| 摘要 |
A pre-compensation method for delays caused by optical fiber chromatic dispersion, a multi-sub-carrier signal generator applying the method, and a transmitter applying the signal generator are applicable to an optical orthogonal frequency-division multiplexing (OFDM) system. The pre-compensation method includes receiving a plurality of pre-compensation values, in which the pre-compensation values correspond to sub-carriers; and transmitting the sub-carriers after delaying the sub-carriers by time of the corresponding pre-compensation values. The delay time between the sub-carriers is estimated at a receiver end and a pre-compensation value of the transmitter is set according to the delay time. The transmitter delays the pre-compensation values respectively when transmitting the respective sub-carriers. Therefore, the respective sub-carriers are able to reach a receiver at nearly the same time, thereby achieving a purpose of pre-compensating for the delays caused by optical fiber chromatic dispersion.
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