| 摘要 |
Consistent the present disclosure, errored bits are inserted into a data stream, which is carried by an optical signal. The optical signal is transmitted over an optical link that may induce additional errors, i.e., add additional errored bits to the data stream. At the receive end, the optical signal is converted into a corresponding electrical signal that carries the data stream. The data stream is subject to forward error correction (FEC) decoding with an iterative decoder, for example. The iterative decoder decodes the data stream over a number of iterations until both the inserted errored bits and the additional errored bits are corrected. Since the number of inserted bits is known, the number of iterations required to correct the inserted bits is also known (“first iterations”). Accordingly, the number of iterations required to correct the additional errored bits caused by tranmission over the optical link may be determined based on the total number of iterations performed and the number of the first iterations.
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