Method and device for adjusting gain

Abstract

The embodiment of the invention provides a method and a device for adjusting gain, relating to the communication field. The method comprises the steps of transforming a received wireless high-frequency signal into a digital signal, filtering the digital signal to obtain a filtered digital signal, according to the digital signal before filtering and the digital signal after filtering, detecting whether the wireless high-frequency signal exists a block, and according to the detection result, determining a gear mode; under the determined gear mode, adjusting the gain at the radio frequency front end of a user device UE. The device comprises a conversion filter module, a block detection module, a determining module and an adjusting module. By using the method and device for adjusting gain of the invention, the throughput rate can be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and equipment for adjusting gain. Background technique [0002] In a WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) wireless communication system, due to the dynamic attenuation of the wireless channel, the dynamic range of the power of the radio frequency front end of the UE (User Equipment, user equipment) to receive the wireless high frequency signal is relatively small. Therefore, the UE introduces the function of automatically adjusting the gain in its RF front end to obtain a smooth signal with a small dynamic range. [0003] Among them, the dynamic range of the power of the radio frequency front-end receiving the wireless high-frequency signal is -20dBm to -110dBm, and the dynamic range is divided in advance to divide the dynamic range into several radio frequency gain intervals, and each radio frequency gain interval corresponds t...

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Problems solved by technology

[0006] If the coarse division mode is used, since the coverage of the radio frequency gain range corresponding to each radio frequency state in the coarse division mode is larger than the coverage range of the radio frequency gain range corresponding to each radio frequency state in the subdivision mode, when the power of the wireless high frequency signal is within In the boundary overlapping interval of the RF gain interval corresponding to the current RF state, the gain control word obtained in the coarse segmentation mode may be smaller than the gain control word obtained in the subdivision mode, resulting in a decrease in channel quality and lower throughput; if using In the subdivision mode, because the gain adjustment speed is slow in the subdivision mode, when a block (interference) occurs in the wireless high-frequency signal, the gain of the UE RF front-end cannot be adjusted in time, resulting in a lower throughput rate

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