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Automatic gain control method, device, chip and equipment

A technology of automatic gain control and electronic equipment, applied in the field of communication, can solve the problems such as the inability to use the AGC scheme of the LTE system, and achieve the effect of improving the downlink decoding performance

Active Publication Date: 2021-06-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the 5G (New Radio (NR)) system, due to different protocols, the AGC scheme of the LTE system cannot be used

Method used

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  • Automatic gain control method, device, chip and equipment
  • Automatic gain control method, device, chip and equipment
  • Automatic gain control method, device, chip and equipment

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0030] The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

[0031] Aiming at the problem of how to implement AGC in the NR system, a feasible application solution is to use the reference signal in the NR system as ...

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Abstract

The embodiment of the invention provides an automatic gain control method and device, a chip and equipment. The method comprises the steps of, when a signal exists in a current time slot, calculating RSSI of the signal in the current time slot, and obtaining an RSSI calculation result, wherein the signal comprises but is not limited to PDSCH DMRS, PDCCH DMRS, SSB and TRS; and performing automatic gain control according to the RSSI calculation result. According to the method provided by the embodiment of the invention, various signals in an NR system are tracked, AGC is realized by combining RSSI of the various signals, the real-time performance of AGC can be effectively improved, and the problem of ADC saturation caused by the change of the number of scheduled RBs can be solved, so that the method adapts to a scene in which the signal strength is rapidly changed, and the downlink decoding performance is improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to an automatic gain control method, device, chip and equipment. Background technique [0002] In the communication application scenarios of the prior art, the basic principle of automatic gain control (Automatic Gain Control, AGC) is: by adjusting the gain of the radio frequency front end, the analog-to-digital converter (Analog -to-digital converter, ADC) works in a suitable range. The specific operation is to set the expected target power RSSI of the received signal target (It makes the receiver ADC work in a suitable range) (RSSI is the Received Signal Strength Indication (Received Signal Strength Indication)), then calculates the received signal power RSSI, and compares it with the target power RSSI target compared to the target power RSSI target Larger to reduce the gain (GAIN), than the target power RSSI target Small increases the gain. [0003] In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/52
CPCH04W52/245H04W52/52Y02D30/70
Inventor 邓绍庆
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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