| abstract |
In a broadband ubiquitous network using a ubiquitous antenna system, a mark / space level of a signal for generating a time-division multiplexed signal with the same wavelength in an optical region, which is one of the factors that degrade EVM. It is an object of the present invention to provide an optical communication method, a transmitter, a receiver, and an optical communication system that can suppress inter-pulse interference. An optical communication method, a transmitter, a receiver, and an optical communication system according to the present invention use phase modulation instead of conventional intensity modulation when modulating an optical signal with a radio signal. The reception sensitivity was improved by canceling only the interference between optical pulses using the upper sideband and lower sideband of the modulated wave. [Selection] Figure 8 |