Implementation of Convolutional Encoder in Quantum-Dot Cellular Automata
Ming Liang Zhang, Li Cai, Xiao Yang, Huan Qing Cui, Zhi Chun Wang · Key engineering materials · 2015
As a nanoelectronic system, Quantum-dot cellular automata (QCA) is very likely to present high defect and fault rates. Therefore making QCA bits distortion-free is a necessary work. In this paper, we present the QCA based rate-1/2 and memory length-2 convolutional encoders that can generate one kind of error correcting codes from the perspective of information redundancy. Three schemes of layouts are presented and compared, and the majority-based type has the compactest layout and lowest latency. Our simulation results demonstrate that these encoders can all functionally work.