Design and Simulation of Turbo Encoder in Quantum-Dot Cellular Automata

Abstract

Quantum-dot Quantum-dot Quantum-dot Quantum-dot cellular cellular cellular cellular automata automata automata automata (QCA) (QCA) (QCA) (QCA) is is is is a a a a potential potential potential potential nanoelectronic nanoelectronic nanoelectronic nanoelectronic technology technology technology technology for for for for information information information information processing. processing. processing. processing. T T T To o o o be be be be considered considered considered considered as as as as a a a a suitable suitable suitable suitable CMOS CMOS CMOS CMOS candidate candidate candidate candidate, , , , QCA QCA QCA QCA must must must must be be be be able able able able to to to to implement implement implement implement complex complex complex complex real-time real-time real-time real-time applications applications applications applications of of of of bit-serial bit-serial bit-serial bit-serial information information information information processing, processing, processing, processing, which which which which lacks lacks lacks lacks of of of of enough enough enough enough investigation. investigation. investigation. investigation. T T T Turbo urbo urbo urbo encoding encoding encoding encoding is is is is one one one one of of of of such such such such applications, applications, applications, applications, which which which which refers refers refers refers to to to to three three three three representative representative representative representative issues issues issues issues of of of of bit-serial bit-serial bit-serial bit-The inherent inherent inherent inherent shift-register shift-register shift-register shift-register nature nature nature nature of of of of QCA QCA QCA QCA offers offers offers offers an an an an advantage advantage advantage advantage to to to to performing performing performing performing convolution convolution convolution convolution computation computation computation computation but but but but poses poses poses poses handicaps handicaps handicaps handicaps to to to to resolve resolve resolve resolve the the the the latter latter latter latter two two two two issues. issues. issues. issues. H H H How ow ow ow to to to to manage manage manage manage the the the the ambivalent ambivalent ambivalent ambivalent effects effects effects effects of of of of shift-register shift-register shift-register shift-register nature nature nature nature is is is is investigated investigated investigated investigated in in in in this this this this work, work, work, work, which which which which determines determines determines determines the the the the efficient efficient efficient efficient design design design design of of of of T T T Tu u u urbo rbo rbo rbo encoder. encoder. encoder. encoder. A A A A strobe strobe strobe strobe scheme scheme scheme scheme based based based based on on on on main-branch main-branch main-branch main-branchwire wire wire wire crossing crossing crossing crossing is is is is proposed proposed proposed proposed to to to to efficiently efficiently efficiently ef...

Analysis of QCA-Based Serial Concatenated Convolution Coding Encoder for Error Correction

“…The SPC first parallelizes the systematic codeword C as C = [C0, C1, C2, C3, C4, C5, C6] into seven separate values where C6 and C0 are the MSB and LSBs, respectively. The parallelized bits are now interchanged and interchanged upside down, and the resulting output is then again serialized using the PSC (7-bit) resulting in a permuted codeword (I) [1].…”

“…SCCC is used to increase the reliability of the data that are transmitted. Since the error can be detected and corrected at the receiver, the need for retransmission is eliminated and thus improves the efficiency of the usage of bandwidth [1]. Such encoding technique is used to implement an encoder which can be used in the channel encoder part of the transmission end of the communication system.…”

A Design Methodology of Line Feedback Shift Registers With Quantum Cellular Automata

“…Therefore, we can convert the crossover into a crossbar according to the findings. We firstly propose this crossbar as shown in previous work [20]. The crossbar is firstly configured with two adjacent clock zones as Fig.…”

“…In previous work [20], we proposed a main-branch crossover (MBX), built a time-saving counterpart acting as a MUX with it, and settle the above problem of single feedback design. It is worth noting that this method can make sure Turbo encoder generate a continuous code word that is very important for parity bit.…”

Design and implementation of crossbar scheduler for system‐on‐chip network in quantum dot cellular automata technology

“…In recent years, QCA devices have acquired a great deal of attention toward the design and development of digital circuits. Immense research has been carried out in designing several arithmetic circuits, comparators, combinational circuits( ) using QCA technology. Among the sequential circuits, QCA‐based registers, memory devices, and flip‐flop( ) have gained popularity in recent years.…”