Key Techniques Of Channel Simulation System For Intermediate Frequency

Wireless communication system has become one of the galloping communication research fields, but the outdoor test of wireless prototypes costs too much and can not easily recur when time or locaton changes. By contrast, channel simulator in the lab can artificially produce realistic radio channel effects by setting different parameters while maintains the most facticities.Modern channel simulators are most based on Base Band and Radio Frequency simulation theories. According to the well developed Radion Frequency (RF) simulation, the complexity of Base Band (BB) simulation degrades, but unfortunately, the performance degrades too. The compromise scheme proposed in this paper is to develop a new simulation theory for Intermediat Frequency (IF) which can perform better than Base Band simulation but stretch the most performance of RF simulation.The paper proposed equivalent algorithm for Intermediate Frequency of three types of wireless channel: Large Scale Propagation, Multipath Propagation and Fading Channel. The simulation result shows that the equivalent simulation algorithms for Intermediate Frequency can impact the same effect on wireless signal as the RF simulation algorithms do whith much lower complexity.