BER Performance of Position Code Parallel Combinatory Spread Spectrum System

A novel Position Code Parallel Combinatory Spread Spectrum (PC/PC/SS) communication system is proposed in this paper. 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 proposed system, modulation of position code is applied to each simultaneously transmitting PN sequences. The symbol error rate and average bit error rate performances 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 systems.