http://dspace.dtu.ac.in:8080/jspui/handle/123456789/200 2026-04-28T04:03:36Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/18964 Title: STUDY AND IMPLEMENTATION OF THRESHOLD TYPE BINARY MEMRISTOR EMULAT Authors: ROY, JULI KUMARI Abstract: Memristor is a fourth basic circuit element which depicts the relationship between charge (q) and flux (𝟇). There is a lean presence of fabricated memristors in the market due to complexities involved in its processing. Therefore, significant research efforts are made towards presenting emulators that mimic memristor behaviour. In this project, new memristor emulator circuit has been designed based on DVCC and CFOA. The emulator consists of subtractor, inverting amplifier, integrator, bistable circuit, inverting summing amplifier, multiplier and voltage into current to ensures floating characteristic of the emulator. The subtractor senses the memristor voltage. The diodes in anti-parallel configuration provides threshold sensitive behaviour of the emulator which may be adjusted by resistor ratio. The integrator ensures the dependence of memductance on history state. The bistable circuit provides non-volatility and bistable properties of the emulator. The proposed circuit uses lesser number of resistor than the available binary memristor circuit. The proposal has been verified through Pspice simulations. 2021-06-01T00:00:00Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/14725 Title: PERFORMANCE ANALYSIS OF MWOOC AND OCFHC/OOC OPTICAL ORTHOGONAL CODES Authors: HAYARAN, TARUN SINGH Abstract: With the rising challenges of coping up with the effective utilization of bandwidth due to increasing number of users in communication system, it is our utmost requirement to reduce the probability of bit error i.e. bit error rate as far as possible. The large bit error rate degrades the signal to noise ratio at the receiver end. The bit error rate arises due to the fact that when various user communicate using a single channel, there arises significant amount of interference and crosstalk in channel which are responsible for the reason of degradation of signal to noise ratio at receiver. Here we are introducing couple of coding techniques which reduce the bit error rate by using optical CDMA techniques. These techniques are MWOOC and OCFHC / OOC codes. The bit error rate of the system employing these coding techniques are evaluated and then there performance and their impact on decreasing in effective bit error rate of the system is evaluated for several users communicating over a channel. Their mathematical analysis and simulation is done which reveals the effectiveness of these coding techniques in reducing the bit error rate of systems. 2016-05-01T00:00:00Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/13369 Title: MAJOR PROJECT REPORT ON SPREAD SPECTURM BASED ENERGY - EFFICIENT WATERMARKING Authors: RAHEJA, DINESH KUMAR Description: ME THESIS 2006-01-27T00:00:00Z