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    • 3. 发明授权
    • Pre-distortion apparatus of power amplifier and method thereof
    • 功率放大器预失真装置及其方法
    • US08018278B2
    • 2011-09-13
    • US12883580
    • 2010-09-16
    • Jae-Ho JungGweon-Do JoYoung-Hoon KimJung-Hoon OhKwang-Chun Lee
    • Jae-Ho JungGweon-Do JoYoung-Hoon KimJung-Hoon OhKwang-Chun Lee
    • H03F1/26
    • H03F1/3247H03F1/0266H03F3/189H03F3/24H03F2201/3233
    • A pre-distortion apparatus of a power amplifier includes: a pre-distortion unit configured to generate a pre-distorted signal of an input signal by calculating a magnitude of the input signal and outputting a complex correction coefficient corresponding to the calculated magnitude of the input signal, and provide the generated pre-distorted signal as an input of the power amplifier; and a complex correct coefficient update unit configured to generate an error signal by comparing an output signal of the power amplifier with the input signal and updating the complex correction coefficient to minimize a magnitude of the generated error signal, wherein the pre-distortion unit provides a constant bias value corresponding to the magnitude of the input signal as a bias of the power amplifier while updating the complex correction coefficient.
    • 功率放大器的预失真装置包括:预失真单元,被配置为通过计算输入信号的幅度来产生输入信号的预失真信号,并输出与所计算的输入的幅度相对应的复数校正系数 信号,并且将生成的预失真信号提供给功率放大器的输入; 以及复数正确系数更新单元,其被配置为通过将所述功率放大器的输出信号与所述输入信号进行比较来生成误差信号,并更新所述复数校正系数以最小化所生成的误差信号的幅度,其中所述预失真单元提供 对应于作为功率放大器的偏置的输入信号的大小的恒定偏置值,同时更新复数校正系数。
    • 5. 发明授权
    • Gain control apparatus and method in receiver of multiband OFDM system
    • 多频OFDM系统接收机增益控制装置及方法
    • US08213891B2
    • 2012-07-03
    • US12507474
    • 2009-07-22
    • Seong-Min KimByung-Su KangGweon-Do JoJae-Ho JungJoon-Hyung KimHeon-Kook KwonSung-Jun LeeKwang-Chun Lee
    • Seong-Min KimByung-Su KangGweon-Do JoJae-Ho JungJoon-Hyung KimHeon-Kook KwonSung-Jun LeeKwang-Chun Lee
    • H04B1/06H04B7/00
    • H04L27/2647H03G3/3068
    • A gain control apparatus in a receiver of multiband OFDM system includes: an amplifier amplifying a received signal based on a first auto gain control signal; an analog-to-digital converter for converting the amplified signal into a digital signal; band reception signal extractor for extracting a signal of a desired reception band from the converted digital signal for each reception band, and controlling gain of the extracted signal according to a second auto gain control signal; a reception power detector for detecting a reception power value of whole band from the converted digital signal; and a multiband integration baseband processor for generating the first auto gain control signal by using the detected reception power value of the whole band, and generating the second auto gain control signal to be provided to the band reception signal extraction units, resource allocation information for each band and a reception power for each reception band.
    • 多频带OFDM系统的接收机中的增益控制装置包括:基于第一自动增益控制信号放大接收信号的放大器; 用于将放大的信号转换成数字信号的模拟 - 数字转换器; 频带接收信号提取器,用于从每个接收频带的转换的数字信号中提取期望的接收频带的信号,并根据第二自动增益控制信号控制所提取的信号的增益; 接收功率检测器,用于从转换的数字信号中检测整个频带的接收功率值; 以及多频带集成基带处理器,用于通过使用检测到的整个频带的接收功率值来产生第一自动增益控制信号,并且生成要提供给频带接收信号提取单元的第二自动增益控制信号,每个 频带和每个接收频带的接收功率。
    • 7. 发明申请
    • GAIN CONTROL APPARATUS AND METHOD IN RECEIVER OF MULTIBAND OFDM SYSTEM
    • 多频OFDM系统接收机的增益控制装置及方法
    • US20100136939A1
    • 2010-06-03
    • US12507474
    • 2009-07-22
    • Seong-Min KimByung-Su KangGweon-Do JoJae-Ho JungJoon-Hyung KimHeon-Kook KwonSung-Jun LeeKwang-Chun Lee
    • Seong-Min KimByung-Su KangGweon-Do JoJae-Ho JungJoon-Hyung KimHeon-Kook KwonSung-Jun LeeKwang-Chun Lee
    • H04B7/00
    • H04L27/2647H03G3/3068
    • A gain control apparatus in a receiver of multiband OFDM system includes: an amplifier amplifying a received signal based on a first auto gain control signal; an analog-to-digital converter for converting the amplified signal into a digital signal; band reception signal extractor for extracting a signal of a desired reception band from the converted digital signal for each reception band, and controlling gain of the extracted signal according to a second auto gain control signal; a reception power detector for detecting a reception power value of whole band from the converted digital signal; and a multiband integration baseband processor for generating the first auto gain control signal by using the detected reception power value of the whole band, and generating the second auto gain control signal to be provided to the band reception signal extraction units, resource allocation information for each band and a reception power for each reception band.
    • 多频带OFDM系统的接收机中的增益控制装置包括:基于第一自动增益控制信号放大接收信号的放大器; 用于将放大的信号转换成数字信号的模拟 - 数字转换器; 频带接收信号提取器,用于从每个接收频带的转换的数字信号中提取期望的接收频带的信号,并根据第二自动增益控制信号控制所提取的信号的增益; 接收功率检测器,用于从转换的数字信号中检测整个频带的接收功率值; 以及多频带集成基带处理器,用于通过使用检测到的整个频带的接收功率值来产生第一自动增益控制信号,并且生成要提供给频带接收信号提取单元的第二自动增益控制信号,每个 频带和每个接收频带的接收功率。
    • 8. 发明授权
    • Apparatus and method for controlling gain of polar transmitter
    • 用于控制极性发射器增益的装置和方法
    • US08433268B2
    • 2013-04-30
    • US13132537
    • 2009-10-29
    • Jae-Ho JungJoon-Hyung KimKwang-Chun Lee
    • Jae-Ho JungJoon-Hyung KimKwang-Chun Lee
    • H04B1/04
    • H03G3/30H03F3/211H03F3/2176H03F3/24H04L27/361
    • Disclosed is an apparatus for transmitting complex signals in a wireless communication system. The present invention, there is provided a method for controlling gain according to a magnitude change of output signals in a polar transmitter including an amplification unit having two or more amplification degrees, the method includes processes to control an output level of a modulated signal when a output-required power of transmission signals are less than a predetermined threshold value, and to perform a basic amplification through the amplification unit; to amplify the amplification unit at a first amplification level when the output-required power of the transmission signals is equal to or greater than a predetermined first threshold value and is less than a predetermined second threshold value; and to amplify the amplification unit at a second amplification level when the output-required power of the transmission signal is equal to or greater than the second threshold value.
    • 公开了一种用于在无线通信系统中发送复杂信号的装置。 本发明提供了一种用于根据包括具有两个或更多个放大度的放大单元的极性发射器中的输出信号的幅度变化来控制增益的方法,所述方法包括当调制信号的输出电平 输出要求的发送信号功率小于预定阈值,并通过放大单元执行基本放大; 当发送信号的输出要求功率等于或大于预定的第一阈值且小于预定的第二阈值时,以第一放大级放大放大单元; 并且当传输信号的输出所需功率等于或大于第二阈值时,以第二放大级放大放大单元。
    • 9. 发明申请
    • WIRELESS TRANSCEIVER SYSTEM FOR SUPPORTING DUAL MODE
    • 用于支持双模的无线收发系统
    • US20100118744A1
    • 2010-05-13
    • US12447104
    • 2007-05-03
    • Heon-Kook KwonJoon-Hyung KimSeong-Min KimYun-Soo KoJae-Ho JungKwang-Chun Lee
    • Heon-Kook KwonJoon-Hyung KimSeong-Min KimYun-Soo KoJae-Ho JungKwang-Chun Lee
    • H04B7/005H04B7/00H04J3/00
    • H04B1/406H04B1/52H04B1/54
    • The present invention relates to a wireless transceiver system for supporting a dual mode, and more particularly to a wireless transceiver system for supporting a dual mode that simultaneously supports the Frequency Division Duplex (FDD) method and the Time Division Duplex (TDD) method in a certain frequency band. The present system supports the FDD system conducting transmission and reception simultaneously by using different frequency bands for transmission and reception as well as the TDD system temporally alternating transmission and reception by using the common frequency band among an upper frequency band and a lower frequency band used in the FDD system as well as another frequency band adjacent thereto, thereby selectively supporting both of the two communication systems in a wireless transceiver system. Therefore, efficient use of various wireless communication standards and the limited frequency resource is provided, and on this basis, an efficient application of all wireless transceiver systems adopting the TDD system and the FDD system as well as the mobile communication base station and the terminal is provided.
    • 本发明涉及一种用于支持双模式的无线收发器系统,更具体地涉及一种用于支持同时支持频分双工(FDD)方法和时分双工(TDD)方法的双模式的无线收发器系统, 某些频段。 本系统支持FDD系统,通过使用不同的频带进行发送和接收,并且通过使用在上述频带中使用的较高频带和较低频带中的公共频带来进行时间上交替的发送和接收,同时进行发送和接收 FDD系统以及与其相邻的另一频带,从而在无线收发器系统中选择性地支持两个通信系统。 因此,提供了各种无线通信标准和有限频率资源的有效利用,并且在此基础上,采用TDD系统和FDD系统以及移动通信基站和终端的所有无线收发机系统的有效应用是 提供。