A field experiment of TV White Space (TVWS) communications was conducted using developed
systems following IEEE 802.22 and IEEE 802.11af standards and succeeded to have …

When the great disaster strikes, it is most important for victims to receive and transmit appropriate
information in order to evacuate immediately and to request for assistance and rescue. …

… Seishi Sasaki received the BE and the ME degrees from the Technological University of
Nagaoka, Niigata, Japan, in 1986 and 1988, respectively. In 1988, he joined Kokusai Electric Co…

Laminin is a basement membrane-specific glycoprotein (800 kDa) consisting of three chains:
A, B1, and B2. Laminin has diverse biological functions, which include stimulating …

Technical details are reported for a 1/2-inch cassette videotape recorder (VTR) developed
for recording the baseband high-definition TV (HDTV) signal. A recording time of 63 min was …

In this paper, we present a recently developed physical layer implementation of IEEE 802.22
prototype. The prototype includes the following components: a channel (CH) unit, a Medium …

The fact that the crest-line-like lines can be seen in the PPI image of ship radars was known
from relatively old days. Many trials obtaining wave information as wave directional spectrum…

The authors describe a low bit rate speech codec developed for the next generation of
narrow‐band (3 kHz/voice channel) private mobile radio. The speech encoding speed under the …

(in English) White space utilization in TV band has drawn much attention in many countries
as one of the solutions to solve the frequency resource depletion issue which is becoming a …

This paper discusses a low‐bit‐rate speech codec that can be operated in the 3.125‐kHz
band, which is half the minimum frequency band occupied at present, for use in next‐…