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)
In this paper, we analyze Mean Square Error performances of the frequency offset estimator based on the Moose algorithm. From the analytical result, we indicate a possibility of the iteratively offset estimator and propose a modified estimator structure. By computer simulations, we evaluate the proposed iterative offset estimator and a compatibility with(More)
Radar networks show an interesting potential for safety and comfortable applications such as indoor monitoring or short-range automotive monitoring system. This paper presents our novel estimation algorithm of a target position. Especially we evaluate the performance about estimation accuracy and resistance to ghost targets under multipath environment. In(More)
This paper examines the feasibility of language transmission through a haptic foot interface. The devices tested the placement, timing, and complexity of an array of vibrating electromagnets with the optimal device using an array of ten electromagnets placed under the arch of one foot. Moderate proficiency was reached after only an hour of training at which(More)