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US 7,889,802 B2Granted
Demodulating device, method and program
AssigneeSony Corporation
InventorsTaku Yamagata, Toshihisa Hyakudai, Shigenari Kawabata
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AssigneeSony Corporation
InventorsTaku Yamagata, Toshihisa Hyakudai, Shigenari Kawabata
Estimating the term…
A demodulator includes a complex conjugate signal generator to generate a complex conjugate signal of an OFDM time domain signal (complex signal including an I channel signal and Q channel signal) supplied from an orthogonal demodulation circuit, a delaying unit to delay, by an integral multiple of a predetermined period 1H or 2H, the complex conjugate signal supplied from the complex conjugate signal generator, a complex multiplier to make complex multiplication on the basis of the complex signal generated by the orthogonal demodulation circuit and complex conjugate signal delayed by the integral multiple of the predetermined period by the delay unit, and a determining unit to determine whether an interference wave is included in the modulated signal by making a comparison between the complex multiplication value resulted from the complex multiplication made by the complex multiplier and an arbitrary threshold.
A demodulating apparatus that receives a signal modulated with the orthogonal frequency division multiplexing (OFDM) technique and demodulates the modulated signal, the demodulating apparatus comprising:
A demodulating method of receiving a signal modulated with the orthogonal frequency division multiplexing (OFDM) technique and demodulating the modulated signal, the method comprising the steps of:
A non-transitory computer readable recording medium having instructions that when executed by a computer allows the computer to receive a signal modulated with the orthogonal frequency division multiplexing (OFDM) technique and demodulate the modulated signal comprising the steps of:
Dependencies are inferred from the claim text.