Abstract
For the advantage of system flexibility, we choice the Long Code Sequences CPSK system as the research subject. We will propose a new system architecture to improve the system performance. The main idea of the system architecture is to establish the Inter-Symbol Code-Phase Correlation (ISCPC) between the transmitted Symbols. The receiver can get better system performance by the information. Next, we will observe the code-phase translation between different symbols from another angle. By that, we will use the state machine to describe the code-phase translation and use Viterbi algorithm to design the receiver and the widowing technology will be used to reduce the system complexity.