libfec

Several forward error correction (FEC) decoders

This library package provides several forward error correction (FEC) decoders and accelerated primitives useful in digital signal processing (DSP). Except for the Reed-Solomon codecs, these functions take full advantage of the MMX, SSE and SSE2 SIMD instruction sets on Intel/AMD IA-32 processors and the Altivec/VMX/Velocity Engine SIMD instruction set on the G4 and G5 PowerPC. The library includes Viterbi decoders for the following convolutional codes: rate 1/2 k=7 rate 1/2 k=9 rate 1/6 k=15 ("Cassini") plus two Reed-Solomon encoder-decoders: one optimized for the (255,223) CCSDS standard code a general purpose encoder/decoder for arbitrary RS codes and three low-level 16-bit DSP support routines: signed dot product peak detection sum-of-squares (energy) computation This library is licensed under the "lesser" GNU General Public License.