Abstract
It is worried that the ITS may suffer interference from broadcast system or mobile communication system. Thus, we proposed a power inversion adaptive array which can suppress an interference wave in ITS propagation environment. However, the interference suppression performance is reduced due to multipath fading. As a countermeasure, we devised a continue control method for power inversion to follow the change of propagation environment. In this paper, the optimal snapshot number for properly estimating a correlation matrix is examined. As the result of examination, it is clarified that the optimal number of snapshots is about 30 times.
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