Intelligent channel emulator design based on signal power adaptive linking optimisation

In order to adapt to the special requirements of different measurement systems for channel simulators, especially the differentiated needs of input and output signal power, this paper proposes an innovative design method for intelligent channel simulators based on adaptive link optimisation of signal power. The design adopts an all-link power adaptive link optimisation algorithm, which realises the precise control and intelligent adjustment of the signal power of each link inside the channel simulator. Compared with the traditional methods of input link power independent control and output link power independent control, this method maintains the best output signal quality through the adaptive detection and matching of RF input and output signal power, as well as the fast response power adjustment of key components such as the receiving channel, the sampling preprocessing module, and the signal recovery processing module, and so on. The test results show that the intelligent channel simulator can automatically identify and match the input and output signal powers of different systems under test, the output signal power accuracy converges rapidly, the signal quality is good in a large dynamic range of input and output power, and it meets the design requirements of channel simulators in the field of modern wireless communication in terms of intelligence and accuracy control.