An Efficient Joint Frame and Physical Layer Signaling Code Detection Method for DVB-S2

Abstract

The Digital Video Broadcasting–Satellite Second Generation (DVB-S2) standard enhances coding and modulation techniques beyond those of DVB-S. It provides a spectrum of coding and modulation options (MODCOD) to suit diverse communication environments. Adaptive coding and modulation (ACM), along with additional signaling in the Physical Layer (PL) Header, are introduced, leading to potential ambiguities in frame synchronization and PL signaling identification for receivers. The straightforward approach is correlating the incoming DVB-S2 signal against all potential PL signaling codes. This process is computationally heavy and becomes impractical with all number of PL signaling codes. Addressing this challenge, this article presents an efficient approach utilizing the fast Walsh-Hadamard transform, significantly simplifying the frame detector’s complexity. Furthermore, the detector facilitates MODCOD detection. The implementation of proposed architecture confirms the method in complexity reduction.

Keywords

• DVB-S2
• frame synchronization
• Fast Walsh Hadamard Transform
• PLS code