METHOD AND DEVICE FOR GENERATING MULTI-MATCHED FILTER PN VECTOR IN CDMA DEMODULATOR

摘要

PROBLEM TO BE SOLVED: To generate a matched filter vector from a reference PN sequence by acquiring the primary state of the reference PN sequence thereby generating the forward PN sequence of a chip value equivalent to at least one reference PN sequence from the primary state. SOLUTION: A state register 206 stores the reference stateλREF of a local PN code sequence generated by a reference PN generator 202. A fast forward(FF) PN generator 208 loads the reference stateλREF of the register 206 and generates an FF PN sequence. The generator 208 loads the reference state according to an INIT signal supplied by a vector generator controller 220. The length of an offset PN code sequence is fixed depending on a period between continuous INIT signals and the clock velocity of the generator 208.