Abstract: A spread spectrum radio frequency communication system includes a Forward Error Correction (FEC) algorithm to encode digital data to provide a plurality of symbol groups, the FEC algorithm using a Reed Solomon FEC code, an interleaving algorithm to map each one of the plurality of symbol groups into a corresponding one of a plurality of coherent subbands, and a Walsh encoder to encode each one of the plurality of symbol groups.

Abstract: A method and apparatus for enhancing the resolution of an analog-to-digital converter. The method uses the addition of a second analog waveform to a first analog signal which is to be converted. When the composite signal is converted to digital form, this enhances the effective resolution of the A/D converter with respect to the first signal. Integration of the composite digital signal causes the effects of the second waveform to average to zero. The result is an enhanced resolution signal without undesired effects of the added second signal.