SBIR-STTR Award

Xenotran proposes to develop a forward error correction (FEC) device for use in Ballistic Missile Defense (BMD) systems for ensuring survivable and robust communications between the Battle Management, Command, Control, and Communications (BM/C3) elements and an Exo-Atmospheric Kill Vehicle (EKV) during flight. Communications in this channel is known to be subject to Rayleigh and Ricean fading, intentional jamming and the communications deterring effects of nuclear detonations. Several new algorithms based upon iterative decoding have arisen in recent years that closely approach the Shannon limit for communications capacity and allow unparalleled FEC ability in these adverse channels. Yet, practical implementations of these algorithms are lacking. Anticipated Benefits/Commercial Applications: Xenotran anticipates that development of advanced FEC technologies for heavily faded environments will have large commercial applicability both in military space communications and in commercial Terrestrial 3G systems.

Keywords:
Turbo coding, Rayleigh, Hadamard, SCCC, MAP, Ricean, SuperOrthogonal, PCCC

Xenotran proposes to develop a forward error correction device for use in Ballistic Missile Defense systems for ensuring survivable and robust communications between the Battle Management, Command, Control, and Communications elements and an ExoAtmospheric Kill Vehicle (EKV) during flight. Communications in this channel is known to be subject to Rayleigh and Ricean fading, intentional jamming and the communications deterring effects of nuclear detonations. Several new algorithms based upon iterative decoding have arisen in recent years that closely approach the Shannon limit for communications capacity and allow unparalleled FEC ability in these adverse channels. Use of these algorithms translates into a more reliable communication system and ultimately a more reliable EKV. Xenotran proposes a three phase program to develop and implement an optimized iterative code on a FPGA platform. This codec will be compatible to legacy IFICS equipment. Specifically, the code rate, block size, and data interface will be chosen for compatibility with existing IFICS equipment to ensure the most confidence, the simplest integration, and the least program risk. Xenotran proposes to develop an end-to-end communication link to verify the proper operation of the codec under conditions that simulate as closely as possible those conditions likely encountered by an EKV.

Keywords:
turbo coding iterative low density parity check forward error correction