Apparatus and method for receiving signal in a communication system

A method for receiving a signal in a signal reception apparatus in a communication system, the method comprising:

• receiving a signal;
• and
• decoding the received signal by setting an offset for each block row of a parity check matrix of a Low Density Parity Check (LDPC) code, the offset indicating a start position of a node operation and scheduling an order of performing the node operation on a Partial Parallel Scheduling (PPS) group basis,
• wherein the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one row from each of the p block rows.

A method for receiving a signal in a signal reception apparatus in a communication system, the method comprising:

• setting an offset for each block column of a parity check matrix of a Low Density Parity Check (LDPC) code, the offset indicating a start position of a bit node operation, and performing a bit node operation on a received signal on a Partial Parallel Scheduling (PPS) group basis;
• and
• performing a check node operation on all check nodes connected to each of bit nodes for which the bit node operation has been performed,
• wherein the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one column from each of the q block columns.

A method for receiving a signal in a signal reception apparatus in a communication system, the method comprising:

• setting an offset for each block row of a parity check matrix of a Low Density Parity Check (LDPC) code, the offset indicating a start position of a check node operation, and performing a check node operation on a received signal on a Partial Parallel Scheduling (PPS) group basis;
• and
• performing a bit node operation on all bit nodes connected to each of check nodes for which the check node operation has been performed,
• wherein the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one row from each of the p block rows.

A signal reception apparatus in a communication system, comprising:

• q bit node updaters for setting an offset for each block column of a parity check matrix of a Low Density Parity Check (LDPC) code, the offset indicating a start position of a bit node operation, and performing a bit node operation on a received signal on a Partial Parallel Scheduling (PPS) group basis;
• and
• q×Dv check node updaters for performing a check node operation on all check nodes connected to each of bit nodes for which the bit node operation has been performed,
• wherein the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one column from each of the q block columns.

A signal reception apparatus in a communication system, comprising:

• q×Dv check node updaters for setting an offset for each block row of a parity check matrix of a Low Density Parity Check (LDPC) code, the offset indicating a start position of a check node operation, and performing a check node operation on a received signal on a Partial Parallel Scheduling (PPS) group basis;
• and
• q bit node updaters for performing a bit node operation on all bit nodes connected to each of check nodes for which the check node operation has been performed,
• wherein the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one row from each of the p block rows.