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.

翻译：在本文中,我们讨论了不同长度物理层页码解码问题,我们以DVB-S2X标准为案例研究,在选择了适合的、代码长度可变的PLH代码后,我们提出了两种不连贯的解码战略,拟议的解码战略可以估计接收方不知道的传输的PLH字段的长度,同时解码了PLH代码。 我们证明,由于在标准固定长度的PLH方面传输了PLH字段,因此可以实现良好的解码功能,同时大大减少间接费用。