SPREAD CODE GENERATION METHOD, CDMA TRANSMISSION DEVICE, AND CDMA RECEPTION DEVICE

摘要

e j (2n /N) calculating section 101 generates a bth chip C (a, b) of an ath spreading code based on C (a, b) =e j(2n /N) where e is a base of natural logarithm and N is a length of the spreading code (i.e. spreading code length). It is assumed in the above equation that n=a×b, a=0~N-1, and b=0~N-1. It is thereby possible to generate orthogonal spreading codes with arbitrary lengths.