METHOD AND SYSTEM FOR RADIO FREQUENCY LOOPBACK TEST AND METHOD AND DEVICE FOR PROVIDING LOCAL OSCILLATION OF LOOPBACK TEST

摘要

A method and a system for radio frequency loopback test and a method and a device for providing local oscillation of loopback test are provided. The method for radio frequency loopback test includes: a certain clock signal is selected from a communication system as the local oscillation. The local oscillation is same as the duplex interval frequency of the communication system. The debugged signal is mixed to the working frequency point of the receiver according to the local oscillation and then is sent. The debugged signal is made to error code comparison. By selecting the clock signal to mix the emission signal to the working frequency point of the receiver, the defects of high cost of materiel, high cost of manufacture, high probability of failure and the existence of the stray interference which are induced from the duplex interval frequency signal provided by the independent local oscillation circuit for loopback test in the procedure of the radio frequency loopback test in the prior art are overcame.