Design and Implementation of Convolution Encoder and Viterbi Decoder

Data transmissions over wireless channels are affected by attenuation, distortion, interference and noise, which affect the receiver’s ability to receive correct information. Convolution encoding with Viterbi decoding is a powerful method for forward error correction. Convolution encoders and Viterbi decoders play an important role in digital communication especially, when channel is noisy and introduces errors in transmitted signal. The use of re-transmission methods is not efficient and has large latency measure up to the rising speed and data rates of communication links, the need of new techniques arise here to be compatible with those systems. Convolution encoding with forward error correction Viterbi decoding is designed. Implementation parameters for the decoder have been determined through simulation and the decoder should be implemented on a Xilinx FPGA SPARTAN 3E Kit. Verilog HDL language is used as a