Automatic-gain-control (AGC) gain generating method and device

Abstract

The invention provides an AGC (automatic gain control) gain generating method and device, wherein the method comprises the following steps of: acquiring non-load power variation in the current control period which comprises at least one subframe; and generating an AGC gain of next control period according to the non-load power variation in the current control period and the AGC gain of the current control period. The device comprises a variation acquisition module and a gain generation module, wherein the variation acquisition module is used for acquiring the non-load power variation in the current control period which comprises at least one subframe; and the gain generating module is used for generating the AGC gain of the next control period according to the non-load power variation in the current control period and the AGC gain of the current control period. In the technical scheme provided by the invention, the AGC gain is generated according to the factors except the load change, the problem of in-place control in the prior art under the condition of larger load change is solved and the requirement on the bit width of an ADC (analog-digital converter) and a digital processing chip.

Description

technical field [0001] Embodiments of the present invention relate to the field of electronic technology, and in particular, to a method and device for generating an automatic gain adjustment gain. Background technique [0002] During the communication process, the power of the signal often changes with time due to factors such as channel fading, load size, and power control. Therefore, the communication receiver is required to have a certain receiving range to ensure that the signal can be received correctly. For example, in the Long Term Evolution (abbreviated as: LTE) system, the communication protocol stipulates that the minimum received signal power of the communication receiver is less than -100dBm, and the maximum received signal power is greater than -20dBm. Due to the relatively large power range of the received signal, it is necessary to require the analog-to-digital converter (Analog-to-Digital Converter; ADC for short) in the communication receiver and the subseq...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an automatic gain adjustment gain generation method and device, which is used to solve the problem that the AGC gain adjustment is not in place when the load fluctuates greatly, so as to reduce the bit width of the ADC and the digital processing chip

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