Patent ID: 11876737
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A reception apparatus for an OFDM-based broadcasting system, comprising:
a frequency down-conversion unit for performing frequency down-conversion on a signal received from a reception antenna;
an extended OFDM demodulation unit for demodulating a frequency down-converted signal and then generating a demodulated extended frame;
an extended frame separation unit configured to separate the demodulated extended frame into multiple transmission frames based on a frequency band; and
multiple reception data reconstruction units for reconstructing the multiple transmission frames into multiple pieces of reception data,
wherein each of the multiple reception data reconstruction units comprises:
a deframing and deinterleaving unit for deframing and deinterleaving a corresponding transmission frame and then generating deframed data;
a channel-decoding unit for decoding the deframed data and then generating decoded data;
a data output unit for outputting the decoded data as reception data, and

wherein the frequency down-converted signal is composed of multiple subcarriers based on the frequency,
wherein effective subcarriers among the subcarriers may be added to the frequency guard bands of an existing channel transmission frame, and
wherein the demodulated extended frame may have a form in which a high channel transmission frame and a low channel transmission frame are added to the existing channel transmission frame.