0000000000727822

AUTHOR

Lida Kouhalvandi

showing 2 related works from this author

Optical-Microwave Sensor for Real-Time Measurement of Water Contamination in Oil Derivatives  

2023

This paper presents a novel microwave sensor using optical activation for measuring in real-time the water contamination in crude oil or its derivatives. The sensor is constructed from an end-coupled microstrip resonator that is interconnected to two pairs of identical fractal structures based on Moore curves. Electromagnetic (EM) interaction between the fractal curves is mitigated using a T-shaped microstrip-stub to enhance the performance of the sensor. The gap in one pair of fractal curves is loaded with light dependent resistors (LDR) and the other pair with microwave chip capacitors. The chip capacitors were used to increase the EM coupling between the fractal gaps to realize a high Q-…

Microstrip sensor electromagnetic (EM) spectrum fractal curves Light dependent resistors (LDR)Settore ING-INF/01 - Elettronica
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Detection of Signals in MC–CDMA Using a Novel Iterative Block Decision Feedback Equalizer

2022

This paper presents a technique to mitigate multiple access interference (MAI) in multicarrier code division multiple access (MC-CDMA) wireless communications systems. Although under normal circumstances the MC-CDMA system can achieve high spectral efficiency and resistance towards inter symbol interference (ISI) however when exposed to substantial nonlinear distortion the issue of MAI manifests. Such distortion results when the power amplifiers are driven into saturation or when the transmit signal experiences extreme adverse channel conditions. The proposed technique uses a modified iterative block decision feedback equalizer (IB-DFE) that uses a minimal mean square error (MMSE) receiver …

General Computer ScienceIterative methodsMultiaccess communicationReceiversMMSENonlinear distortionCodesFeedbackCDMA[SPI]Engineering Sciences [physics]CDMA OFDM MAI MMSE IB-DFE Maximum Likelihood (ML)General Materials ScienceSpectral efficiencyMaximum likelihood (Ml)Electrical and Electronic EngineeringOFDMDecision feedback equalizers[PHYS]Physics [physics]TelecomunicacionesPower amplifiersGeneral EngineeringMAIMaximum Likelihood (ML)Multicarrier code division multiple accessAI and TechnologiesBit error rateIB-DFESignal detectionEngineering Research GroupIEEE Access
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