FIELD: information technology.
SUBSTANCE: signal processing apparatus comprises: a first detection unit, a second detection unit, a duration determining unit, a duration information output unit and a demodulating means. The receiving system has transmission channel decoding processing unit and an information source decoding processing unit. Information processing methods describe operation of versions of information processing apparatus and receiving apparatus.
EFFECT: high quality of demodulation.
18 cl, 16 dwg
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