SBIR-STTR Award

The objective of the phase I work presented in this proposal is to generate a performance and functional specification and block diagram design of a single vlsi chip implementing the audio tone encoder and decoder functions of a digital modem. The tone encoder/decoder chip, when combined with an off-the-shelf ad/converter, will provide a complete two-chip implementation of the digital modem required by the new government mandated automatic link establishment ("ALE") protocol. The protocol is specified in both MIL-STD-188-141A and FED-STD-1045. The ale protocol is required in all government (military and government agency) MF and HF radios incorporating an ale capability to improve radio interoperability.

Keywords:

The objectives of the Phase II work is to implement prototypes of several standard, off-the-shelf components for embedded and stand-alone ALE controller implementations. The first standard component proposed is the implementation of the tone encoder/decoder ASIC studied and described in the Phase I report. In addition, a standard board level component implementing the complete FEC front-end functions and a board level component implementing the complete ALE protocol function are proposed. The tone encoder/ decoder ASIC will be implemented first followed by the ALE front-end board and the ALE controller board. The software for the ALE controller board will be written in the DoD and Government- mandated Ada programming language.

Keywords:
Ada Modem Tone Filter Fed-Std-1045 Mil-Std-188-141a Asic Ale Interoperability