Apparatus and method for transmitting signal in digital video broadcasting system

A method for bit-interleaving coded bits for incremental redundancy (IR) transmission in a transmission apparatus of a digital video broadcasting system, the method comprising:

• writing the coded bits in a memory area having a predetermined size;
• partitioning a predetermined number of columns defining the memory area into an arbitrary number of column partitions, and arbitrarily arranging column partition indexes which are assigned to column partitions determined by the partitioning, to thereby set a reading order;
• selecting a reading target column in the same order as a writing order for columns constituting a column partition of a specific column partition index that is selected in the reading order;
• and
• outputting the selected reading target column written in the memory area into one coded bit stream interleaved for normal transmission and at least one coded bit stream interleaved for at least one IR transmission,
• wherein the reading order is differently set for each of the normal transmission and at least one IR transmission.

An apparatus for bit-interleaving coded bits for incremental redundancy (IR) transmission in a digital video broadcasting system, the apparatus comprising:

• an interleaver configured to:
• write the coded bits in a memory area having a predetermined size,
• partition a predetermined number of rows defining the memory area into an arbitrary number of row partitions and arbitrarily arrange row partition indexes which are assigned to row partitions determined by the partitioning to thereby set the reading order,
• select a reading target row in the same order as a writing order for rows constituting a row partition of a specific row partition index that is selected in the reading order, and output the selected reading target row written in the memory area into one coded bit stream interleaved for the normal transmission and at least one coded bit stream interleaved for at least one IR transmission,
• wherein the reading order is differently set for each of the normal transmission and at least one IR transmission;
• and
• a modulator configured to modulate the coded bits interleaved by the interleaver.

An apparatus for bit-interleaving coded bits for incremental redundancy (IR) transmission in a digital video broadcasting system, the apparatus comprising:

• an interleaver configured to:
• write the coded bits in a memory area having a predetermined size,
• partition a predetermined number of columns defining the memory area into an arbitrary number of column partitions and arbitrarily arrange column partition indexes which are assigned to column partitions determined by the partitioning to thereby set the reading order,
• select a reading target column in the same order as a writing order for columns constituting a row partition of a specific column partition index that is selected in the reading order, and
• output the selected reading target column written in the memory area into one coded bit stream interleaved for the normal transmission and at least one coded bit stream interleaved for at least one IR transmission,
• wherein the reading order is differently set for each of the normal transmission and at least one IR transmission;
• and
• a modulator configured to modulate the coded bits interleaved by the interleaver.

An apparatus for generating data in a digital video broadcasting system, the apparatus comprising:

• an encoder configured to encode input data;
• an interleaver configured to interleave bits encoded by the encoder;
• and
• a modulator configured to modulate coded bits interleaved by the interleaver,
• wherein the interleaver includes:
• a memory including a writing area having a predetermined number of columns and a predetermined number of rows;
• and
• a controller configured to:
• write the coded bits in the memory based on a writing order that is defined by a column index corresponding to the predetermined number of columns and a row index corresponding to the predetermined number of rows, and
• output coded bits written in the memory in a reading order that is assigned to each column or row partition determined by partitioning the columns or the rows considering a read direction of coded bits written in the memory, and
• wherein the controller is configured to select a reading target row in the same order as a writing order for rows constituting a row partition of a specific row partition index that is selected in the reading order.