Broadcast receiving system and method for processing broadcast signals

Abstract

A broadcast receiving system capable of receiving mobile broadcast data and a method for processing broadcast signals are disclosed. The broadcast receiving system includes N number of antenna elements, a demodulator, a transmission parameter detector, and a block decoder. The N number of antenna elements receives each of the broadcast signals. The demodulator demodulates the broadcast signal having greater signal strength among each of the received broadcast signals. The transmission parameter detector detects the transmission parameter. The block decoder symbol-decodes the mobile broadcast service data included in the received broadcast signal in block units, based upon the detected transmission parameter.

What is claimed is: 
     
       1. A broadcast receiving system comprising:
 a tuner for receiving a broadcast signal including a transmission frame,
 wherein a parade of data groups are received during slots within the transmission frame, the slots being basic time periods for multiplexing of mobile data and main data, 
 wherein the data groups of the parade are assigned to the transmission frame, a total number of the data groups assigned to the transmission frame being a multiple of five, 
 wherein a plurality of consecutive data groups in the parade are assigned to be spaced apart from one another within the transmission frame, 
 wherein each of the data groups includes the mobile data, a transmission parameter, known data sequences and a plurality of regions including data blocks, 
 wherein a first region of the plurality of regions includes a fourth data block, a fifth data block, a sixth data block and a seventh data block of the data blocks, 
 wherein a second region of the plurality of regions includes a third data block and an eighth data block of the data blocks, 
 wherein a third region of the plurality of regions includes a second data block and a ninth data block of the data blocks, 
 wherein a fourth region of the plurality of regions includes a first data block and a tenth data block of the data blocks, 
 wherein a first known data sequence of the known data sequences is located in the third data block of the data blocks, 
 wherein a second known data sequence of the known data sequences and a third known data sequence of the known data sequences are located in the fourth data block of the data blocks, 
 wherein a fourth known data sequence of the known data sequences is located in the fifth data block of the data blocks, 
 wherein a fifth known data sequence of the known data sequences is located in the sixth data block of the data blocks, and 
 wherein a sixth known data sequence of the known data sequences is located in the seventh data block of the data blocks; 
   a demodulator for demodulating the broadcast signal;   a transmission parameter detector for detecting the transmission parameter;   a block decoder for symbol-decoding the mobile data included in the received broadcast signal in block units based upon the detected transmission parameter; and   a Reed-Solomon (RS) frame decoder for building two-dimensional RS frames by gathering RS frame portions including the symbol-decoded mobile data,   wherein a size of at least one of the two-dimensional RS frames is (187+P)×(N+2), wherein P and N are integers.   
     
     
       2. The broadcast receiving system of  claim 1 , further comprising:
 a known sequence detector for detecting at least one known data included in the received broadcast signal; and   a channel equalizer for channel-equalizing the received mobile data using the detected at least one known data.   
     
     
       3. The broadcast receiving system of  claim 1 ,
 wherein the RS frame decoder is further for performing cyclic redundancy check (CRC)-decoding and RS-decoding on the symbol-decoded mobile data of the two-dimensional RS frames in order to correct errors.   
     
     
       4. The broadcast receiving system of  claim 1 , further comprising:
 a power controller for controlling power based upon the detected transmission parameter in order to receive one of the data groups including requested mobile data.   
     
     
       5. The broadcast receiving system of  claim 1 , further comprising:
 a derandomizer for derandomizing the symbol-decoded mobile data.   
     
     
       6. A method for processing broadcast signals, the method comprising:
 receiving, at a tuner, a broadcast signal including a transmission frame,
 wherein a parade of data groups are received during slots within the transmission frame, the slots being basic time periods for multiplexing of mobile data and main data, 
 wherein the data groups of the parade are assigned to the transmission frame, a total number of the data groups assigned to the transmission frame being a multiple of five, 
 wherein a plurality of consecutive data groups in the parade are assigned to be spaced apart from one another within the transmission frame, 
 wherein each of the data groups includes the mobile data, a transmission parameter, known data sequences and a plurality of regions including data blocks, 
 wherein a first region of the plurality of regions includes a fourth data block, a fifth data block, a sixth data block and a seventh data block of the data blocks, 
 wherein a second region of the plurality of regions includes a third data block and an eighth data block of the data blocks, 
 wherein a third region of the plurality of regions includes a second data block and a ninth data block of the data blocks, 
 wherein a fourth region of the plurality of regions includes a first data block and a tenth data block of the data blocks, 
 wherein a first known data sequence of the known data sequences is located in the third data block of the data blocks, 
 wherein a second known data sequence of the known data sequences and a third known data sequence of the known data sequences are located in the fourth data block of the data blocks, 
 wherein a fourth known data sequence of the known data sequences is located in the fifth data block of the data blocks, 
 wherein a fifth known data sequence of the known data sequences is located in the sixth data block of the data blocks, and 
 wherein a sixth known data sequence of the known data sequences is located in the seventh data block of the data blocks; 
   demodulating the broadcast signal;   detecting the transmission parameter;   symbol-decoding the mobile data included in the received broadcast signal in block units based upon the detected transmission parameter; and   building two-dimensional RS frames by gathering RS frame portions including the symbol-decoded mobile data,   wherein a size of at least one of the two-dimensional RS frames is (187+P)×(N+2), wherein P and N are integers.   
     
     
       7. The method of  claim 6 , further comprising:
 detecting at least one known data included in the received broadcast signal; and   channel-equalizing the received mobile data using the detected at least one known data.   
     
     
       8. The method of  claim 6 , further comprising:
 performing cyclic redundancy check (CRC)-decoding and Reed-Solomon (RS)-decoding on the symbol-decoded mobile data of the two-dimensional RS frames in order to correct errors.   
     
     
       9. The method of  claim 6 , further comprising:
 controlling power based upon the detected transmission parameter in order to receive one of the data groups including requested mobile data.   
     
     
       10. The method of  claim 6 , further comprising:
 derandomizing the symbol-decoded mobile data.   
     
     
       11. An apparatus for receiving broadcast data, the apparatus comprising:
 a tuner for receiving a broadcast signal carrying a frame,   wherein the frame includes broadcast service data for a service coded at a code rate and signaling information for signaling the broadcast service data,   wherein the frame includes at least one sub-frame that carries the broadcast service data,   wherein the frame further includes known data,   wherein the signaling information includes information related to fast service acquisition and information related to the at least one sub-frame,   wherein the known data have at least two patterns that are pre-determined, and   wherein the signaling information further includes code rate information for identifying the code rate;   a demodulator for demodulating the broadcast service data and the signaling information;   a first decoder for decoding the signaling information; and   a second decoder for decoding the broadcast service data based on the signaling information.   
     
     
       12. A method of receiving broadcast data, the method comprising:
 receiving a broadcast signal carrying a frame,   wherein the frame includes broadcast service data for a service coded at a code rate and signaling information for signaling the broadcast service data, wherein the frame includes at least one sub-frame that carries the broadcast service data,   wherein the frame further includes known data,   wherein the signaling information includes information related to fast service acquisition and information related to the at least one sub-frame,   wherein the known data have at least two patterns that are pre-determined, and   wherein the signaling information further includes code rate information for identifying the code rate;   demodulating the broadcast service data and the signaling information;   decoding the signaling information, and   decoding the broadcast service data based on the signaling information.   
     
     
       13. An apparatus for transmitting broadcast data, the apparatus comprising:
 a first encoder for encoding broadcast service data for a service at a code rate;   a second encoder for encoding signaling information for signaling the broadcast service data;   a frame mapper for arranging the encoded broadcast service data and the encoded signaling information in a frame;   a modulator for modulating data in the frame; and   a transmitter for transmitting the modulated data,   wherein the frame includes at least one sub-frame that carries the broadcast service data,   wherein the frame further includes known data,   wherein the signaling information includes information related to fast service acquisition and information related to the at least one sub-frame,   wherein the known data include at least two patterns that are pre-determined, and   wherein the signaling information further includes code rate information for identifying the code rate.   
     
     
       14. A method of transmitting broadcast data, the method comprising:
 encoding broadcast service data for a service at a code rate;   encoding signaling information for signaling the broadcast service data;   arranging the encoded broadcast service data and the encoded signaling information in a frame;   modulating data in the frame; and   transmitting the modulated data,   wherein the frame includes at least one sub-frame that carries the broadcast service data,   wherein the frame further includes known data,   wherein the signaling information includes information related to fast service acquisition and information related to the at least one sub-frame,   wherein the known data include at least two patterns that are pre-determined, and   wherein the signaling information further includes code rate information for identifying the code rate.