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This paper analyzes relationship between video contents and subjective video quality for Internet broadcasting, and applies the results to the rate control methods. In this analysis, we classify video programs into some groups in which a large majority of users feel the same subjective video quality. We investigate the relationship by conducting an(More)
This paper describes experimental results of an antenna selection system that is applied to a receiver side of multiple-input multiple-output (MIMO) systems. We proposed an antenna selection system that each MIMO receive branch has different polarization and directional pattern antennas and selects one antenna combination by using radio frequency micro(More)
A six-port receiver can restore the original modulated signal by calculating the detected envelopes and system parameters of the six-port circuit. The system parameters have been determined at each frequency in advance. The six-port receiver has an advantage in the point that the user can select the frequency arbitrarily, but there is a problem of nonlinear(More)
We introduce our activities for applications of first-principles theoretical calculations to various research and development processes for innovative electronic products. We present our recent selected results for four kinds of materials, which are the rare-earth element doped ceramic dielectric material BaTiO(3), BaTiO(3) ceramic nanoclusters and(More)
This paper describes a real-time performance evaluation of a receive antenna selection method for a spatial multiplex-ing Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system in a real environment. In this real-time performance evaluation, we employed a receive antenna selection method to select a suitable set of(More)