symbol from a transmitting end at a receiving end even when error occurs in a certain radio resource of a multiband OFDM system that transmits a same symbol at least two times. The multiband OFDM system includes a transmitting end selecting two radio resources from at least three radio resources and consecutively transmitting a symbol using the selected radio resources, and a receiving end receiving the symbol from the transmitting end.

Abstract translation: 即使发送至少两次发送相同符号的多频带OFDM系统的某个无线资源发生错误，也可以在接收端从发送端无缝地接收符号的方法。 多频带OFDM系统包括从至少三个无线电资源中选择两个无线电资源并使用所选择的无线电资源连续发送符号的发送端，以及从发送端接收该符号的接收端。

公开(公告)号：US07577218B2

公开(公告)日：2009-08-18

申请号：US11315120

申请日：2005-12-23

Applicant: Yun-young Kim ,  Jae-hyun Koo ,  Yeon-gon Cho ,  Jae-ho Roh

Inventor： Yun-young Kim ,  Jae-hyun Koo ,  Yeon-gon Cho ,  Jae-ho Roh

IPC: H04B1/10

CPC classification number: H04L27/2656 ,  H04B1/70755 ,  H04B1/7077 ,  H04B1/7093 ,  H04L7/042 ,  H04L27/2675

Abstract: A signal acquisition apparatus and method for reducing a false alarm rate are disclosed. The apparatus includes a comparator for detecting a first peak by comparing a correlation value of a received signal with a first threshold and detecting second peaks in a sample interval of the detected first peak based on a second threshold which is different from the first threshold. Thus, a signal is acquired based on a number of the detected second peaks. Accordingly, the false alarm rate due to the noise can be reduced while the detection probability is maintained even at a high SNR.

Abstract translation: 公开了一种用于降低误报率的信号采集装置和方法。 该装置包括比较器，用于通过将接收信号的相关值与第一阈值进行比较来检测第一峰值，并且基于与第一阈值不同的第二阈值检测检测到的第一峰值的采样间隔中的第二峰值。 因此，基于检测到的第二峰值的数量获取信号。 因此，即使在高信噪比下也能够保持由于噪声引起的误报率，同时保持检测概率。