Hiroyuki Hatano

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In this paper, we propose a new Cyclic Prefix (CP) design for Orthogonal Frequency Division Multiplexing (OFDM) system with higher tranmission efficiency. The proposed signal design concatenates some OFDM symbols without guard interval and adds one CP per the concatenated symbols. Obviously, the proposed CP design results in severe inter-symbol-interference(More)
Recently, we can use various network connections at several location using mobile terminals. Services by using location information expand for the mobile terminals. For these services, we need to estimate the location of the moving mobile devices. It is well-known that we can use the GPS in order to obtain the absolute position of the terminal. On the other(More)