公开(公告)号：US08351550B2

公开(公告)日：2013-01-08

申请号：US12363484

申请日：2009-01-30

Applicant: Hee-Jin Roh ,  Jeoung-Gil Lee ,  Su-Jin Yoon ,  Hoon Kang ,  Chang-Hyun Baik ,  Jun-Kyu Kang ,  Hyung-Jin Choi ,  Se-Bin Im ,  Dae-Hong Lee

Inventor： Hee-Jin Roh ,  Jeoung-Gil Lee ,  Su-Jin Yoon ,  Hoon Kang ,  Chang-Hyun Baik ,  Jun-Kyu Kang ,  Hyung-Jin Choi ,  Se-Bin Im ,  Dae-Hong Lee

IPC: H03D1/00

CPC classification number: H04L27/2688 ,  H04L27/2659 ,  H04L27/2672 ,  H04L27/2675

Abstract: A correlation apparatus and method for frequency synchronization are provided. A frequency synchronization method of a receiver in a broadband wireless access communication system includes acquiring a highest correlation value by conducting a differential correlation of a variable interval between a received signal and a reference signal and performing a frequency synchronization according to the highest correlation value.

Abstract translation: 提供了一种用于频率同步的相关装置和方法。 宽带无线接入通信系统中的接收机的频率同步方法包括通过对接收信号和参考信号进行可变间隔的差分相关，并根据最高相关值进行频率同步来获取最高相关值。

公开(公告)号：US08046398B2

公开(公告)日：2011-10-25

申请号：US11966249

申请日：2007-12-28

Applicant: Jun-Kyu Kang ,  Young-Ik Cho ,  Hun-Kee Kim

Inventor： Jun-Kyu Kang ,  Young-Ik Cho ,  Hun-Kee Kim

IPC: G06F15/00

CPC classification number: H04L27/2607 ,  H04L5/0007 ,  H04L27/263

Abstract: A method for modulating a symbol in a transmitter of an Orthogonal Frequency Division Multiplexing (OFDM) system. The symbol modulation method includes multiplying an input stream of an Inverse Fast Fourier Transform (IFFT) unit by a Twiddling factor for circular-shifting the input stream of the IFFT unit by a Cyclic Prefix (CP) length; performing IFFT on the input stream of the IFFT unit, which is multiplied by the Twiddling factor; buffering data corresponding to the CP length beginning from a front of an output stream of the IFFT unit; and generating an OFDM symbol by forward-copying the buffered data to a back of the output stream of the IFFT unit.

Abstract translation: 一种用于调制正交频分复用（OFDM）系统的发射机中的符号的方法。 符号调制方法包括将快速傅里叶逆变换（IFFT）单位的输入流乘以Twiddling因子，以便将IFFT单元的输入流循环移位循环前缀（CP）长度; 对IFFT单元的输入流执行IFFT，乘以Twiddling因子; 从IFFT单元的输出流的前面开始缓冲对应于CP长度的数据; 以及通过将所缓冲的数据转发到所述IFFT单元的输出流的背面来产生OFDM符号。

公开(公告)号：US06452556B1

公开(公告)日：2002-09-17

申请号：US09956654

申请日：2001-09-20

Applicant: Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

Inventor： Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

IPC: H01Q124

CPC classification number: H01Q21/30 ,  H01Q1/243 ,  H01Q1/244 ,  H01Q1/38 ,  H01Q5/371 ,  H01Q9/30 ,  H01Q21/28

Abstract: Disclosed are a built-in dual band antenna device and an operating method thereof in a mobile terminal. In the built-in antenna dual band antenna device, a built-in dual band antenna has a first conductive antenna pattern formed on a board extended from the upper side of a main PCB and a second conductive antenna pattern on a board extended at a right angle from the upper side of the main PCB. A whip antenna is connected to the built-in dual band antenna, and contained in the mobile terminal when the whip antenna is retracted. A whip antenna driver extends or retracts the whip antenna. A duplexer separates an RF signal received from the built-in dual band antenna from an RF signal to be transmitted to the built-in dual band antenna. A controller processes the RF signals received at and transmitted from the duplexer and controls the whip antenna driver to extend the whip antenna in a speech state or upon a call attempt from a user.

公开(公告)号：US08493954B2

公开(公告)日：2013-07-23

申请号：US12337702

申请日：2008-12-18

Applicant: Jun-Kyu Kang ,  In-Tae Kang ,  Jeong-Gil Lee ,  Bo-Rham Lee ,  Sang-Min Bae

Inventor： Jun-Kyu Kang ,  In-Tae Kang ,  Jeong-Gil Lee ,  Bo-Rham Lee ,  Sang-Min Bae

IPC: H04L27/08 ,  H04B7/208 ,  H04B1/44 ,  H04B7/204 ,  H04B1/04 ,  H04B1/06 ,  H04B7/00 ,  H01Q11/12

CPC classification number: H04L27/2614 ,  H03M1/662 ,  H03M1/70 ,  H04L5/0044 ,  H04L27/2626

Abstract: A method and an apparatus for reducing Digital-to-Analog Conversion (DAC) bits at a transmitter of a Frequency Division Multiple Access (FDMA) system reduces a number of the bits for conversion so as to save power and reduce the cost of operation. The method can include generating a digital signal gain control value and an analog signal gain control value using subcarrier allocation information, a required Signal to Noise Ratio (SNR), and a Peak to Average Power Ratio (PAPR); controlling a gain of a signal input to a digital-to-analog converter using the digital signal gain control value; converting a digital signal of the controlled gain to an analog signal using the digital-to-analog converter; and restoring an original signal by controlling a gain of a signal output from the digital-to-analog converter using the analog signal gain control value.

Abstract translation: 用于减少频分多址（FDMA）系统的发射机处的数模转换（DAC）比特的方法和装置减少了用于转换的比特数，以节省功率并降低操作成本。 该方法可以包括使用子载波分配信息，所需的信噪比（SNR）和峰均功率比（PAPR）来产生数字信号增益控制值和模拟信号增益控制值; 使用数字信号增益控制值控制输入到数模转换器的信号的增益; 使用数模转换器将受控增益的数字信号转换为模拟信号; 以及通过使用模拟信号增益控制值控制从数模转换器输出的信号的增益来恢复原始信号。

公开(公告)号：US20070009056A1

公开(公告)日：2007-01-11

申请号：US11481032

申请日：2006-07-05

Applicant: Hae-Dong Yeon ,  Young-Hak Kim ,  Jae-Hwan Chang ,  Jae-Yong Lee ,  Min-Cheol Park ,  Ji-Yun Seol ,  Tae-Gon Kim ,  Jun-Kyu Kang ,  In-Hyoung Kim ,  Yun-Sang Park ,  Bong-Gee Song

Inventor： Hae-Dong Yeon ,  Young-Hak Kim ,  Jae-Hwan Chang ,  Jae-Yong Lee ,  Min-Cheol Park ,  Ji-Yun Seol ,  Tae-Gon Kim ,  Jun-Kyu Kang ,  In-Hyoung Kim ,  Yun-Sang Park ,  Bong-Gee Song

IPC: H04K1/10

CPC classification number: H04L27/2607 ,  H04L5/023 ,  H04L27/2634

Abstract: A method and apparatus for processing time windowing to transmit a signal in a Broadband Wireless Access (BWA) communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A signal of a first interval included in a previous symbol prior to a current symbol is stored as a signal of a previous symbol interval. The current symbol includes a guard interval and an effective symbol interval subsequent to the guard interval. The current symbol is windowed by overlapping the stored signal of the first interval with a signal of a second interval included in the current symbol subsequent to the previous symbol. A windowed signal is transmitted.

Abstract translation: 一种用于在基于正交频分多址（OFDMA）的宽带无线接入（BWA）通信系统中处理时间窗口以发送信号的方法和装置。 包括在当前符号之前的先前符号中的第一间隔的信号被存储为先前符号间隔的信号。 当前符号包括保护间隔和保护间隔之后的有效符号间隔。 通过将所存储的第一间隔的信号与包含在先前符号之后的当前符号中的第二间隔的信号相叠加来将当前符号加窗。 发送窗口信号。

公开(公告)号：US06885346B2

公开(公告)日：2005-04-26

申请号：US09956691

申请日：2001-09-20

Applicant: Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

Inventor： Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

IPC: H01Q1/24 ,  H01Q9/04 ,  H01Q9/30 ,  H01Q21/28

CPC classification number: H01Q9/0421 ,  H01Q1/244 ,  H01Q9/30 ,  H01Q21/28

Abstract: There is provided a built-in single band antenna device and an operating method thereof in a mobile terminal. In the built-in antenna single band antenna device, a built-in single band antenna is formed into a conductive pattern on a board extended from the upper side of a main PCB. A whip antenna is connected to the built-in single band antenna, and contained in the mobile terminal when the whip antenna is retracted. A whip antenna driver extends or retracts the whip antenna. A duplexer separates an RF signal received from the built-in single band antenna from an RF signal to be transmitted to the built-in single band antenna. A controller processes the RF signals received at and transmitted from the duplexer and controls the whip antenna driver to extend the whip antenna in a speech state or upon a call attempt from a user.

Abstract translation: 在移动终端中提供了内置的单频带天线装置及其操作方法。 在内置天线单频天线装置中，内置单频带天线形成为从主PCB的上侧延伸的板上的导电图案。 鞭状天线连接到内置的单频带天线，并且当鞭状天线缩回时包含在移动终端中。 鞭状天线驱动器延伸或缩回鞭状天线。 双工器将从内置单频带天线接收的RF信号与要发送到内置单频天线的RF信号分离。 控制器处理在双工器处接收和发送的RF信号，并且控制鞭状天线驱动器以语音状态或来自用户的呼叫尝试来延长鞭状天线。

公开(公告)号：US06593899B2

公开(公告)日：2003-07-15

申请号：US09947687

申请日：2001-09-06

Applicant: Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

Inventor： Dong-In Ha ,  Wan-Jin Choi ,  Dong-Hwan Kim ,  Jun-Kyu Kang

IPC: H01Q136

CPC classification number: H01Q1/362 ,  H01Q1/244 ,  H01Q11/08

Abstract: There is provided a helical antenna structure, which exhibits minimal influence from contact with a human body in a mobile terminal. In the helical antenna structure, a cap protrudes from an upper end of the mobile terminal, and a winding coil is formed within the cap, which is spaced from an outer surface of the cap substantially the same distance from a bottom part of the cap to a top part of the cap.

公开(公告)号：US07746940B2

公开(公告)日：2010-06-29

申请号：US11481032

申请日：2006-07-05

Applicant: Hae-Dong Yeon ,  Young-Hak Kim ,  Jae-Hwan Chang ,  Jae-Yong Lee ,  Min-Cheol Park ,  Ji-Yun Seol ,  Tae-Gon Kim ,  Jun-Kyu Kang ,  In-Hyoung Kim ,  Yun-Sang Park ,  Bong-Gee Song

Inventor： Hae-Dong Yeon ,  Young-Hak Kim ,  Jae-Hwan Chang ,  Jae-Yong Lee ,  Min-Cheol Park ,  Ji-Yun Seol ,  Tae-Gon Kim ,  Jun-Kyu Kang ,  In-Hyoung Kim ,  Yun-Sang Park ,  Bong-Gee Song

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2607 ,  H04L5/023 ,  H04L27/2634

Abstract: A method and apparatus for processing time windowing to transmit a signal in a Broadband Wireless Access (BWA) communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A signal of a first interval included in a previous symbol prior to a current symbol is stored as a signal of a previous symbol interval. The current symbol includes a guard interval and an effective symbol interval subsequent to the guard interval. The current symbol is windowed by overlapping the stored signal of the first interval with a signal of a second interval included in the current symbol subsequent to the previous symbol. A windowed signal is transmitted.

Abstract translation: 一种用于在基于正交频分多址（OFDMA）的宽带无线接入（BWA）通信系统中处理时间窗口以发送信号的方法和装置。 包括在当前符号之前的先前符号中的第一间隔的信号被存储为先前符号间隔的信号。 当前符号包括保护间隔和保护间隔之后的有效符号间隔。 通过将所存储的第一间隔的信号与包含在先前符号之后的当前符号中的第二间隔的信号相叠加来将当前符号加窗。 发送窗口信号。

公开(公告)号：US20090154442A1

公开(公告)日：2009-06-18

申请号：US12337702

申请日：2008-12-18

Applicant: Jun-Kyu KANG ,  In-Tae Kang ,  Jeong-Gil Lee ,  Bo-Rham Lee ,  Sang-Min Bae

Inventor： Jun-Kyu KANG ,  In-Tae Kang ,  Jeong-Gil Lee ,  Bo-Rham Lee ,  Sang-Min Bae

IPC: H04B7/208

CPC classification number: H04L27/2614 ,  H03M1/662 ,  H03M1/70 ,  H04L5/0044 ,  H04L27/2626

Abstract: A method and an apparatus for reducing Digital-to-Analog Conversion (DAC) bits at a transmitter of a Frequency Division Multiple Access (FDMA) system reduces a number of the bits for conversion so as to save power and reduce the cost of operation. The method can include generating a digital signal gain control value and an analog signal gain control value using subcarrier allocation information, a required Signal to Noise Ratio (SNR), and a Peak to Average Power Ratio (PAPR); controlling a gain of a signal input to a digital-to-analog converter using the digital signal gain control value; converting a digital signal of the controlled gain to an analog signal using the digital-to-analog converter; and restoring an original signal by controlling a gain of a signal output from the digital-to-analog converter using the analog signal gain control value.

Abstract translation: 用于减少频分多址（FDMA）系统的发射机处的数模转换（DAC）比特的方法和装置减少了用于转换的比特数，以节省功率并降低操作成本。 该方法可以包括使用子载波分配信息，所需的信噪比（SNR）和峰均功率比（PAPR）来产生数字信号增益控制值和模拟信号增益控制值; 使用数字信号增益控制值控制输入到数模转换器的信号的增益; 使用数模转换器将受控增益的数字信号转换为模拟信号; 以及通过使用模拟信号增益控制值控制从数模转换器输出的信号的增益来恢复原始信号。

公开(公告)号：US20090083514A1

公开(公告)日：2009-03-26

申请号：US12234788

申请日：2008-09-22

Applicant: Bo-Rham LEE ,  Jong-Hun Rhee ,  Min-Goo Kim ,  In-Tae Kang ,  Jun-Kyu Kang

Inventor： Bo-Rham LEE ,  Jong-Hun Rhee ,  Min-Goo Kim ,  In-Tae Kang ,  Jun-Kyu Kang

IPC: G06F12/06

CPC classification number: H03M13/2957 ,  H03M13/2707 ,  H03M13/276 ,  H03M13/6505 ,  H03M13/6525 ,  H04L1/0066 ,  H04L1/0071

Abstract: A method and apparatus for block interleaving that eliminates the step of intermediary buffering. The method includes: (a) calculating a memory address at which first output data, of which number is equal to the number of rows of a first encoder is stored, (b) storing the first output data at the calculated memory address of a circular buffer, (c) storing second output data at an address which is incremented by a specific constant value from the calculated memory address of the circular buffer, and (d) storing (n+1)th output data at an address which is incremented by n from the calculated memory address of the circular buffer.

Abstract translation: 一种用于块交织的方法和装置，其消除了中间缓冲的步骤。 该方法包括：（a）计算存储器地址，在该存储器地址处，存储第一个输出数据的数量等于第一个编码器的行数，（b）将第一个输出数据存储在计算的循环存储器地址 缓冲器，（c）将存储第二输出数据存储在从计算的循环缓冲器的存储器地址中增加特定常数值的地址处，以及（d）将第（n + 1）个输出数据存储在增加了 n从循环缓冲区的计算内存地址。