A receiving channel gain automatic control method and device

A technology of gain automatic control and receiving channel, which is applied in the field of communication, can solve the problems that the receiving end cannot know the received signal power, can not predict the received signal power, etc., and achieve the effect of improving the transmission delay and compressing the gain adjustment delay of the receiving channel
CN104125631BActive Publication Date: 2017-09-19DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2017-09-19

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Abstract

The invention discloses a receiving channel gain automatic control method and equipment, the method includes: the receiving end receives data from the sending end, and each time slot of the data includes an automatic gain control training AGCT period and a data PDATA period; wherein, The AGCT period includes a training signal for automatic gain control AGC, and the PDATA period includes data content; the receiving end uses the training signal for AGC carried in the AGCT period to perform the training signal for this time slot Receive channel gain automatic control. In the embodiment of the present invention, by carrying the training signal for AGC in the AGCT period of the data, the receiving end can use the training signal for AGC carried in the AGCT period to perform automatic control of the receiving channel gain of this time slot, Therefore, when the received signal power changes rapidly, it is ensured that the gain of the receiving channel can be quickly adjusted to adapt to the change of the received signal power.
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Description

technical field

[0001] The present invention relates to the field of communication technology, in particular to a receiving channel gain automatic control method and equipment. Background technique

[0002] The technical characteristics of the Internet of Vehicles based on TDMA (Time Division Multiple Access) technology include: (1) Vehicles are synchronized by GNSS (Global Navigation Satellite System, Global Navigation Satellite System) and divided based on GNSS timing Time slot, each vehicle occupies a time-frequency resource of a time slot alone, and different users use different time slots; (2) 2 antennas are used for reception; (3) When the vehicle sends information, the range that needs to be covered is up to 300 meters, The closest distance to the adjacent car is 2 meters, and the dynamic range of the received signal is relatively large; (4) Due to the strong mobility of the car and the rapid change of the network topology, it is impossible to predict the distance inf...

Claims

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