| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a spread spectrum communication system that cannot be wiretapped easily. SOLUTION: The spread spectrum communication system for spreading signals through a frequency band broader than a frequency band width required for data transmission to transmit transmission data 1 is configured to comprise an information modulator 2 for modulating the transmission data with information, a DS (Direct Spread) pattern generator 4 that generates a DS spread pattern according to a clock generated from the clock generator 3, a DS pattern variable circuit 7 that controls the DS pattern generator 4 to change the DS spread pattern for both the transmitter side and the receiver side at the same time, and a DS spread modulator 5 that generates a DS modulation wave 6 on the basis of the transmission data 1 modulated with the information by the information modulator 2 and the DS spread pattern.</p> |
