This paper focused at communication systems when train moved. The communication
propagation was influenced by building environment. The communication condition that …

Adaptive modulation is a powerful technique to improve the power efficiency and to increase
the data rate of communication system in the underwater acoustic channel, which has a time …

This research described the Doppler shift effect for the communication systems. The mobile
station moves with various velocities around the building's environment. Doppler's shift …

The transmission rate via radio increases to transmitting frequency increment. The higher
frequency the higher transmission rate. Video traffics require radio with large bandwidth …

This paper provides a report on a continuing research project on the development of rain
attenuation mitigation techniques for millimeter-wave wireless access to be implemented in …