Multiplex communication system and the pseudo-random number sequence using a multiple Gold code

摘要

PPROBLEM TO BE SOLVED: To provide a transmission/reception system extracting desired information with low noise by reducing the cross-correlation between gold codes in the case of inverse spread processing at reception when a plurality of gold codes are used to multiple transmission information and transmitting the multiplexed information in a direct spread system in a spread spectrum communication system. PSOLUTION: A multiple communication system includes: a transmission system for multiplexing digital information items 1 to U by the gold codes 1 to U and transmitting the multiplexed information items; and a reception system for receiving the signals transmitted from the transmission system, using any of the gold codes 1 to U to extract intended digital information among the digital information items 1 to U. The transmission system in the multiple communication system adopting the direct spread system is configured to use the gold codes 1 to U whose cross-correlation values are minimized and prescribed values to apply spread processing to the digital information items 1 to U and transmitting the multiplexed information items. PCOPYRIGHT: (C)2006,JPO&NCIPI