Patent ID: 8031811

Claim:
A dynamic direct current offset canceling apparatus comprising: a section for detecting dynamic direct current offset in longest overlapping part sequences, that detects dynamic direct current offset in the longest overlapping part sequences from differences between sampling values of a first longest overlapping part sequence and sampling values of a second longest overlapping part sequence, the first longest overlapping part sequence and the second longest overlapping part sequence comprising overlapping part sequences in a training sequence of the received signal converted to a digital baseband signal; a section for detecting dynamic direct current offset outside longest overlapping part sequences, that detects dynamic direct current offset outside the longest overlapping part sequences from a difference between an average value of sampling values of the received signal which exists in a burst before the first longest overlapping part sequence, and an average value of sampling values of the received signal which exists in a burst after the second longest overlapping part sequence; and a direct current offset canceling section that adaptively subtracts a direct current offset value from the received signal based on the detection result outputted from the section for detecting dynamic direct current offset in the longest overlapping part sequences and the detection result outputted from the section for detecting dynamic direct current offset outside the longest overlapping part sequences.