Light receiving device and light receiving method

A light receiving device comprising:

• a converter to digitalize an analog signal with a given sampling clock frequency, the analog signal being obtained through a photoelectric conversion of a received optical signal;
• a plurality of fixed distortion compensators to compensate an output signal of the converter for waveform distortion with a fixed compensation amount that is different from each other;
• a plurality of compensation amount detector to detect a distortion compensation amount based on a phase-shift-detection sensitivity of each output signal of the plurality of the fixed distortion compensators;
• a distortion compensator to compensate for distortion with a distortion compensation amount detected by the compensation amount detector;
• a phase-adjusting-amount determiner to determine a sampling phase adjusting amount with use of an output signal of the phase shift detector circuit;
• and
• a phase adjusting circuit to reduce a phase difference between the sampling clock frequency and the received optical signal based on a determination result of the phase-adjusting-amount determiner.