Judgement of Reachability about 15-Puzzle

Based on multiple-input-multiple-output (MIMO) scattering wireless fading channel model, a dynamic receiving and transmitting model for MIMO wireless channels is proposed in this paper, which is used for analyzing impact of mobility of transceiver antennas on spatial correlation and capacity of MIMO wireless channels. The conclusion is reached, which these effects are determined by the original positions of transceiver antennas and by their velocity. The simulation results validate this impact and show that there exists an optimum angular spread that forces spatial correlation, which decreases with increasing antenna spacing and does not consistently decrease with increasing angular spread, to reach minimum.