An optical time division multiplexing (TDM) scheme using soliton interaction is proposed in the thesis to save the time-bandwidth prduct (TBP). The soliton multiplexer (MUX) consisting of a highly nonlinear fiber (HNLF) combines two adjacent solitons to form a composite soliton, while the soliton demultiplexer (DEMUX) consisting of a similar HNLF restores the component solitons. The case of int...

A multi-channel low-power circuit for auditory neural signal processing from multichannel microprobes for implanting in the auditory nerve has been designed and simulated. The chip is being fabricated with the AMI 0.5 μm triple-metal double-poly CMOS process with a die size of 1.5 × 1.5 mm. Low-noise and low-power preamplifiers are designed to pick up the weak signals from each microelectrode w...

Quantum-Dot Cellular Automata (QCA) is a radical technology, which works at Nanoscale. Due to its numerous advantages over the conventional CMOS-based digital circuits, researchers are now concentrating more on designing digital circuits using this technology. Researchers have reported various findings in this field till now. In this paper, a modular 2:1 Multiplexer has been designed followed b...

This paper considers methods to design multiple-output networks based on decision diagrams (DDs). TDM (time-division multiplexing) systems transmit several signals on a single line. These methods reduce: 1) hardware; 2) logic levels; and 3) pins. In the TDM realizations, we consider three types of DDs: shared binary decision digrams (SBDDs), shared multiple-valued decision diagrams (SMDDs), and...

With the high demand of low power digital systems, energy dissipation in the digital system is one of the limiting factors. Reversible logic is one of the alternate to reduce heat/energy dissipation in the digital circuits and have a very significant importance in bioinformatics, optical information processing, CMOS design etc. In this paper the authors propose the design of new 2bit binary Squ...

In SoC no. of IP block inside it depends upon specific application, increase in the Ip block increases no. of digital control lines causes increase in the size of the chip. GPIO helps internal IP blocks to share digital control lines using MUX and avoids additional circuitry. Since design productivity cannot follow the pace of nanoelectronics technology innovation, it has been required to devel...

Audio restoration is effectively achieved by using low complexity algorithm called AMP. This algorithm has fast convergence and has lower computation intensity making it suitable for audio recovery problems. This paper focuses on restoring an audio signal by using VLSI architecture called AMPM that implements AMP algorithm. This architecture employs MAC unit with fixed bit Wallace tree multipli...

Adaptive filtering constitutes an important class of DSP algorithms employed in several hand held mobile devices for applications such as echo cancellation, signal de-noising, and channel equalization. The throughput of the proposed design is increased by parallel lookup table (LUT) update.The 16:1 multiplexer is replace by a 8:1 and 2:1 MUX. The conventional adder-based shift accumulation for ...

In clustered sensor networks, an adversary can easily capture and damage a member node. Therefore, it is important to detect the compromised nodes renew keys of all other nodes. Although many key renewal schemes have been proposed, detection still difficult achieve. Furthermore, due resources limitation, conventional encryption authentication protocols are impractical when we take power consump...