초록 ▼

The present invention relates to a parallel combinatory CDMA (PC-CDMA) system that transmits and receives data by applying a predetermined pseudo number (PN) code corresponding to a plurality of bits, and more particularly relates to a multi-carrier PC-CDMA system, enhancing its efficiency by mixing

The present invention relates to a parallel combinatory CDMA (PC-CDMA) system that transmits and receives data by applying a predetermined pseudo number (PN) code corresponding to a plurality of bits, and more particularly relates to a multi-carrier PC-CDMA system, enhancing its efficiency by mixing the PN codes corresponding to the plurality of bits with respective orthogonal frequencies. The transmitting part includes a plurality of mixers 33.sub.1 to 33.sub.n for mixing respective PN codes outputted from a plurality of mappers 32.sub.1 to 32.sub.n with frequency signals having an orthogonal feature and a receiving part including a plurality of mixers 41.sub.1 to 41.sub.n for mixing received signals with the same frequency signals mixed at the transmitting part. Accordingly, it is possible to decrease the number of PN codes needed in a PC-CDMA system by correlating the mappers 32.sub.1 to 32.sub.n of the transmitting part and correlator 42.sub.1 to 42.sub.n and data detectors 43.sub.1 to 43.sub.n of the receiving part through the mixers 33 and 41 independently.

대표청구항 ▼

[ What is claimed is:] [1.]1. A multi-carrier PC-CDMA system, having a plurality of mappers for mapping a plurality of data bits into PN codes corresponding to transmitting data values so as to spread the transmitting data values with predetermined PN codes and detecting PN codes from received signa

[ What is claimed is:] [1.]1. A multi-carrier PC-CDMA system, having a plurality of mappers for mapping a plurality of data bits into PN codes corresponding to transmitting data values so as to spread the transmitting data values with predetermined PN codes and detecting PN codes from received signals to restore to original data, comprising;a transmitting part including a plurality of mixers for mixing the respective PN codes outputted from the plurality of mappers with respective frequency signals having orthogonal feature, anda receiving part including a plurality of mixers for mixing received signals with the same frequency signals mixed at the transmitting part and detecting PN codes from the signals outputted from mixers,respective mappers having different configurations from each other so as to generate an intrinsic PN code independently, regardless of PN codes outputted from the other mappers.