Decoding of Variable Length PLH Codes

TL;DR

This paper introduces two noncoherent decoding strategies for variable length PLH codes in DVB-S2X, enabling joint estimation of code length and decoding with reduced overhead and high performance.

Contribution

It proposes novel noncoherent decoding methods for variable length PLH codes, improving efficiency and performance over standard fixed-length approaches.

Findings

Achieves high decoding accuracy for variable length PLH codes.

Reduces overhead compared to fixed-length PLH decoding.

Demonstrates effectiveness in DVB-S2X standard context.

Abstract

In this paper, we address the problem of the decoding of variable length physical layer header (PLH) codes. We take as a case study the DVB-S2X standard, and, after selecting a suitable PLH code with variable codeword length, we propose two alternative noncoherent decoding strategies. The proposed decoding strategies allow to estimate the length of the transmitted PLH field, which is unknown at the receiver, jointly with the decoding of the PLH code. We demonstrate that it is possible to achieve an excellent decoding performance while significantly reducing the overhead due to the transmission of the PLH field with respect to a standard fixed-length PLH.