2024 Volume 144 Issue 8 Pages 718-724
A wireless communication system using spatial waveform modulation is proposed. The electromagnetic waves, which the transceivers of this system provide, transfer an information signal by using a spatially modulated electromagnetic waveform to achieve a better communication quality in an environment where electromagnetic scatters surround them. When the wireless system transfers an information signal on an electromagnetic wave at much higher frequency than that of this signal, the system modifies the propagating waveform consisting of plural electromagnetic waves to transfer the same signal because these waves become the wave varying its envelope at a different frequency from the propagation frequency. The modified waveform is able to increase an intensity of the information signal at the frequency which is much higher than that of the varying envelope. This system drastically improves either a data transfer range or a signal quality by using the rotating polarization of the transmitting waves with the same signal at different frequencies, in comparison with the conventional wireless system which uses the fixed polarization wave.
The transactions of the Institute of Electrical Engineers of Japan.C
The Journal of the Institute of Electrical Engineers of Japan