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Chaudhari, Bharat S.
- A VHDL Implementation of Ternary Arithmetic and Logic Unit for Multi Valued Processor
Authors
1 Pune Institute of Computer Technology, Pune, 411043, IN
2 Maharastra Institute of Technology, Pune, IN
3 Matoshri College of Engineering, Nasik, IN
Source
Programmable Device Circuits and Systems, Vol 7, No 6 (2015), Pagination: 185-193Abstract
Multi valued processors are promising choices for future computing technology. Multi Valued Logic [MVL] has seen major advancement in the recent past due to several advantages offered by them over the binary logic, thus making it a thrust area for further research. The switching algebra has expanded from binary to penta level, progressing through ternary and quaternary levels. The processors designed with multi valued logic will revolutionize the digital world. Arithmetic Logic Unit [ALU] forms an inherent entity of every processor. This paper presents a novel and an efficient technology dependent method for defining, analyzing, testing and implementing vectored ternary ALU using Very-High-Speed Integrated Circuits, VHSIC Hardware Description Language [VHDL]. The implementation of sub-program overloading feature in the proposed Ternary ALU [TALU] makes its design unique, flexible and portable for further extension. The designed 4 - trit TALU performs a variety of arithmetic and logical operations. The timing performance of the proposed TALU signifies encouraging results that will pave the path for further developments in ternary processors.Keywords
Multi Valued Logic, Ternary Logic, Ternary ALU, VHDL.- Enhanced Adaptive Routing Technique for Benes ONoC
Authors
1 Department of Electronics and Telecommunication Engineering, Maharashtra Institute of Technology, Pune-411038
2 Department of Electronics and Telecommunication Engineering, Maharashtra Institute of Technology, Pune, 411038, IN
Source
Networking and Communication Engineering, Vol 8, No 2 (2016), Pagination: 31-34Abstract
Now a days silicon photonics is a promising technology for many core systems that gives low power dissipation, high throughput and low latency over electrical interconnects. The optical network on chip (ONoC) with wavelength division multiplexing technique is a novel technique to satisfy the power budget for high terabit scale, higher data rates and large bandwidth. The routing technique plays a vital role in the network performance of Benes network. We have proposed an enhanced distributed routing technique for Benes network.
The proposed algorithm is assessed by comparing it with previous adaptive routing algorithm for Benes network in terms of time and end to end delay parameters. The proposed algorithm shows the better results as compare to previous mentioned techniques. The improvement in performance shows average of 87% with new enhanced distributed routing algorithm for end to end delay and time required for the execution of the routing algorithm.
Keywords
Optical Network on Chip (ONoC), Benes Network, Adaptive Routing, End to End Delay.- Impact of Coherent and Incoherent Crosstalks and Power Penalty on the Optical Crossconnects
Authors
1 Bharati Vidyapeeth University College of Engineering, Pune, IN
2 International Institute of Information Technology, Pune, IN
3 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, CN
Source
ICTACT Journal on Communication Technology, Vol 2, No 4 (2011), Pagination: 427-432Abstract
Optical cross-connects are one of the most important components in the dense wavelength division multiplexer based optical networks. The crossconnects suffer from crosstalk due to the different wavelength light path channels during the switching process leading to the deterioration in bit error rate (BER) and hence in the system performance. This paper presents the study of impact of coherent and incoherent crosstalk and power penalty on the optical cross-connects in WDM Networks. The effect of accumulation of coherent crosstalk at different stages of crossconnect has been also investigated and analyzed for the blocking probabilities. Results of coherent and incoherent crosstalk are compared to identify their impact on the working of the cross-connect. The results show that the crosstalk increases with increase in either the number of wavelengths per fiber or the number of input fibers. The result also illustrates decrease in the interference penalty by correlating the crosstalk contributions with each other at the appropriate phase angle. We show that an acceptable blocking probability due to crosstalk is achievable for active wavelengths in the WDM network. The present study can be used to model the possible number of routing stages in such networks.Keywords
Coherent Crosstalk, Incoherent Crosstalk, Optical Cross-Connects, Blocking Probabilities, Power Penalty.- New Weight Dependent Routing and Wavelength Assignment Strategy for all Optical Networks in Absence of Wavelength Converters
Authors
1 Department of Electronics and Telecommunication Engineering, Maharashtra Institute of Technology, IN
2 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, CN