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.

Active Publication Date: 2011-01-26
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the patents related to AGC retrieved by the inventor (such as the patent applications with application numbers 03141863.5, 03149787.X, 03134820.3, 200410042676.3, 200410101826.3 and 200510027892.5, etc.) or technical materials do not involve solutions to the above technical problems

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

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Embodiment Construction

[0028] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0030] The first embodiment of the present invention relates to an automatic gain control adjustment method for a received signal. The specific process is as figure 1 shown.

[0031] In step 101, the receiving device obtains the AGC gain value of each time slot of a certain i subframe through initial cell search (assuming that the downlink time ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/00H04B7/005
Inventor 刘威鑫董霄剑董亮刘继武
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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