MULTI-CARRIER AND SPREAD SPECTRUM TRANSMITTER, ITS RECEIVER, SYSTEM AND METHOD FOR COMMUNICATION USING THEM

PROBLEM TO BE SOLVED: To provide a multi-carrier/spread spectrum transmitter, its receiver, a system and method for communications using these which show excellent path diversity and frequency diversity effects by a constitution simpler than that of conventional technique and has resistance against...

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Bibliographische Detailangaben
Hauptverfasser:	ONOZAKI KATSUO, HASHIMOTO TAKESHI, TAZAKI NOBUHIRO, KUROMOTO SHINICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MULTIPLEX COMMUNICATION TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a multi-carrier/spread spectrum transmitter, its receiver, a system and method for communications using these which show excellent path diversity and frequency diversity effects by a constitution simpler than that of conventional technique and has resistance against even an interference wave in a narrow band. SOLUTION: The transmitter 1 is provided with a DPSK/DQPSK modulation part 11, a spread spectrum modulation part 12, a mapping part 13, an inverse Fourier transform part 14 and a guard interval part 15. The receiver 2 is provided with a guard interval removing part 23, a Fourier transform part 24, a peak removing part 25, a DPSK/DQPSK demodulation part 26, a demapping part 27 and an integration part 28.