Generic Open Source Viterbi Decoder

Overview

Convolutional codes are widely adopted in wireless communication systems for forward error correction. Creonic offers you a certified open source Viterbi decoder IP core with AXI4-Stream interface that is capable of decoding most of the convolutional codes as defined by various standards.

Key Features

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

Benefits

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 AMD Xilinx Virtex-6 FPGA (Speedgrade 1)
VHDL source code available under GPL license (hosted at opencores.org)
Certified by OpenCores
Commercial support and licenses available

Block Diagram

Applications

Mobile Communications
Digital Video Broadcasting
Digital Audio Broadcasting
Satellite Modems
Satellite Phones
Trunked Radio Systems
Microwave Links
Ultra-wideband (UWB)
Wireless Personal Area Networks (WPAN)
Wireless Local Area Networks (WLAN)
and many more.

Deliverables

VHDL source code, VHDL testbench, documentation.

Technical Specifications

Availability

Now

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