| 摘要 |
<p>PURPOSE:To provide a spread spectrum communication system capable of simplifying circuit configuration in spread spectrum communication using frequency hopping. CONSTITUTION:Data generated at the data generating part 1 of a transmitter are modulated by a carrier generated at a carrier generator 4 by a modulator 3, and either the output of the modulator 3 or the carrier from the carrier generator 4 is delayed by a delay element 5, and they are multiplexed by a multiplexer 6, and a multiplexed signal is frequency-converted by a frequency conversion part 7, and is transmitted from an antenna 8. A signal is received by an antenna 11 in a receiver, and it is frequency-converted by a frequency conversion part 12, thereafter it is distributed to two signals by a demultiplexer 13, and either of distributed signals is delayed by a delay element 14, and a signal on the other side is multiplied by a delayed signal by a multiplier 17, and only a required band is taken out by a filter 18, and it is demodulated by a data demodulation part 19. Thereby, it is possible to perform the inverse spread of the frequency hopping with remarkably simple constitution.</p> |
