An Efficient Method of Spread-Spectrum Logon for Satellite Terminal in DVB Systems

Abstract

In the satellite communication system, the antenna of the portable mobile terminal has a small aperture, and there is a risk of frequent online and offline in the case of movement and the logon process is cumbersome. Therefore, a CRMA-based spreadspectrum logon scheme is proposed. The structure of frame and superframe is designed, and the algorithm of modulation and demodulation is simulated and implemented, which is able to meet the requirement of application for mobile satellite communication terminal.