Design of QCA-Serial Parallel Multiplier (QSPM) With Energy Dissipation Analysis

摘要

This brief presents an efficient single-layer serial-parallel multiplier (SPM) in Quantum-dot Cellular Automata (QCA). We have designed a bit-serial adder (BSA) using a fully utilized majority gate (MV), and a modified E-shaped exclusive-OR (E-XOR) gate. The cell-interactive properties of the QCA cell have been utilized to realize the proposed E-XOR gate. This new gate leads the proposed SPM to achieve a reduction in cell count and area by 30% and 19%, 29% and 24%, 30% and 22%, 32% and 39%, and 36% and 46% for 4-, 8-, 16-, 32-, and 64-bit multipliers, respectively. All proposed circuits have been simulated and verified by using QCADesigner with a coherence vector simulation engine. In addition, the average switching and leakage energy dissipation are estimated using QCAPro tool.