OFDM-DS-CDMA COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To reduce deterioration in an error rate characteristics of an OFDM- DS-CDMA communication system. SOLUTION: Adder sections 102a1, 102am multiplex k/2-sets of spread information signals to generate a multiplexed signal. The adder sections 102a1-102am-1 multiplex k-sets of spread information signals to generate a multiplexed signal. An IFFT section 103 assigns the multiplex signal from the adder section 102a1 to a subcarrier 1 whose characteristics is deteriorated and the multiplex signal from the adder section 102am to a subcarrier m whose characteristics is deteriorated respectively and assigns the multiplex signal from the adder sections 102a1-102am-1 to subcarriers 2-m-1 with excellent characteristics respectively to conduct frequency division multiplexing.