TD-LTE automatic gain control method and device

Abstract

The invention provides a TD-LTE automatic gain control method. According to the TD-LTE automatic gain control method, average power of corresponding symbols in each TD-LTE frame is calculated with the frame size as the unit in the frequency point scanning and main synchronous symbol SS detection stage, with half of the frame size as the unit in the auxiliary synchronous symbol SSS detection and PBCH reading stage, and with the subframe length as the unit in the downlink service channel receiving stage; the most reasonable power gain control values in all stages can be obtained by comparing the average power with a power upper limit and / or power lower limit, a first target power value and a second target power value. The invention further provides a TD-LTE automatic gain control device. According to the TD-LTE automatic gain control method, the environmental characteristics of the three stages are distinguished, and the flexibility of power control is improved.

Description

technical field [0001] The present invention relates to long term evolution (LTE, Long Term evolution) wireless communication technology, in particular to a time division long term evolution (TD-LTE, Time Division Long Term Evolution) automatic gain control (AGC, Automatic Gain Control) method and equipment. Background technique [0002] LTE is the evolution of the third generation (3G, Third Generation) mobile communication system, due to the use of Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology and Multiple-Input Multiple-Output (MIMO, Multiple-Input Multiple-Out-put ) technology and other core technologies can be regarded as quasi-4G technologies. The LTE system can provide a peak rate of 100Mbps downlink and 50Mbps uplink under a 20MHz spectrum bandwidth, which can improve the performance of cell edge users and increase cell capacity. [0003] Currently, the LTE system includes TD-LTE and Frequency Division Duple...

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