METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING BROADCASTING-COMMUNICATION DATA

• US 20110075710A1
• Filed: 05/29/2009
• Published: 03/31/2011
• Est. Priority Date: 05/29/2008
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Park, Sung-Ik, Lim, Hyoungsoo, Lee, Soo-In, Kim, Heung-Mook
• Granted Patent: US 8,654,886 B2
• Time in Patent Office: Days
• US Class Current: 375/146
• CPC Class Codes: H04B 1/709 Correlator structure
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04W 52/322 Power control of broadcast channels

Abstract

A method and apparatus for transmitting/receiving broadcasting-communication data is provided. The apparatus includes: an original signal generator configured to receive the original data and generate baseband original signals; a first modulator configured to receive the baseband additional signals and generate original signals of a predetermined band; an additional signal generator configured to receive the additional data and generate baseband additional signals; a second modulator configured to receive the baseband additional signals and generate additional signals of a predetermined band; an average power controller configured to control an average power of the additional signals of the predetermined band; an inserter configured to insert the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and a transmitter configured to transmit the mixed signals of the predetermined band.

Claims

1. An apparatus for transmitting broadcasting-communication data including original data and additional data, comprising:

an original signal generator configured to receive the original data and generate baseband original signals;

a first modulator configured to receive the baseband additional signals and generate original signals of a predetermined band;

an additional signal generator configured to receive the additional data and generate baseband additional signals;

a second modulator configured to receive the baseband additional signals and generate additional signals of a predetermined band;

an average power controller configured to control an average power of the additional signals of the predetermined band;

an inserter configured to insert the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and

a transmitter configured to transmit the mixed signals of the predetermined band.

3. The apparatus of claim 1, wherein the original signal generator includes:

a randomizer configured to receive the original data and output randomized original data;

an outer encoder configured to receive the randomized original data and output outer-encoded original data;

an interleaver configured to receive the outer-encoded original data and output interleaved original data;

an inner encoder configured to receive the interleaved original data and output inner-encoded original data; and

a multiplexer configured to receive the inner-encoded original data and multiplex the inner-encoded original data with a field synchronization signal and a segment synchronization signal to thereby generate baseband original signals.

4. The apparatus of claim 1, wherein the additional signal generator includes:

an error correction encoder configured to receive the additional data and output error correction-encoded additional data;

a spreading sequence generator configured to generate an orthogonal or quasi-orthogonal spreading sequence; and

a spreader configured to map the error correction-encoded additional data to the spreading sequence to thereby generate baseband additional signals.

5. The apparatus of claim 4, wherein the error correction encoder includes:

an encoder configured to receive the additional data and output encoded additional data for removing noise; and

an interleaver configured to receive the encoded additional data for removing noise and output interleaved additional data.

6. The apparatus of claim 1, wherein the average power controller includes:

a first average power calculator configured to calculate an average power of the original signals of the predetermined band generated in the first modulator;

a second average power calculator configured to calculate an average power of the additional signals of the predetermined band generated in the second modulator;

an insertion level decider configured to receive and compare the average power of the original signals of the predetermined band and the average power of the additional signals of the predetermined band with each other and determine an insertion level; and

a multiplier configured to multiply the additional signals of the predetermined band generated in the second modulator by the insertion level to thereby control the average power of the additional signals of the predetermined band.

7. The apparatus of claim 1, wherein the average power controller includes:

a first average power calculator configured to calculate an average power of the baseband original signals generated in the original signal generator;

a second average power calculator configured to calculate an average power of the baseband additional signals generated in the additional signal generator;

an insertion level decider configured to receive and compare the average power of the baseband original signals and the average power of the baseband additional signals with each other and determine an insertion level; and

a multiplier configured to multiply the additional signals of the baseband generated in the additional signal generator by the insertion level to thereby control the average power of the additional signals of the baseband.

2. An apparatus for transmitting broadcasting-communication data including original data and additional data, comprising:

an original signal generator configured to receive the original data and generate baseband original signals;

an additional signal generator configured to receive the additional data and generate baseband additional signals;

an average power controller configured to control an average power of the baseband additional signals;

an inserter configured to insert the baseband additional signals with a controlled average power to the baseband original signals to thereby generate baseband mixed signals;

a modulator configured to receive the baseband mixed signals and generate mixed signals of a predetermined band; and

a transmitter configured to transmit the mixed signals of the predetermined band.

8. A method for transmitting broadcasting-communication data including original data and additional data, comprising:

receiving the original data and generating baseband original signals;

receiving the baseband original signals and generating original signals of a predetermined band;

receiving the additional data and generating baseband additional signals;

receiving the baseband additional signals and generating additional signals of a predetermined band;

controlling an average power of the additional signals of the predetermined band;

inserting the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and

transmitting the mixed signals of the predetermined band.

10. The method of claim 8, wherein said receiving the original data and generating baseband original signals includes:

receiving the original data and outputting randomized original data;

receiving the randomized original data and outputting outer-encoded original data;

receiving the outer-encoded original data and outputting interleaved original data;

receiving the interleaved original data and outputting inner-encoded original data; and

receiving the inner-encoded original data and multiplexing the inner-encoded original data with a field synchronization signal and a segment synchronization signal to thereby generate baseband original signals.

11. The method of claim 8, wherein said receiving the additional data and generating baseband additional signals includes:

receiving the additional data and outputting error correction-encoded additional data;

generating an orthogonal or quasi-orthogonal spreading sequence; and

mapping the error correction-encoded additional data to the spreading sequence to thereby generate baseband additional signals.

12. The method of claim 11, wherein said receiving the additional data and outputting error correction-encoded additional data includes:

receiving the additional data and outputting encoded additional data for removing noise; and

receiving the encoded additional data for removing noise and outputting interleaved additional data.

9. A method for transmitting broadcasting-communication data including original data and additional data, comprising:

receiving the original data and generating baseband original signals;

receiving the additional data and generating baseband additional signals;

controlling an average power of the baseband additional signals;

inserting the baseband additional signals with a controlled average power to the baseband original signals to thereby generate baseband mixed signals;

receiving the baseband mixed signals and generating mixed signals of a predetermined band; and

transmitting the mixed signals of the predetermined band.

13. A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;

a first demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;

an original data generator configured to receive the baseband mixed signals and generate original data;

an original signal generator configured to receive the original data and generate baseband original signals;

a modulator configured to receive the baseband original signals and generate original signals of a predetermined band;

a subtractor configured to subtract the original signals of the predetermined band from the mixed signals of the predetermined band to thereby generate additional signals of a predetermined band;

a second demodulator configured to receive the additional signals of the predetermined band and generate baseband additional signals; and

an additional data generator configured to receive the baseband additional signals and generate additional data.

17. The broadcasting-communication data receiving apparatus of claim 13, wherein the original data generator includes:

an inner decoder configured to receive the baseband mixed signals and output inner-decoded baseband mixed signals;

a deinterleaver configured to receive the inner-decoded baseband mixed signals and output deinterleaved baseband mixed signals;

an outer decoder configured to receive the deinterleaved baseband mixed signals and output outer-decoded baseband mixed signals; and

a derandomizer configured to generate original data by receiving and derandomizing the outer-decoded baseband mixed signals.

18. The broadcasting-communication data receiving apparatus of claim 13, wherein the additional data generator includes:

a despreading sequence generator configured to generate an orthogonal or quasi-orthogonal sequence;

a correlator configured to calculate correlation values between the baseband additional signals and the despreading sequence, select a largest correlation value, and output baseband additional signals having a spreading gain by the largest correlation value; and

a first decoder configured to remove noise from the baseband additional signals outputted from the correlator.

19. The broadcasting-communication data receiving apparatus of claim 18, wherein the decoder includes:

a deinterleaver configured to receive the baseband additional signals outputted from the correlator and output deinterleaved baseband additional signals; and

a noise removing decoder configured to remove noise from the deinterleaved baseband additional signals obtained in the deinterleaver.

14. A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;

a first demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;

an original data generator configured to receive the baseband mixed signals and generate original data;

a decider configured to generate baseband original signals by removing components other than the baseband original signals from the baseband mixed signals;

a modulator configured to receive the baseband original signals and generate original signals of a predetermined band;

a subtractor configured to subtract the original signals of the predetermined band from the mixed signals of the predetermined band to thereby generate additional signals of a predetermined band;

a second demodulator configured to receive the additional signals of the predetermined band and generate baseband additional signals; and

an additional data generator configured to receive the baseband additional signals and generate additional data.

15. A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;

a demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;

an original data generator configured to receive the baseband mixed signals and generate original data;

an original signal generator configured to receive the original data and generate baseband original signals;

a subtractor configured to subtract the baseband original signals from the baseband mixed signals to thereby generate baseband additional signals; and

an additional data generator configured to receive the baseband additional signals and generate additional data.

16. A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;

a demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;

an original data generator configured to receive the baseband mixed signals and generate original data;

a decider configured to generate baseband original signals by removing components other than the baseband original signals from the baseband mixed signals;

a subtractor configured to subtract the baseband original signals from the baseband mixed signals to thereby generate baseband additional signals; and

an additional data generator configured to receive the baseband additional signals and generate additional data.

20. A broadcasting-communication data receiving method for receiving mixed signals including original signals and additional signals, comprising:

receiving the mixed signals and outputting mixed signals of a predetermined band;

receiving the mixed signals of the predetermined band and generating baseband mixed signals;

receiving the baseband mixed signals and generating original data;

receiving the original data and generating baseband original signals;

receiving the baseband original signals and generating original signals of a predetermined band;

subtracting the original signals of the predetermined band from the mixed signals of the predetermined band to thereby generate additional signals of a predetermined band;

receiving the additional signals of the predetermined band and generating baseband additional signals; and

receiving the baseband additional signals and generating additional data.

21. (canceled)

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