Atsushi Hatabu

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The Kronecker channel model of wireless communication is analyzed using statistical mechanics methods. In the model, spatial proximities among transmission/reception antennas are taken into account as certain correlation matrices, which generally yield non-trivial dependence among symbols to be estimated. This prevents accurate assessment of the(More)
A statistical mechanical framework to analyze linear vector channel models in digital wireless communication is proposed for a large system. The framework is a generalization of that proposed for code-division multiple-access systems in Europhys. Lett., 76 (2006) 1193 and enables the analysis of the system in which the elements of the channel transfer(More)
This paper describes an analysis-based method for optimizing the timing of decisions regarding early termination of block matching (BM) in the application of a successive similarity detection algorithm (SSDA). Although the SSDA reduces BM computational costs, making decisions to terminate BM or not consumes additional processor cycles. Here, total costs,(More)
This paper describes the implementation of an H.264 video encoder designed for use on a low-power DSP core (NEC Electronics Corporation's SPXK6) for mobile equipment, which offers not only low computational complexity but small load fluctuation between average and peak load. In order to reduce the high degree of complexity that H.264 ordinarily requires,(More)
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