Yuuki Fukuzaki

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The authors have been developing the system, which analyzes pedestrian flow using Wi-Fi packet sensors. The sensors collect Wi-Fi packet called probe request packet, which is transmitted from a smartphone to search Wi-Fi access points. In addition, the cloud storage server is running to manage observed packets centrally and to compute pedestrian flow in(More)
The application of embedded DRAM to higher end processor applications including the replacement of L3 and L2 caches by high-speed logic based embedded DRAM promises a viable solution to the vexing problem of processor memory subsystem design. Memory performance and on-chip memory capacity are still limiting factors for many applications, and on-chip memory(More)
Pedestrian ow analysis using Wi-Fi packet sensors can easily collect the movement trajectories of individuals, has a high-resolution sensing ability, and is well suited to indoor operations. Thus it is regarded as one of the promising sensing technologies for Smart Cities targeting a variety of applications such as disaster prevention, the planning of(More)
Recently mobile base stations are getting increased, which is considered harmful for the Wi-Fi positioning methods. In this paper, three approaches for detecting Wi-Fi base station behaviors inappropriate for Wi-Fi signature sampling are introduced and their performance evaluations are presented. First approach is for outdoor environment using GPS or Wi-Fi,(More)
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