Patent ID: 8259591

Claim:
A method for receiving a signal in a signal reception apparatus of a communication system, the method comprising: receiving a specified number, d c , of input messages at a check node operator, wherein d c is a finite number; and generating d c output messages by, for each output message: inputting a corresponding one of the input messages to an input unit of the check node operator, inputting each of a remaining set of d c −1 input messages to a corresponding delay node of the check node operator, comparing magnitudes of the remaining set of input messages input to the delay nodes with comparators of the check node operator, outputting from the comparators the output message, wherein the output message comprises a minimum magnitude of the remaining set of input messages, and cyclic-shifting the input messages being input to the input unit and to the delay nodes with a controller according to a control signal to generate a subsequent output message until d c output messages are generated.