Pulse or digital communications – Transmitters
Reexamination Certificate
2007-11-13
2007-11-13
Tran, Khanh C. (Department: 2611)
Pulse or digital communications
Transmitters
Reexamination Certificate
active
10887310
ABSTRACT:
A digital broadcast transmission system and a signal processing method thereof offers improved receptability. The digital broadcast transmission system includes an error correction encoding unit for encoding an input signal according to a predetermined error correction method; a synchronous signal inserting unit for inserting a synchronous signal in the input signal after the error correction encoding; a first pilot inserting unit for inserting a first pilot signal in the input signal which contains the synchronous signal therein; a second pilot inserting unit for inserting a plurality of second pilot signals in the input signal which contains the first pilot signal therein; a pulse shaping filter for pulse shaping the input signal with the first and the second pilot signals according to a predetermined roll-off factor; and a radio frequency (RF) unit for transmitting the pulse-shaped input signal to a transmission channel band. By inserting a plurality of pilot signals in the transmitted data, problems associated with disappearance of only pilot signal due to poor channel environment can be overcome.
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Kim Joon-son
Kwak Jung-won
Lee Dong-hoon
Park Chan-sub
Sughrue Mion Pllc.
Tran Khanh C.
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