Pulse or digital communications – Transmitters – Amplitude modulation
Reexamination Certificate
2006-05-23
2006-05-23
Burd, Kevin (Department: 2631)
Pulse or digital communications
Transmitters
Amplitude modulation
C375S265000, C375S277000, C375S308000
Reexamination Certificate
active
07050511
ABSTRACT:
The in-band adjacent-channel digital audio broadcasting system includes a scrambling unit for scrambling a signal to be broadcasted, thereby generating a scrambled signal; an outer coding unit for performing a first encoding of the scrambled signal, thereby generating an outer encoded signal; an outer interleaving unit for performing a first interleaving of the outer encoded signal a byte by byte basis, thereby generating an outer interleaved signal; an inner coding unit for performing a second encoding the outer interleaved signal, thereby generating an inner encoded signal; an inner interleaving unit for performing a second interleaving of the inner encoded signal, thereby generating an inner interleaved signal; a modulating unit for modulating the inner interleaved signal, thereby generating an orthogonal frequency division multiplexing (OFDM) symbols; a guard interval inserting unit for inserting a guard interval between the OFDM symbols in order to eliminate an inter-symbol interference, thereby generating an OFDM frame; and an RF processing unit for performing a conversion of the OFDM frame into an analog radio frequency signal so that the OFDM signal can be transmitted in a specific frequency channel of an FM frequency band, and for amplifying and outputting the analog radio frequency signal.
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Jeong Young-Ho
Kim Geon
Lee Soo-In
Park So-Ra
Aghdam Freshteh N
Blakely & Sokoloff, Taylor & Zafman
Burd Kevin
Electronics and Telecommunications Research Institute
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