CIRCUIT AND METHOD FOR GENERATING M SEQUENCE AND CIRCUIT FOR GENERATING PN SEQUENCE

摘要

PROBLEM TO BE SOLVED: To provide an M sequence generating circuit for quickly calculating a register state when an arbitrary phase is shifted without increasing memory amounts by applying a mask pattern from a phase calculating means to an M sequence from an M sequence generating means, and outputting an M sequence in which an arbitrary phase is shifted. SOLUTION: A mask table 101 stores each mask value for obtaining the state of each register at the time of shifting an arbitrary phase as table data. A mask selecting part (phase calculating part) 102 selects a mask pattern corresponding to a phase from the mask table 101 based on inputted phase information, and outputs it to a mask part 104. A normal reference M sequence is outputted from an M sequence generating part 103, and an M sequence for generating the delayed M sequence is outputted to the mask part 104. The mask part 104 applies the mask pattern from the mask selecting part 102 to the M sequence from the M sequence generating part 103, and outputs the M sequence in which an arbitrary phase is shifted.