RADIO RELAY TRANSMITTER, RADIO RELAY SYSTEM, SUB CARRIER FORMING METHOD IN RADIO RELAY TRANSMITTER, AND SUB CARRIER FORMING PROGRAM PACKAGED IN RADIO RELAY TRANSMITTER

摘要

PROBLEM TO BE SOLVED: To prevent a received signal level of a TMCC carrier from being reduced in radio relay.;SOLUTION: In a plurality of systems, a TS signal is inputted to a coding part, error correction coding is performed thereon and an information signal is generated S101. Mapping S102 is then performed on IQ data by a mapping part. For a TMCC signal generated S103 by a TMCC modulation part, thinning of odd-numbered sub carriers is performed by an OFDM symbol constitution part in the order from a lowest frequency in accordance with control of a carrier control part. In the other system, symbol constitution S104 is performed by thinning even-numbered sub carriers in an order from the lowest frequency among sub carriers forming a TMCC carrier. Processing of inverse Fourier transformation is collectively performed on the sub carriers by an IFFT part, an OFDM signal is generated S105, a guard interval is added S106 thereto, and the OFDM signal is converted S107 into an analog signal and transmitted S109 in a predetermined frequency.;COPYRIGHT: (C)2016,JPO&INPIT