Backward compatible multi-carrier transmission system

Details Backward compatible multi-carrier transmission system Backward compatible multi-carrier transmission system

2004-08-11

2009-08-04

Phu, Phuong (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S240010, C375S261000, C375S264000, C375S279000, C375S298000, C348S388100

Reexamination Certificate

active

07570694

ABSTRACT:
The transmission system is backward compatible with a former transmission system (DVB-T), enabling a receiver of the former system to receive signals transmitted by a transmitter of the new transmission system. A new modulation is used to transmit additional information bits corresponding to a new service. The new modulation is specified by a combination of the former modulation with a new-built over modulation.

REFERENCES:
patent: 5467132 (1995-11-01), Fazel et al.

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