METHOD FOR ESTIMATING CHANNEL POWER, METHOD FOR MONITORING FREQUENCY SPECTRUM CHARACTERISTIC, APPARATUS AND SYSTEM

摘要

A method, apparatus and system estimating channel power, and monitoring a frequency spectrum characteristic. A method for estimating channel power includes extracting frequency spectrum information from a received signal, so as to obtain a frequency spectrum of the received signal, estimating power of a central channel in the frequency spectra according to a power value of a flat area of the central channel, and estimating power of a neighboring channel in the frequency spectra according to a power value of a flat area of the neighboring channel. With the embodiments of the present disclosure, the power of the central channel and the power of the neighboring channel may be estimated by using only frequency spectrum information obtained by a single optical receiver, so as to quantitatively evaluate influence of a power imbalance effect, thereby ensuring precision of the power estimation, and reducing effects of nonideal factors on the estimated values.

主权项

1. An apparatus for estimating channel power, applicable to an optical receiver, the apparatus comprising:
an acquiring unit configured to acquire a received signal; an extracting unit configured to extract frequency spectrum information from the received signal to obtain a frequency spectrum of the received signal; a first estimating unit configured to estimate power of a central channel in the frequency spectrum according to a power value of a flat area of the central channel; and a second estimating unit configured to estimate power of a neighboring channel in the frequency spectrum according to a power value of a flat area of the neighboring channel.