| 摘要 |
<p>In an optical OFDM communication system, the PAPR is reduced. A sinusoidal wave output from an RF oscillator provided in a transmitter is phase-modulated using a baseband OFDM signal output from a transmitter-signal processing unit 100, and this phase-modulated sinusoidal wave is used to modulate an optical wave. Using this light as signal light to achieve optical communication enables a low PAPR value such as 6 dB or less to be achieved where the photoelectric power is high in an optical fiber, thus enabling the above described problems to be solved. This signal light travels through an optical fiber serving as the transmission line and is converted by a receiver into an electric signal. The electric signal is synchronously detected using a sinusoidal wave output from an RF oscillator oscillating at the same frequency as the above RF oscillator provided in the transmitter. Ordinary OFDM signal processing for reception is performed on the output of the synchronous detection to recover data.</p> |
