公开(公告)号：KR1020080078365A

公开(公告)日：2008-08-27

申请号：KR1020070018382

申请日：2007-02-23

Applicant: 삼성전자주식회사

Inventor： 정재웅 ,  박규복 ,  민기홍

IPC: H04B1/40

CPC classification number: H04B1/40 ,  H03F1/26 ,  H03F2200/294 ,  H03G3/3068 ,  H04B17/318

Abstract: A method and an apparatus for automatically setting a gain state change point of a low noise amplifier in a mobile communication terminal device are provided to set the gain state change point of the low noise amplifier actively according to channel environment, thereby solving the problems when a gain state is fixed. An RSSI(Received Signal Strength Indication) is measured(300). It is determined whether the measured RSSI is included in a weak electric field(302). If the RSSI is included in the weak electric field, a gain state change point is set to a weak electric field state(304). A frame error rate at the measured RSSI is measured(306). It is determined whether the frame rate increases in comparison with an initially set reference value(308). If the frame error rate increases, it is judged that an interference signal increases. Thus, the gain state change point is raised(312). It is determined whether a measurement period is passed(314). If the measurement period is passed, a frame error rate is measured(316). It is determined whether there is the interference signal(318). If there is not the interference signal, the gain state change point is changed to the original point(320).

Abstract translation: 提供了一种用于在移动通信终端设备中自动设置低噪声放大器的增益状态变化点的方法和装置，用于根据信道环境主动地设置低噪声放大器的增益状态变化点，从而解决了当 增益状态是固定的。 测量RSSI（接收信号强度指示）（300）。 确定测量的RSSI是否包括在弱电场（302）中。 如果RSSI被包括在弱电场中，则增益状态改变点被设置为弱电场状态（304）。 测量测量的RSSI的帧错误率（306）。 确定帧速率是否与初始设置的参考值相比增加（308）。 如果帧错误率增加，则判断为干扰信号增加。 因此，提高增益状态变化点（312）。 确定测量周期是否过去（314）。 如果测量周期过去，则测量帧错误率（316）。 确定是否存在干扰信号（318）。 如果没有干扰信号，则增益状态变化点变为原点（320）。