SYNCHRONOUS DETECTION METHOD USING PILOT SYMBOL AND TENTATIVE DECISION DATA SYMBOL, MOBILE OBJECT COMMUNICATION RECEIVER AND INTERFERENCE ELIMINATION DEVICE

摘要

PROBLEM TO BE SOLVED: To improve estimation precision of propagation path transfer characteristics with regard to a synchronous detection method using a pilot symbol and a tentative decision data symbol and a mobile object transfer receiver and an interference elimination device. SOLUTION: This device estimates propagation path transfer characteristics and executes a synchronous detection by considering a tentative decision data symbol to be a pilot symbol by means of the first propagation path transfer characteristics estimation circuit 3 for estimating propagation path transfer characteristics by using the pilot symbol interpolated in a data frame at regular intervals, a tentative decision circuit 6 for making a tentative decision of a reception data symbol on the basis of the first estimated propagation path transfer characteristics by the first propagation path characteristics estimation circuit 3, the second propagation path transfer characteristics estimation circuit 7 for estimating the propagation path characteristics by using the tentative decision data symbol and the pilot symbol by the tentative decision circuit 6, and a final decision circuit 11 for deciding the reception data symbol on the basis of the second estimated propagation path transfer characteristics by the second propagation path transfer characteristics estimation circuit 7.