REPETITIVE TRANSMISSION SIGNAL SYNTHESIS CIRCUIT AND SYMBOL SYNTHESIZER

PROBLEM TO BE SOLVED: To provide a repetitive transmission signal synthesis circuit and the symbol synthesis device in which the circuit configuration returning repetitively transmitted data to data series before repetitive transmission is simplified. SOLUTION: The circuit is provided with a plurality of demodulation circuits 13-1, 13-2 separating a delay wave from a signal coming through a multi-path propagation line and demodulating the signal, a symbol selection section that receives a symbol number of the signal sent repetitively and a predetermined number of repetition, decides the synthesized symbol from a received symbol, and outputs the synthesis information, and a symbol adder section that receives the repetitively sent signal and the synthesis information outputted from the symbol selection section and adds the repetitively sent signals and provides an output of the sum based on the synthesis information, a plurality of repetitive transmission signal synthesis circuits 14-1, 14-2 provided corresponding to the output of each demodulation circuit respectively and a symbol synthesis circuit 15 synthesizes by matching phases of outputs of a plurality of the repetitive transmission signal synthesis circuits and provides an output.