FREQUENCY DIVERSITY RADIO COMMUNICATION METHOD, FREQUENCY DIVERSITY RADIO TRANSMITTER AND FREQUENCY DIVERSITY RATIO RECEIVER, AND FREQUENCY DIVERSITY RADIO COMMUNICATION EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To conduct frequency diversity radio communication economically with a high frequency utilizing efficiency. ;SOLUTION: A data modulation section 2 at a transmitter side modulates a main transmission carrier f. from a carrier oscillator 3 and its harmonics f₂(=2f₁) by an external modulation signal and the modulated signal is sent from a transmission antenna 7 via a frequency conversion section 4 and a high frequency section 6. Any modulated wave with stronger reception power among received modulation waves is selected properly at the receiver side and demodulated to increase the frequency utility efficiency and the original transmission data are reproduced economically.;COPYRIGHT: (C)1997,JPO