Title High-Rate High-Speed Forward Error Correction Architectures for Aeronautical Telemetry
Funded by T&E/S&T Program, U.S. Army
Period of Performance May 2009 - Aug 2011
Investigators Erik Perrins (PI), Andrew Gill (Co-PI)
Amount $799,267

Abstract

Modern forward error correcting (FEC) codes with high-performance iterative decoders are of tremendous interest in the wireless communications research community. On the practical side, these codes have already been adopted in many wireless communication standards and are under consideration in numerous future standards. The widespread use of these codes places tremendous importance on decoder design and implementation. The goal of this research is to develop hardware FEC decoders that are efficient in their use of hardware resources and implementation effort. While our approach is quite general and is widely applicable, we focus on low density parity check (LDPC) codes and serially concatenated convolutional codes (SCCC) as design examples.

Use of Functional Programming

On this project, we used Kansas Lava to generate efficient forward error correcting codes. From a research point of view, we were attempting to to answer the following questions:

  • Can we use use functional programming to complement and support the current development module of using MATLAB for a reference, and VHDL for an implementation.
  • Can we build a functional program that mitigates against the need to perform frequent refactorings when working in VHDL, as a suitable architecture is discovered.
  • Can we gain a stronger assurance of the relationship between the specification and implementation?
  • What are the weaknesses of using a system like Lava to implement a FEC, and what are the remaining research problems with using EDSLs as an architecture bridge.

Relevent Publications

  • A. Gill, T. Bull, G. Kimmell, E. Perrins, E. Komp, and B. Werling, “Introducing Kansas Lava,” in Proceedings of the Symposium on Implementation and Application of Functional Languages, ser. LNCS, vol. 6041. Springer-Verlag, Sep 2009.