公开(公告)号：US20080039013A1

公开(公告)日：2008-02-14

申请号：US11891648

申请日：2007-08-10

Applicant: Young-Bin Chang ,  Sung-Eun Park ,  Chang-Yoon Oh ,  Jae-Weon Cho ,  Hyoung-Kyu Lim ,  Eun-Taek Lim ,  Sung-Jin Lee ,  Hyun-Jeong Kang ,  Dong-Seek Park ,  Pah-Yuh Joo ,  Mi-Hyun Lee ,  Soon-Mi Cho ,  Chi-Woo Lim ,  Jung-Je Son

Inventor： Young-Bin Chang ,  Sung-Eun Park ,  Chang-Yoon Oh ,  Jae-Weon Cho ,  Hyoung-Kyu Lim ,  Eun-Taek Lim ,  Sung-Jin Lee ,  Hyun-Jeong Kang ,  Dong-Seek Park ,  Pah-Yuh Joo ,  Mi-Hyun Lee ,  Soon-Mi Cho ,  Chi-Woo Lim ,  Jung-Je Son

IPC: H04B7/15

CPC classification number: H04B7/155

Abstract: An apparatus and method for generating an RS SCH in a wireless communication system are provided, in which a base station checks a BS SCH sequence and a mask sequence, and generates an RS SCH sequence by XOR-operating the BS SCH sequence and the mask sequence.

Abstract translation: 提供一种用于在无线通信系统中生成RS SCH的装置和方法，其中基站检查BS SCH序列和掩码序列，并且通过XOR操作BS SCH序列和掩码序列来生成RS SCH序列 。

公开(公告)号：US20080037676A1

公开(公告)日：2008-02-14

申请号：US11725977

申请日：2007-03-20

Applicant: Gyu-Bum Kyung ,  Jae-Yoel Kim ,  Dong-Seek Park ,  Sung-Eun Park ,  Chi-Woo Lim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

Inventor： Gyu-Bum Kyung ,  Jae-Yoel Kim ,  Dong-Seek Park ,  Sung-Eun Park ,  Chi-Woo Lim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

IPC: H04L27/34

CPC classification number: H04L27/0008 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0033 ,  H04L1/0036

Abstract: Disclosed is an apparatus and method for transmitting/receiving a signal in a communication system, in which an MCS level or a modulation scheme to be used to an information vector to be transmitted is determined when the information vector is generated, and a codeword vector is generated by encoding the information vector in an encoding scheme corresponding to the determined MCS level or modulation scheme. Thus, a signal can be transmitted in such a manner as to have optimal performance for each MCS level or modulation scheme.

Abstract translation: 公开了一种用于在通信系统中发送/接收信号的装置和方法，其中当生成信息向量时，确定要用于要发送的信息向量的MCS级别或调制方案，并且码字向量是 通过对与所确定的MCS等级或调制方案相对应的编码方案对信息向量进行编码而生成。 因此，可以以对于每个MCS级别或调制方案具有最佳性能的方式来发送信号。

公开(公告)号：US20070283219A1

公开(公告)日：2007-12-06

申请号：US11800035

申请日：2007-05-03

Applicant: Sung-Eun Park ,  Chi-Woo Lim ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Seung-Hoon Choi ,  Gyu-Bum Kyung ,  Hong-Sil Jeong ,  Thierry Lestable

Inventor： Sung-Eun Park ,  Chi-Woo Lim ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Seung-Hoon Choi ,  Gyu-Bum Kyung ,  Hong-Sil Jeong ,  Thierry Lestable

IPC: H03M13/00

CPC classification number: H04L1/0043 ,  H03M13/116 ,  H03M13/1171 ,  H03M13/1188 ,  H03M13/6527 ,  H03M13/6544 ,  H04L1/0057

Abstract: An apparatus and method for encoding/decoding a non-binary low density parity check (LDPC) code in a communication system. The apparatus and method includes receiving an information vector; generating a non-binary LDPC code by encoding the information vector into a non-binary LDPC code according to a non-binary LDPC encoding scheme.

Abstract translation: 一种用于在通信系统中对非二进制低密度奇偶校验（LDPC）码进行编码/解码的装置和方法。 该装置和方法包括：接收信息向量; 通过根据非二进制LDPC编码方案将信息矢量编码为非二进制LDPC码来生成非二进制LDPC码。

公开(公告)号：US20070226587A1

公开(公告)日：2007-09-27

申请号：US11709945

申请日：2007-02-22

Applicant: Sung-Eun Park ,  Chi-Woo Lim ,  Thierry Lestable ,  Dong-Seek Park ,  Jae-Yoel Kim

Inventor： Sung-Eun Park ,  Chi-Woo Lim ,  Thierry Lestable ,  Dong-Seek Park ,  Jae-Yoel Kim

IPC: H03M13/00

CPC classification number: H03M13/114

Abstract: Provided are an apparatus and a method for receiving a signal in a communication system, which receives the signal, and decodes the received signal in a Low Density Parity Check (LDPC) decoding scheme in which the sequence of check node operations is scheduled, thereby improving the decoding performance of the LDPC code.

Abstract translation: 提供了一种用于在通信系统中接收信号的装置和方法，该通信系统接收该信号，并且在其中调度校验节点操作的顺序的低密度奇偶校验（LDPC）解码方案中对接收的信号进行解码，从而改善 LDPC码的解码性能。

公开(公告)号：US20070118786A1

公开(公告)日：2007-05-24

申请号：US11603377

申请日：2006-11-21

Applicant: Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

Inventor： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

IPC: H03M13/00 ,  H04L1/18

CPC classification number: H03M13/1105 ,  H03M13/29 ,  H03M13/2948 ,  H03M13/3723 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/08 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1829

Abstract: A method and apparatus is provided for receiving data in a receiver of a communication system. In the receiver, a first calculator calculates a Log Likelihood Ratio (LLR) value of data transmitted from a transmitter, a decoder performs iterative decoding on the transmitted data using the LLR value calculated by the first calculator. A second calculator determines whether there is an error in the decoded data by calculating an error of the data decoded by the decoder. A storage stores an LLR value of the decoded data according to the determination result of the second calculator. An adder adds up the LLR value calculated by the first calculator and the LLR value stored in the storage. A controller performs a control operation such that if the data transmitted from the transmitter is retransmitted data, the decoder performs iterative decoding using the LLR value added by the adder, and if the data transmitted from the transmitter is not retransmitted data, the decoder performs iterative decoding using the LLR value calculated by the first calculator.

Abstract translation: 提供了一种用于在通信系统的接收机中接收数据的方法和装置。 在接收机中，第一计算器计算从发送器发送的数据的对数似然比（LLR）值，解码器使用由第一计算器计算出的LLR值对所发送的数据执行迭代解码。 第二计算器通过计算由解码器解码的数据的误差来确定解码数据中是否存在错误。 存储器根据第二计算器的确定结果存储解码数据的LLR值。 加法器将由第一计算器计算的LLR值和存储在存储器中的LLR值相加。 控制器执行控制操作，使得如果从发送器发送的数据是重发数据，则解码器使用由加法器添加的LLR值来执行迭代解码，并且如果从发送器发送的数据不是重传数据，则解码器执行迭代 使用由第一计算器计算的LLR值进行解码。

公开(公告)号：US20070101246A1

公开(公告)日：2007-05-03

申请号：US11583472

申请日：2006-10-19

Applicant: Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Chi-Woo Lim

Inventor： Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Chi-Woo Lim

IPC: G06F11/00 ,  H03M13/00

CPC classification number: H03M13/116 ,  H03M13/635

Abstract: Disclosed is a device and method for coding a block low density parity check (LDPC) code having a variable length. The a device and method include receiving an information word; and coding the information word into a block LDPC code according to a first parity check matrix or a second parity check matrix depending on a length to be applied when generating the information word into the block LDPC code.

Abstract translation: 公开了一种用于对具有可变长度的块低密度奇偶校验（LDPC）码进行编码的装置和方法。 该装置和方法包括接收信息字; 根据第一奇偶校验矩阵或第二奇偶校验矩阵，将该信息字编码为块LDPC码，这取决于在将信息字生成到块LDPC码时要施加的长度。

公开(公告)号：US20070089027A1

公开(公告)日：2007-04-19

申请号：US11528044

申请日：2006-09-27

Applicant: Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi ,  Dong-Seek Park

Inventor： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi ,  Dong-Seek Park

IPC: H03M13/00

CPC classification number: H03M13/1162 ,  H03M13/618 ,  H03M13/6306

Abstract: An apparatus is provided for transmitting a signal in a communication system using a Low Density Parity Check (LDPC) code. A controller determines a number of ‘0’s to be inserted in information data according to a first coding rate to be applied when generating the information data into an LDPC code, and determines the number of ‘0’s to be removed from the LDPC code. A ‘0’ inserter inserts ‘0s’ in the information data according to control of the controller. An LDPC encoder generates the LDPC code by encoding the ‘0’-inserted signal according to a first parity check matrix. A ‘0’ remover removes the inserted ‘0’s from the LDPC code.

Abstract translation: 提供了一种用于在使用低密度奇偶校验（LDPC）码的通信系统中发送信号的装置。 控制器根据在将信息数据生成为LDPC码时应用的第一编码率来确定要插入到信息数据中的“0”数，并且确定要从LDPC码中移除的“0”的数目。 “0”插入器根据控制器的控制在信息数据中插入“0”。 LDPC编码器通过根据第一奇偶校验矩阵对“0”插入的信号进行编码来生成LDPC码。 “0”去除器从LDPC码中移除插入的0。

公开(公告)号：US20060094366A1

公开(公告)日：2006-05-04

申请号：US11266969

申请日：2005-11-04

Applicant: Jae-Weon Cho ,  Jung-Je Son ,  Chang-Hoi Koo ,  Pan-Yuh Joo ,  Yeong-Moon Son ,  Young-Bin Chang ,  Chi-Woo Lim ,  Hyun-Jeong Kang ,  Sung-Jin Lee ,  Hyoung-Kyu Lim

Inventor： Jae-Weon Cho ,  Jung-Je Son ,  Chang-Hoi Koo ,  Pan-Yuh Joo ,  Yeong-Moon Son ,  Young-Bin Chang ,  Chi-Woo Lim ,  Hyun-Jeong Kang ,  Sung-Jin Lee ,  Hyoung-Kyu Lim

IPC: H04B17/00

CPC classification number: H04W72/1278 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0245 ,  H04W74/00 ,  Y02D70/142 ,  Y02D70/146

Abstract: An apparatus and method for transmitting and receiving a signal according to a change of downlink channel information by a mobile station in a broadband wireless access communication system. The method includes: detecting the change of the downlink channel information; receiving a report from a base station that there is data for the mobile station; and reporting the change of the downlink channel information to the base station, so that the base station and the mobile station have same downlink channel information.

Abstract translation: 一种用于在宽带无线接入通信系统中根据移动台根据下行链路信道信息的变化发送和接收信号的装置和方法。 该方法包括：检测下行链路信道信息的变化; 从基站接收到有移动台数据的报告; 并向基站报告下行链路信道信息的变化，使得基站和移动站具有相同的下行链路信道信息。

公开(公告)号：US20060087961A1

公开(公告)日：2006-04-27

申请号：US11254681

申请日：2005-10-20

Applicant: Young-Bin Chang ,  Chi-Woo Lim ,  Pan-Yuh Joo ,  Jae-Weon Cho

Inventor： Young-Bin Chang ,  Chi-Woo Lim ,  Pan-Yuh Joo ,  Jae-Weon Cho

IPC: H04J11/00

CPC classification number: H04L27/2607

Abstract: An apparatus and method for canceling ISI in a broadband wireless communication system are provided. In a transmitter of the broadband wireless communication system, a controller acquires a CP length, a puncturing pattern, and a time sample interval according to a delay spread. A puncturer punctures coded data in the puncturing pattern. An IFFT processor IFFT-processes the punctured coded data and outputs sample data. A CP inserter generates an OFDM symbol by inserting a copy of a last part of the sample data before the sample data. Here, the length of the last part of the sample data is equal to the CP length. A D/A converter converts the OFDM symbol to an analog signal at a sampling rate determined by the time sample interval.

公开(公告)号：US20060007850A1

公开(公告)日：2006-01-12

申请号：US11073455

申请日：2005-03-07

Applicant: Sung-Eun Park ,  Seung-Hoon Choi ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Ryul Yun ,  Sie-Joon Cho ,  Jae-Weon Cho ,  Chi-Woo Lim

Inventor： Sung-Eun Park ,  Seung-Hoon Choi ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Ryul Yun ,  Sie-Joon Cho ,  Jae-Weon Cho ,  Chi-Woo Lim

IPC: H04J11/00

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2618 ,  H04L27/262

Abstract: Disclosed is a method for transmitting a pilot symbol from base stations (BSs) to a subscriber station (SS) in a communication system which includes the base stations located adjacent to each other, the method includes the steps of transmitting BS-identifying sub-carriers which represent sequences for identifying the base stations in a frequency domain of the pilot symbol; and transmitting PAPR (Peak to Average Power Ratio) sub-carriers which represent sequences for reducing a PAPR of the pilot symbol together with the transmission of the BS-identifying sub-carriers in the frequency domain.