Patent ID: 6766337
Filing Date: 2004-07-20
Classification: H03K,H04B,H04J

Abstract:
A device for generating a spreading code in a CDMA (Code Division Multiple Access) communication system, comprising:a sequence generator for generating a sequence according to a generator polynomial of a sequence having a length 2Sâˆ’1, and a given initial value, and reloading the initial value whenever a sequence having a length shorter than the length 2Sâˆ’1 is generated, to repeatedly perform an operation of generating the sequence, where S is a positive number; a mask selector including first and second masks having a given offset, for selecting the first mask in a sequence period and selecting the second mask in another sequence period; and an adder for modulo-2 adding an output of the sequence generator and an output of the mask selector to generate the spreading code, and truncating the sequence upon receipt of the second mask.