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Author

Amlan Chakraborty

Bio: Amlan Chakraborty is an academic researcher from University of Calcutta. The author has contributed to research in topics: Computational logic & Logic gate. The author has an hindex of 2, co-authored 2 publications receiving 4 citations.

Papers
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Proceedings ArticleDOI
01 Mar 2019
TL;DR: The transient response of Hybrid CMOS-memristor based logic gates and different adder circuits and multiplier circuit are performed in Cadence 180nm technology.
Abstract: Recent researches are mostly focused on technology scaling as well as device size minimization design techniques following Moore’s law. Conventional computing architectures are unable to fulfill modern application demands. Memristor is a promising alternative device which has been developed by many researchers [2] to draw attention of its structure for numerous applications which includes computational logic, memory implementations and neuromorphic systems. This paper emphasizes the basic properties of memristor at the device level. Different digital circuits have been designed for logic operations and DSP applications. Design methodologies are developed for proper circuit design, and circuit parameters are taken from a very detailed device model and optimization techniques. The transient response of Hybrid CMOS-memristor based logic gates and different adder circuits (i.e, half adder, full adder, carry-save adder) and multiplier circuit are performed in Cadence 180nm technology.

6 citations

Proceedings ArticleDOI
24 Mar 2011
TL;DR: In this article, the authors have realized vertical handover in four levels from basic fundamental level to final complex levels of vertical handoff and observed that acceptance; lock and track of particular spectrum and rejection of unwanted spectrum are achieved with this set up.
Abstract: The objective of this paper is to present a realization of vertical Handover which is applicable for 4G communication networks. The authors have realized vertical handover in four levels. Four different experiments have been conducted in the laboratory corresponding to four levels from basic fundamental level to final complex levels of vertical handover. It is observed that acceptance; lock and track of particular spectrum and rejection of unwanted spectrum are achieved with this set up. It leads to vertical handover in 4G communications.

2 citations


Cited by
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Proceedings Article
01 Jan 1998
TL;DR: Current and proposed protocols for mobility management for public land mobile network (PLMN)-based networks, mobile Internet protocol (IP) wireless asynchronous transfer mode (ATM) and satellite networks, and an outline of open problems to be addressed by the next generation of wireless network service are discussed.
Abstract: This paper describes current and proposed protocols for mobility management for public land mobile network (PLMN)-based networks, mobile Internet protocol (IP) wireless asynchronous transfer mode (ATM) and satellite networks. The integration of these networks will be discussed in the context of the next evolutionary step of wireless communication networks. First, a review is provided of location management algorithms for personal communication systems (PCS) implemented over a PLMN network. The latest protocol changes for location registration and handoff are investigated for mobile IP followed by a discussion of proposed protocols for wireless ATM and satellite networks. Finally, an outline of open problems to be addressed by the next generation of wireless network service is discussed.

28 citations

Journal ArticleDOI
TL;DR: In this article , a self-repairing neuron network circuit was proposed, which utilizes a memristor to simulate changes in neurotransmitters when a set threshold is reached, which can detect faults automatically.
Abstract: A large number of studies have shown that astrocytes can be combined with the presynaptic terminals and postsynaptic spines of neurons to constitute a triple synapse via an endocannabinoid retrograde messenger to achieve a self-repair ability in the human brain. Inspired by the biological self-repair mechanism of astrocytes, this work proposes a self-repairing neuron network circuit that utilizes a memristor to simulate changes in neurotransmitters when a set threshold is reached. The proposed circuit simulates an astrocyte-neuron network and comprises the following: 1) a single-astrocyte-neuron circuit module; 2) an astrocyte-neuron network circuit; 3) a module to detect malfunctions; and 4) a neuron PR (release probability of synaptic transmission) enhancement module. When faults occur in a synapse, the neuron module becomes silent or near silent because of the low PR of the synapses. The circuit can detect faults automatically. The damaged neuron can be repaired by enhancing the PR of other healthy neurons, analogous to the biological repair mechanism of astrocytes. This mechanism helps to repair the damaged circuit. A simulation of the circuit revealed the following: 1) as the number of neurons in the circuit increases, the self-repair ability strengthens and 2) as the number of damaged neurons in the astrocyte-neuron network increases, the self-repair ability weakens, and there is a significant degradation in the performance of the circuit. The self-repairing circuit was used for a robot, and it effectively improved the robots' performance and reliability.

18 citations

Book
31 Jul 2012
TL;DR: Two new energy detection (ED) Ultra-Wideband (UWB) systems are proposed in this dissertation and they are based on using two pulses, which are the different-order derivatives of the Gaussian pulse, to transmitted bit 0 or 1.
Abstract: Two new energy detection (ED) Ultra-Wideband (UWB) systems are proposed in this dissertation. The first one is an ED UWB system based on pulse width modulation (PWM). The bit error rate (BER) performance of this ED PWM system is slightly worse than ED pulse position modulation (PPM) system in additive white Gaussian noise (AWGN) channels. However, the BER performance of this ED PWM system surpasses that of a PPM system in multipath channels since a PWM system does not suffer cross-modulation interference (CMI) as a PPM system. In the presence of synchronization errors, the BER performance of a PWM system also surpasses that of a PPM system. The second proposed ED UWB system is based on using two pulses, which are the different-order derivatives of the Gaussian pulse, to transmitted bit 0 or 1. These pulses are appropriately chosen to separate their spectra in frequency domain. The receiver is composed of two energy detection branches and each branch has a filter which captures the signal energy of either bit 0 or 1. The outputs of two branches are subtracted from each other to generate the decision statistic and the value of this statistic is compared to a threshold to determine the transmitted bits. This system is named as Gaussian FSK (GFSK) system in this dissertation

8 citations

Journal ArticleDOI
TL;DR: In this paper , the authors provide a systematic review of recent trends in the interaction between computer science and nanotechnology by highlighting two parallel axes, the first axis includes the use of nanotechnology in enhancing computer systems and devices, and the other one includes the role of computer science in promoting nanotechnology.

3 citations

Proceedings ArticleDOI
07 Oct 2021
TL;DR: In this paper, the LTspice simulator is used to address memristor behavior and a new circuit is also developed for programming the memristors memristance with a predetermined analog value.
Abstract: Current biomedical applications are using numerous wired and wireless sensors that keep track of various biological signals. These signals are continuously tracked, processed, and monitored for different biomedical applications. In this process, power consumption of the sensor is one of the important parameters to investigate. Most of the signal processing mechanisms is performed in mobile or computer-based applications. But data conversion and transfer can only be performed in sensor hardware where basic arithmetic operations are evaluated on voltages or current values. This work make use of a new and simple method to perform analog arithmetic operations, in which signals are interpreted and also stored using the memristor, rather than voltage or current. A new circuit is also being developed for programming the memristor's memristance with a predetermined analog value. The power dissipated by CMOS EX-NOR gate is highest, the power dissipated by memristor NOR gate is least. This paper will use the LTspice simulator, a common version of SPICE, to address memristor behavior.

2 citations