ORTHOGONAL CODE HOPPING MULTIPLE ACCESS COMMUNICATION SYSTEM AS SPREAD SPECTRUM

摘要

PURPOSE: A transceiver system is provided to be capable of discriminating a channel according to a hopping pattern by assigning the hopping pattern of an orthogonal code stream to each channel. CONSTITUTION: A hopping orthogonal code generator(30) consists of a hopping control part(31) for controlling a hopping pattern of an orthogonal code and an orthogonal code generator(32) for generating an orthogonal code according to a control of the hopping control part(31). A mixer(11) mixes the orthogonal code generated according to the hopping pattern with information data and mixed data is added by an adder(12). A pseudo-random sequence generator(13) generates a pseudo-random sequence, which is multiplied with a signal from the adder(11) through a mixer(14). A modulator(15) modulates the added signal into a radio frequency signal, and a power amplifier(16) amplifies the modulated signal to output the amplified signal to the exterior through an antenna(17).