The traffics from many smartphones in a bullet train are increasing. In this case, it is desirable to multiplex the traffic from many smartphones and relay to base station along the railroad line for the spectral efficiency. However, high speed channel variation occurs at entrance circuit of bullet train. We proposed Sequentially Switched Antenna Array Receiver. This proposed technology slows down the channel variation by switching antenna element to the opposite direction of travel of the train for practically fix receiving point. In this study, we considered the configuration and feasibility of proposed system.