Phase noise compensation apparatus, demodulation apparatus, communication apparatus, communication system, and phase noise compensation method

A phase noise compensation apparatus used for a demodulation apparatus, the demodulation apparatus demodulating a transmission signal which is modulated using a modulation scheme that uses phase information for data identification, the phase noise compensation apparatus comprising:

• a phase detector configured to section reception symbols including a reception data symbol and a reception pilot symbol included in the transmission signal into a block of a predetermined number of symbols and detect a phase error of a reception pilot symbol sequence obtained by extracting the reception pilot symbols included in the sectioned reception symbol sequence;
• a first filter including an infinite impulse response filter and configured to refer to the phase error in a forward direction in time and sequentially estimate a first phase noise component of the reception pilot symbol;
• a second filter including an infinite impulse response filter and configured to refer to the phase error in a backward direction in time and sequentially estimate a second phase noise component of the reception pilot symbol;
• synthesis processing unit configured to estimate a phase noise component of the reception symbol included in the reception symbol sequence based on the first phase noise component, the second phase noise component, and the phase error;
• and
• a phase rotator configured to rotate a phase of the reception symbol based on the estimated phase noise component of the reception symbol
• wherein the synthesis processing unit estimates the phase noise component of each reception data symbol included between a k−1th reception pilot symbol and a kth reception pilot symbol based on the first phase noise component of the kth reception pilot symbol and the second phase noise component of the k−1th reception pilot symbol, when the reception pilot symbol sequence includes M reception pilot symbols, where M is a positive integer, and k is a positive integer of more than or equal to 1 and less than or equal to M.