Transmitter apparatus and bit interleaving method thereof
First Claim
1. An interleaving method comprising:
- generating a codeword comprising information bits and parity bits, wherein the parity bits are generated based on a low density parity check (LDPC) code according to a code rate of 5/15 and a code length of 16200;
splitting the codeword into a plurality of bit groups;
interleaving the plurality of bit groups to provide an interleaved codeword;
mapping the interleaved codeword onto constellation points for 16-quadrature amplitude modulation (QAM); and
transmitting, using a transmitter, a signal carrying the constellation points,wherein the interleaving the plurality of bit groups is based on a following equation;
Yj=Xπ
(j)for(0≦
j<
Ngroup),where Xj is a jth bit group among the plurality of bit groups, Yj is a jth bit group among the interleaved plurality of bit groups, Ngroup is a total number of the plurality of bit groups, and π
(j) denotes a permutation order for the interleaving, andwherein the π
(j) is defined as follows;
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Abstract
A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to generate a low-density parity check (LDPC) codeword by LDPC encoding of input bits based on a parity check matrix including information word bits and parity bits, the LDPC codeword including a plurality of bit groups each including a plurality of bits; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the interleaver is further configured to interleave the LDPC codeword such that a bit included in a predetermined bit group from among the plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.
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4 Claims
-
1. An interleaving method comprising:
-
generating a codeword comprising information bits and parity bits, wherein the parity bits are generated based on a low density parity check (LDPC) code according to a code rate of 5/15 and a code length of 16200; splitting the codeword into a plurality of bit groups; interleaving the plurality of bit groups to provide an interleaved codeword; mapping the interleaved codeword onto constellation points for 16-quadrature amplitude modulation (QAM); and transmitting, using a transmitter, a signal carrying the constellation points, wherein the interleaving the plurality of bit groups is based on a following equation;
Yj=Xπ
(j)for(0≦
j<
Ngroup),where Xj is a jth bit group among the plurality of bit groups, Yj is a jth bit group among the interleaved plurality of bit groups, Ngroup is a total number of the plurality of bit groups, and π
(j) denotes a permutation order for the interleaving, andwherein the π
(j) is defined as follows; - View Dependent Claims (2, 3, 4)
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Specification