Universal standing-wave ratio detection method for TDD-LTE RRU and FDD LTE RRU
A technology for VSWR detection and return loss, applied in wireless communication, transmission monitoring, electrical components, etc. Effect
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[0041] The embodiment of the present application solves the problem in the prior art that the standing wave ratio detection of TD-LTE and FDD-LTE RRU cannot be realized simultaneously by providing a general standing wave ratio detection method of TDD and FDD LTE RRU.
[0042] The technical solution of the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:
[0043] A general standing wave ratio detection method for TDD and FDD LTE RRU, comprising the following steps:
[0044] Step 1. Obtain the time delay T between the downlink signal and the previous reverse link signal dl ;
[0045] Step 2, obtain the configuration information of the cyclic prefix of the LTE wireless frame, and obtain the PBCH signal duration T according to the configuration information of the cyclic prefix PB ;
[0046] Step 3, the CPU sends a signal through the FPGA to switch the switch of the feedback link to the forward directio...
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