Switchable-Rate Error Control Coding for HF-IP Systems

Kariyawasam Katukolihe Ga, Sharadha and Momahed Heravi, Behzad and Honary, Bahram and Vongas, G. (2009) Switchable-Rate Error Control Coding for HF-IP Systems. In: Ionospheric radio Systems and Techniques, 2009. (IRST 2009). The Institution of Engineering and Technology 11th International Conference on. IET Press, Edinburgh, 132–136. ISBN 978-1-84919-123-4

Abstract

This paper provides analysis of high performance forward error control (FEC) coding scheme suitable for next generation HF-IP systems, which can be used as an optional scheme according to the requirements of the application. Present HF-IP systems comply with NATO STANAG 4539 Physical layer standards which use convolutional encoding for forward error protection and correction. The FEC that has been proposed in this paper is a class of quasi cyclic Low Density Parity Check (LDPC) coding scheme suitable for HFIP systems. Additive groups of Finite Fields have been used to construct short-length structured LDPC codes with 4 different rates suitable for different HF channel conditions. The codes have been simulated with ITU-R F1487 HF channel model [1] for performance analysis with different conditions and latitudes.