公开(公告)号：US20100329394A1

公开(公告)日：2010-12-30

申请号：US12918246

申请日：2009-02-19

申请人： Jung-Hwa Bae ,  Sang-Min Bae

发明人： Jung-Hwa Bae ,  Sang-Min Bae

IPC分类号： H04L27/06

CPC分类号： H04L27/2647 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/3863

摘要： Provided are an apparatus and a method for estimating I/Q unbalance parameters in an OFDM receiver. The apparatus includes an unbalance parameter estimator and an I/Q unbalance compensator. The unbalance parameter estimator estimates an amplitude difference and a phase difference depending on positions of pilot tones in a preamble of a received signal. The I/Q unbalance compensator compensates for an I/Q unbalance using the amplitude difference and the phase difference estimated by the unbalance parameter estimator.

摘要翻译： 提供了一种用于估计OFDM接收机中的I / Q不平衡参数的装置和方法。 该装置包括不平衡参数估计器和I / Q不平衡补偿器。 不平衡参数估计器根据接收信号的前导码中的导频音调的位置来估计幅度差和相位差。 I / Q不平衡补偿器使用由不平衡参数估计器估计的幅度差和相位差来补偿I / Q不平衡。

公开(公告)号：US08548092B2

公开(公告)日：2013-10-01

申请号：US13004271

申请日：2011-01-11

申请人： In-Tae Kang ,  Jung-Hwa Bae ,  Jung-Uk Woo ,  Shin-Ho Kim ,  Sang-Min Bae ,  Jong-Han Lim ,  Dong-Min Kim ,  Bo-Rham Lee

发明人： In-Tae Kang ,  Jung-Hwa Bae ,  Jung-Uk Woo ,  Shin-Ho Kim ,  Sang-Min Bae ,  Jong-Han Lim ,  Dong-Min Kim ,  Bo-Rham Lee

IPC分类号： H04K1/02

CPC分类号： H04L27/2624

摘要： A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.

摘要翻译： 提供了一种使用峰值窗口降低峰均功率比（PAPR）的方法和装置。 在设备中，绝对值计算器计算输入信号的绝对值，减法器根据绝对值减去预定的限幅阈值电平，平滑单元根据预定的平滑方案对减法信号进行平滑处理，并输出第一个平滑 信号，加法器将第一平滑信号与削波阈值电平相加，逆计算器通过将削波阈值电平乘以相加信号的倒数来输出第二平滑信号，乘法器将最终的PAPR降低信号乘以 输入信号由第二平滑信号。 该方法和装置在不延迟地处理具有大带宽和高数据速率的信号的同时解决过度补偿问题，从而最小化对误码率（BER）和相邻信道泄漏比（ACLR）性能的削波影响。

公开(公告)号：US20110182339A1

公开(公告)日：2011-07-28

申请号：US13004271

申请日：2011-01-11

申请人： In-Tae KANG ,  Jung-Hwa BAE ,  Jung-Uk WOO ,  Shin-Ho KIM ,  Sang-Min BAE ,  Jong-Han LIM ,  Dong-Min KIM ,  Bo-Rham LEE

发明人： In-Tae KANG ,  Jung-Hwa BAE ,  Jung-Uk WOO ,  Shin-Ho KIM ,  Sang-Min BAE ,  Jong-Han LIM ,  Dong-Min KIM ,  Bo-Rham LEE

IPC分类号： H04B17/00

CPC分类号： H04L27/2624

摘要： A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.

摘要翻译： 提供了一种使用峰值窗口降低峰均功率比（PAPR）的方法和装置。 在设备中，绝对值计算器计算输入信号的绝对值，减法器根据绝对值减去预定的限幅阈值电平，平滑单元根据预定的平滑方案对减法信号进行平滑处理，并输出第一个平滑 信号，加法器将第一平滑信号与削波阈值电平相加，逆计算器通过将削波阈值电平乘以相加信号的倒数来输出第二平滑信号，乘法器将最终的PAPR降低信号乘以 输入信号由第二平滑信号。 该方法和装置在不延迟地处理具有大带宽和高数据速率的信号的同时解决过度补偿问题，从而最小化对误码率（BER）和相邻信道泄漏比（ACLR）性能的削波影响。

公开(公告)号：US20100322065A1

公开(公告)日：2010-12-23

申请号：US12795991

申请日：2010-06-08

申请人： In-Tae KANG ,  Jung-Hwa BAE ,  Bo-Rham LEE ,  Sang-Min BAE ,  Jong-Han LIM

发明人： In-Tae KANG ,  Jung-Hwa BAE ,  Bo-Rham LEE ,  Sang-Min BAE ,  Jong-Han LIM

IPC分类号： H04J1/00

CPC分类号： H04L5/003 ,  H04L5/0007 ,  H04L27/2618

摘要： A method and apparatus for transmitting a signal in a Single Carrier-Frequency Division Multiplexing Access (SC-FDMA) communication system are provided. The method includes determining if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, expanding an input signal to be transmitted Q times in a time domain when the Q is an integer, generating an SC-FDMA signal, and transmitting the SC-FDMA signal.

摘要翻译： 提供一种用于在单载波频分复用接入（SC-FDMA）通信系统中发送信号的方法和装置。 该方法包括：确定带宽扩展因子（BEF）Q是否为整数，根据系统频带的子载波的数目N和所分配频带的子载波数M来确定BEF为N / M，扩展输入 当Q为整数时，在时域中发送Q次的信号，产生SC-FDMA信号，并发送SC-FDMA信号。

公开(公告)号：US08509079B2

公开(公告)日：2013-08-13

申请号：US12795991

申请日：2010-06-08

申请人： In-Tae Kang ,  Jung-Hwa Bae ,  Bo-Rham Lee ,  Sang-Min Bae ,  Jong-Han Lim

发明人： In-Tae Kang ,  Jung-Hwa Bae ,  Bo-Rham Lee ,  Sang-Min Bae ,  Jong-Han Lim

IPC分类号： H04J3/14

CPC分类号： H04L5/003 ,  H04L5/0007 ,  H04L27/2618

摘要： A method and apparatus for transmitting a signal whereby it is determined if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, an input signal to be transmitted Q times in a time domain when the Q is an integer is expanded, a Single Carrier Frequency Division Multiplexing Access (SC-FDMA) signal is generated, and the SC-FDMA signal is transmitted.

摘要翻译： 一种用于发送信号的方法和装置，由此确定带宽扩展因子（BEF）Q是否是整数，BEF根据系统频带的子载波数N和子载波数M确定为N / M 的分配频带，当Q为整数时在时域中发送Q次的输入信号被扩展，产生单载波频分复用接入（SC-FDMA）信号，并且发送SC-FDMA信号 。

公开(公告)号：US08467479B2

公开(公告)日：2013-06-18

申请号：US12918246

申请日：2009-02-19

申请人： Jung-Hwa Bae ,  Sang-Min Bae

发明人： Jung-Hwa Bae ,  Sang-Min Bae

IPC分类号： H03D3/00

CPC分类号： H04L27/2647 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/3863

摘要： Provided are an apparatus and a method for estimating I/Q unbalance parameters in an OFDM receiver. The apparatus includes an unbalance parameter estimator and an I/Q unbalance compensator. The unbalance parameter estimator estimates an amplitude difference and a phase difference depending on positions of pilot tones in a preamble of a received signal. The I/Q unbalance compensator compensates for an I/Q unbalance using the amplitude difference and the phase difference estimated by the unbalance parameter estimator.

摘要翻译： 提供了一种用于估计OFDM接收机中的I / Q不平衡参数的装置和方法。 该装置包括不平衡参数估计器和I / Q不平衡补偿器。 不平衡参数估计器根据接收信号的前导码中的导频音调的位置来估计幅度差和相位差。 I / Q不平衡补偿器使用由不平衡参数估计器估计的幅度差和相位差来补偿I / Q不平衡。

公开(公告)号：US07334424B2

公开(公告)日：2008-02-26

申请号：US11254606

申请日：2005-10-19

申请人： Jun Hyung Park ,  Jung Hwa Bae ,  Kwang Oh Moon ,  Hyoung Bok Jung

发明人： Jun Hyung Park ,  Jung Hwa Bae ,  Kwang Oh Moon ,  Hyoung Bok Jung

IPC分类号： F25D17/06 ,  B01L1/04

CPC分类号： F24F1/0007 ,  F24F3/16 ,  F24F2001/004

摘要： Disclosed herein is an air conditioner having independent cooling and purifying paths. The air conditioner comprises a body casing formed by assembling a front panel with a rear panel, the front panel having a cooled air discharge opening and one or more suction openings to introduce indoor air into the body casing, a first fan arranged in the body casing to suction air via the suction openings, and a heat exchanger located above the first fan to perform heat exchange of the suctioned air. A cooler housing is arranged in the body casing to receive the first fan therein. Also, an air purifier is mounted in the body casing.

摘要翻译： 这里公开了具有独立冷却和净化路径的空调。 所述空调机包括通过组装前面板与后面板而形成的主体壳体，所述前面板具有冷却空气排出口和一个或多个抽吸开口，以将室内空气引入到主体壳体中;第一风扇，设置在主体外壳 通过吸入口抽吸空气，以及位于第一风扇上方的热交换器，以进行吸入空气的热交换。 一个较冷的外壳设置在主体外壳中，以便在其中容纳第一个风扇。 此外，空气净化器安装在主体外壳中。