SPREAD SPECTRUM TRANSMISSION APPARATUS, SPREAD SPECTRUM RECEPTION APPARATUS, AND SPREAD SPECTRUM COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To enable high speed data communication using a single series of pseudo noise codes per user while avoiding too a large circuit scale, and also to enable a good bit error rate characteristic even when the received signal is amplified nonlinearly.;SOLUTION: The system includes a chip clock generator 102 for outputting a chip clock in one frame of (M+L-1) ships, a frame clock generator 103 for outputting a frame clock synchronized with the timing of the frame generation, SS-PPM signal generators 104-1 to 104-N for inserting a series of pseudo noise codes corresponding one period from any of M chips at the frame head based on K bits of transmission data according to the frame clock to generate SS-PPM signals, delays 105-1 to 105-N for delaying N SS-PPM signals by a determined delay amount, and a multiplexer 106 for adding all outputs of the delays together to generate a multiplexed SSS-PPM signal.;COPYRIGHT: (C)2003,JPO