A novel Position Code Parallel Combinatory Spread Spectrum communication system

This paper presents a novel Position Code Parallel Combinatory Spread Spectrum (PC/PC/SS) communication system. PC/PC/SS system can be designed to have higher data transmission capability, even several times compared to ordinary PC/SS system on Gaussian channel. In the ordinary PC/SS system, multip1e pseudo-noise (PN) sequences are simultaneously transmitted out of a pre-assigned spreading sequence set. In the proposed system, modulation of Position Code is applied to the starting position of each simultaneously transmitting PN sequences. The symbol error rate and average bit error rate are analyzed to evaluate the performance of the proposed systems. Furthermore, PC/PC/SS system has excellent secret property than PC/SS and M-ary/SS communication systems.