| US 7,581,157 B2 | ||
| Method and apparatus of encoding and decoding data using low density parity check code in a wireless communication system | ||
| Min Seok Oh, Seoul (Korea, Republic of); Ki Hyoung Cho, Anyang-si (Korea, Republic of); and Kyu Hyuk Chung, Seoul (Korea, Republic of) | ||
| Assigned to LG Electronics Inc., Seoul (Korea, Republic of) | ||
| Filed on Jun. 23, 2005, as Appl. No. 11/166,476. | ||
| Claims priority of application No. 10-2004-0047898 (KR), filed on Jun. 24, 2004; application No. 10-2004-0048454 (KR), filed on Jun. 25, 2004; application No. 10-2004-0085512 (KR), filed on Oct. 25, 2004; application No. 10-2004-0087361 (KR), filed on Oct. 29, 2004; application No. 10-2004-0087938 (KR), filed on Nov. 01, 2004; application No. 10-2004-0088807 (KR), filed on Nov. 03, 2004; application No. 10-2004-0109624 (KR), filed on Dec. 21, 2004; application No. 10-2004-0110678 (KR), filed on Dec. 22, 2004; application No. 10-2004-0111525 (KR), filed on Dec. 23, 2004; application No. 10-2004-0117136 (KR), filed on Dec. 30, 2004; application No. 10-2005-0000046 (KR), filed on Jan. 03, 2005; application No. 10-2005-0000244 (KR), filed on Jan. 03, 2005; and application No. 10-2005-0003296 (KR), filed on Jan. 13, 2005. | ||
| Prior Publication US 2005/0289437 A1, Dec. 29, 2005 | ||
| Int. Cl. H03M 13/00 (2006.01) | ||
| U.S. Cl. 714—781 | 7 Claims |
| 1. A method of encoding data using low density parity check (LDPC) code, the method comprising:
providing a first base matrix including a first value as each element of the first base matrix, the first value an integer
that indicates either a zero matrix or a first permutation matrix having a zmax×zmax size;
generating a second base matrix by replacing each first value corresponding to each element of the first base matrix with
a second value corresponding to each element of the second base matrix, the second value an integer that indicates either
a zero matrix or a second permutation matrix having a z×z size;
generating a parity check matrix by expanding the second base matrix by replacing each second value with the corresponding
second permutation matrix or the zero matrix having a z×z size; and
using the parity check matrix to encode data for transmission,
wherein zmax is greater than z and each second value is determined based on z, zmax, and each corresponding first value.
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