Design of convolution encoder using quantum dot cellular automata

摘要

Convolution code is a channel coding technique for error free transmission. Convolution coding is executed by taking definite input bits, where the bits are stored in the fixed number of shift registers and the operations are equivalent to convolution of two bits with modulo 2 adders. In this encoding process, the messages are generated by sliding the Boolean functions to the input data stream. For generation of convolution code, the information or the message is passed through n bit linear finite state shift register. Quantum-dot cellular automata (QCA), having minute size, very fast switching speed is used for the design of convolution encoder circuit for quick response to the inputs. The QCA cell registers are utilised here by arranging themselves in linear fashion to get the convolution code of the input message bits stream.