| 摘要 |
PROBLEM TO BE SOLVED: To provide a CDMA system and a demodulation system which are simple in structure and high in performance by using channel estimation that takes advantage of pilot channels as to the demodulation system in spread spectrum communication that keeps data communication in a fading environment or a CDMA system. SOLUTION: Channel estimation used for compensating information symbols is made by taking advantage of the pilot symbols of the pilot channels located just before they overlap temporally with information signal symbols that make channel estimation in this CDMA receiving system, in a CDMA system composed of a transmitter which transmits pilot channels and information channels as CDMA transmission signals and a receiver which receives the CDMA signals and demodulates them. |
