DSP-based codecs for convolutional codes

Abstract

Channel coding is a crucial element to any communication system. Convolutional code is currently the most frequently used code, whose performance is very good. It is the most practical way for channel coding too. However, its hardware is complexity, and computation speed has become an obstacle to improvement of communication speed. This article aims at convolutional coding, in particular the decoding algorithm based on the DSP to achieve (2,1,7) convolutional code encoding and decoding process. Experimental results show that the program not only achieve encoding and decoding process, but also greatly improve signal processing speed.