Automatic gain control regulating method for received signals and signal receiving equipment

A technology for automatic gain control and signal receiving equipment, which is used in transmission control/equalization, wireless communication, power management, etc.
CN101959288BActive Publication Date: 2013-08-21SPREADTRUM COMM (SHANGHAI) CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SPREADTRUM COMM (SHANGHAI) CO LTD
Publication Date
2013-08-21

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Abstract

The invention relates to a signal receiving technology, and discloses an automatic gain control regulating method for received signals and signal receiving equipment. In the method, DwPTS is used as guidance, if the RSSI change of the DwPTS is more than a threshold, the AGC gain value of the corresponding time slot of a current sub-frame is regulated according to the RSSI change value of the DwPTS, a signal of the corresponding time slot in the current sub-frame is received by the regulated AGC gain value; and if the RSSI change of the DwPTS is less than or equal to the threshold, the signal of the corresponding time slot is received directly by the AGC gain value of the corresponding time slot the time slot in the current sub-frame which is calculated by the AGC gain value of the last sub-frame. Therefore, the method can deal with the situation of great signal change, meet the requirement of signal mutation, and improve the accuracy of subsequent signal processing.
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Description

technical field

[0001] The invention relates to a signal receiving technology, in particular to an automatic gain control adjustment technology for a received signal. Background technique

[0002] Automatic Gain Control (AGC) is a very important strategy for receiving equipment. Its essential purpose is to adjust the range of the signal at the front end of the receiving equipment. When the signal is strong, its gain is automatically reduced; When the signal is weak, its gain is automatically increased, thus ensuring the uniformity of strong and weak signals. To prevent the receiving device from receiving a signal that is too small or oversaturated, which will affect the subsequent signal processing of the receiving device. Within the normal fluctuation range of the signal, such as 20dB, the general AGC can keep up with the change of the signal amplitude, and will not have a great impact on the subsequent signal processing. The AGC technology of the receiving device can be ...

Claims

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