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    • 4. 发明申请
    • AUTOMATIC GAIN CONTROL APPARATUS AND METHOD IN WIRELESS TELECOMMUNICATION SYSTEM BASED ON TIME DIVISION DUPLEX
    • 基于时分双工的无线电信系统自动增益控制装置及方法
    • US20090046607A1
    • 2009-02-19
    • US12162586
    • 2007-01-25
    • Mun-kyu LeeChang-Bae Yoon
    • Mun-kyu LeeChang-Bae Yoon
    • H04L5/14
    • H03G3/3078
    • Disclosed is an apparatus and a method for controlling automatic gain in a wireless communication system using a Time Division Duplex (TDD) scheme. The apparatus comprises a power detecting unit for detecting a power of a TDD frame signal on a receive path; an Automatic Gain Control (AGC) synchronizing signal generating unit for generating an AGC synchronizing signal enabled or disabled either during a Down Link (DL) frame or during an Up Link (UL) frame of a TDD frame; an automatic gain calculating unit for calculating a gain control value based on the power detected by the power detecting unit either during the DL frame or during the UL frame of the TDD frame in response to the AGC synchronizing signal; and an AGC unit for performing gain control for the TDD frame signal on the receive path on the basis of the calculated gain control value. Hence, as AGC is performed during only an actual receive frame, the optimized demodulation performance can be maintained.
    • 公开了一种使用时分双工(TDD)方案来控制无线通信系统中的自动增益的装置和方法。 该装置包括用于检测接收路径上的TDD帧信号的功率的功率检测单元; 自动增益控制(AGC)同步信号产生单元,用于在下行链路(DL)帧期间或在TDD帧的上行链路(UL)帧期间产生启用或禁用的AGC同步信号; 自动增益计算单元,用于响应于AGC同步信号,在DL帧期间或在TDD帧的UL帧期间,基于由功率检测单元检测到的功率来计算增益控制值; 以及AGC单元,用于基于所计算的增益控制值在接收路径上执行TDD帧信号的增益控制。 因此,由于仅在实际接收帧期间执行AGC,所以可以保持优化的解调性能。