Device for receiving broadcast signal, device for transmitting broadcast signal, and method therefor

1. A receiving apparatus comprising:

a reception unit configured to receive a signal including at least a transmitter identification (TxID) signal;

a TxID detection unit configured to detect the TxID signal included in the received signal;

a TxID processing unit configured to change a frequency band of the TxID signal based on a result of detection of the TxID signal included in the received signal; and

a reduction unit configured to reduce the TxID signal from the received signal by using the TxID signal having the changed frequency band,

wherein the TxID processing unit includes a filter configured to change the frequency band of the TxID signal, and

wherein the filter is a low pass filter.

2. The receiving apparatus of claim 1 , wherein the TxID processing unit is configured to change the frequency band of the detected TxID signal into a predetermined band.

3. The receiving apparatus of claim 1 , wherein the received signal further includes a preamble signal, and

the TxID processing unit is configured to change the frequency band of the detected TxID signal based on a frequency band of the preamble signal.

4. The receiving apparatus of claim 1 , wherein the received signal further includes at least one of a channel estimation signal or a preamble signal, and

the receiving apparatus further comprises:

a channel estimation unit configured to estimate a channel using the channel estimation signal or the preamble signal,

wherein the TxID processing unit is configured to process the TxID signal based on a result of the channel estimation.

5. The receiving apparatus of claim 4 , wherein the TxID processing unit is configured to generate a TxID sequence of the TxID signal and process the TxID sequence based on the result of the channel estimation.

6. The receiving apparatus of claim 5 , wherein the channel estimation signal includes a bootstrap.

7. The receiving apparatus of claim 1 , wherein the TxID processing unit includes a first conversion unit configured to convert the TxID signal to a frequency domain signal.

8. The receiving apparatus of claim 7 , further comprising:

a second conversion unit configured to convert the received signal to a frequency domain signal,

wherein the reduction unit is configured to reduce the converted TxID signal in the converted signal in a frequency domain.

9. The receiving apparatus of claim 1 , further comprising:

a signal processing unit configured to decode a signal in which the TxID signal is reduced.

10. The receiving apparatus of claim 9 , wherein the signal processing unit is configured to perform low density parity check (LDPC) decoding.

11. The receiving apparatus of claim 1 , wherein the received signal further includes a preamble signal, and

the preamble signal is an advanced television system committee (ATSC) 3.0 signal.

12. A receiving method comprising:

receiving a signal including at least a transmitter identification (TxID) signal;

detecting the TxID signal included in the received signal;

changing a frequency band of the TxID signal based on a result of detection of the TxID signal included in the received signal; and

reducing the TxID signal from the received signal by using the TxID signal having the changed frequency band,

wherein the changing of the frequency band includes changing the frequency band of the detected TxID signal by using a filter, and

wherein the filter is a low pass filter.

13. The receiving method of claim 12 , wherein the changing of the frequency band includes changing the frequency band of the detected TxID signal into a predetermined band.

14. The receiving method of claim 12 , wherein the received signal further includes a preamble signal, and

the changing of the frequency band includes changing the frequency band of the detected TxID signal based on a frequency band of the preamble signal.

15. The receiving method of claim 12 , wherein the received signal further includes at least one of a channel estimation signal or a preamble signal, and

the method further comprising:

estimating a channel using the channel estimation signal or the preamble signal, and

processing the TxID signal based on a result of the channel estimation.

16. The receiving method of claim 15 , wherein the processing of the TxID signal comprises generating a TxID sequence of the TxID signal and processing the TxID sequence based on the result of the channel estimation.