Convolutional codes are widely adopted in wireless communication systems for forward error correction. Creonic offers you a certified open source Viterbi decoder with AXI4-Stream interface that is capable of decoding most of the convolutional codes as defined by various standards.
Digital Video Broadcasting
Digital Audio Broadcasting
Trunked Radio Systems
Wireless Personal Area Networks (WPAN)
Wireless Local Area Networks (WLAN)
and many more.
Features the Core Supports
Design-time configuration of encoder polynomials (different number of states and different code rates).
Support for recursive and non-recursive convolutional codes.
Windowing technique for reduced latency and memory requirements (with acquisition).
Design-time configuration of quantization, maximum window size, RAM usage (distributed RAM vs. Block RAM).
Run-time configuration of block length.
Run-time configuration of window length and acquisition length.
Block-to-block on-the-fly configuration.
Configurable for most standards that apply convolutional codes (GSM, UMTS, CDMA, CDMA2000, WiMAX, WiFi, DAB, DVB, GMR, WiMedia …).
Pipelined design for high payload throughputs (about 1 bit per clock cycle).
AXI4-Stream interface for simple integration.
Up to 250 MHz on Xilinx Virtex-6 FPGA (Speedgrade 1).
VHDL source code available under GPL license (hosted at opencores.org).