Abstract: The channel and link interference simulation is one of the key technologies for the data link test simulation and evaluation system. In order to simulate the non-ideal character of the real operation wireless enviroment for the data link system in local area network, the channel condition and interference characteristic of the typical application enviroment needs to be analyzed and modelled, and the data link system performance under different enviromental conditons needs to be simulated and verified. This paper first analyzes the related principle and mechanism of the several kind of common channel and link interference simulation tools, then it sudies and proposes the methods and schemes of the transmission delay, channel and link interference and link-level simulation. Besides, several key problems are also anlyzed and the solutions are proposed. The validation effect of the proposed methods in the data link test simulation and evaluation system is good, which is able to provide the wireless channel and link interference simulation tools for the reliability and stability of the data link system, thus providing the reference and basis for the design of the data link system.

Key words: Data link, Test simulation, Channel, Link interference