Parity interleaving apparatus for encoding fixed-length signaling information, and parity interleaving method using same
AssigneeElectronics and Telecommunications Research Institute
InventorsSung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim
Life of this patent
Estimating the term…
Abstract
A parity interleaving apparatus and method for fixed length signaling information are disclosed. A parity interleaving apparatus according to an embodiment of the present invention includes a processor configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of groups, and group-wise interleaving the groups using an order of group-wise interleaving; and memory configured to provide the parity bit string for parity puncturing to a parity puncturing unit.
Claims6
A signaling information receiving apparatus, comprising:
- an antenna configured to receive a transmitted signal, the transmitted signal transmitted over a physical channel;
- a demodulator configured to perform quadrature phase shift keying (QPSK) demodulation before generating restored parity values corresponding to the transmitted signal;
- memory configured to store the restored parity values;
- and
- a processor configured to generate deinterleaved parity values corresponding to parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15 by segmenting the restored parity values into a plurality of groups and group-wise de-interleaving the groups, the group-wise de-interleaving corresponding to a reverse process of group-wise interleaving according to an order of the group-wise interleaving,
- wherein the order of the group-wise interleaving corresponds to a sequence [20 23 25 32 38 41 18 9 10 11 31 24 14 15 26 40 33 19 28 34 16 39 27 30 21 44 43 35 42 36 12 13 29 22 37 17].
A signaling information receiving method, comprising:
- receiving a transmitted signal, the transmitted signal transmitted over a physical channel;
- performing quadrature phase shift keying (QPSK) demodulation before generating restored parity values corresponding to the transmitted signal;
- storing the restored parity values;
- and
- generating deinterleaved parity values corresponding to parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15 by segmenting the restored parity values into a plurality of groups and group-wise de-interleaving the groups, the group-wise de-interleaving corresponding to a reverse process of group-wise interleaving according to an order of the group-wise interleaving,
- wherein the order of the group-wise interleaving corresponds to a sequence [20 23 25 38 41 18 9 10 11 31 24 14 15 26 40 33 19 28 34 16 39 27 30 21 44 43 35 42 36 12 13 29 22 37 17].
Dependencies are inferred from the claim text.