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PHASE NOISE COMPENSATION APPARATUS, DEMODULATION APPARATUS, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND PHASE NOISE COMPENSATION METHOD
PHASE NOISE COMPENSATION APPARATUS, DEMODULATION APPARATUS, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND PHASE NOISE COMPENSATION METHOD
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机译:相位噪声补偿装置,解调装置,通信装置,通信系统以及相位噪声补偿方法
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摘要
A phase noise compensation apparatus is used for a demodulation apparatus for demodulating a transmission signal modulated by a modulation scheme that uses phase information for data identification. A phase detector detects a phase error of a reception pilot symbol sequence included in a reception symbol sequence. A first filter refers to the phase error detected in a time series manner and sequentially estimates first phase noise components. A second filter refers to the phase error detected in a reverse time series manner and sequentially estimates second phase noise components. The synthesis processing unit estimates a phase noise component of a reception symbol based on an estimated value of the first phase noise component, an estimated value of the second phase noise component, and the phase error. The phase rotator rotates a phase of the reception symbol based on the estimated phase noise component of the reception symbol.
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