An Effective M-ary Spread Spectrum Communication Scheme
Yuexuan Liu, Xiaohui Li, Peng Gao, Hongdong Li, Rui Dong · Advances in intelligent systems research/Advances in Intelligent Systems Research · 2014
A new M-ary spread spectrum(SS) hybrid communication system is proposed.The system adopts two orthogonal branches to transport information.In each branch, double M-ary biorthogonal spread spectrum modulation is adopted at first, then every SS code is treated as original code to adopt CPSK modulation, and the unattached PN code is chosen to achieve system synchronization.The proposed scheme is easy to achieve synchronization, and is effective in improving the bandwidth efficiency and anti-intercept capability.Computer simulation show the validity of the proposed scheme under additional white gauss noise channel models.