Design and Implementation of Byte Wise Fashion Concatenated Encoder for DVB Systems

We presented a concatenated encoder design which is used for all digital video broadcast (DVB) applications, no matter what the media of transfer is. It is composed of a scrambler, Reed-Solomon encoder, convolutional interleaver, and punctured convolutional encoder. Two novel architectures are provided for the scrambler and punctured convolutional encoder units to operate in a byte wise fashion. Thus any need for bit serial to parallel and parallel to bit serial module has been eliminated. Furthermore the minimum performance requirement of the concatenated encoder has been reduced by factor of eight. The power consumption of the byte wise fashion implementation compared to that of the standard implementation has also been reduced. For verification purposes the proposed design was implemented in FPGA and embedded in a DVB-terrestrial (DVB-T) modulator