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Author

A. Jabeena

Bio: A. Jabeena is an academic researcher from VIT University. The author has contributed to research in topics: Relay & Wireless. The author has an hindex of 3, co-authored 14 publications receiving 26 citations.

Papers
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Journal ArticleDOI
S. Magidi1, A. Jabeena1
TL;DR: The proposed architecture revealed that 10 Gbits/s symmetric SS-WDM RoFSO can achieve 4.167 km of free space transmission and power penalty of approximately 0.2 and 3 dB was achieved for downstream and upstream, respectively, which assures the feasibility of the proposed architecture.
Abstract: A cost-effective spectrum sliced wavelength division multiplexing radio over free space (SS-WDM RoFSO) full duplex communication system architecture has been proposed and analyzed. For the downlink, a 10 Gbits/s high spectrally efficient and amplitude maintaining modified duobinary return to zero (MDRZ) modulated the filtered slices from the light source. The free space optical (FSO) channel was modeled by the well-known Gamma-Gamma model and was further subjected to moderate rain attenuation conditions. Four FSO transceivers were used to mitigate against laser beam scintillation, geometrical losses and rain attenuation. For uplink, a reflective semiconductor optical amplifier (RSOA) was used both as a modulator and an amplifier. Its amplitude squeezing effect was used to erase the information in the MDRZ modulated downstream seeding wavelength for uplink transmission of 10 Gbits/s NRZ OOK signals. At a bit error rate (BER) of 1.262 × 10 − 9 $1.262\\times 10^{-9}$ , our proposed architecture revealed that 10 Gbits/s symmetric SS-WDM RoFSO can achieve 4.167 km of free space transmission. Power penalty of approximately 0.2 and 3 dB was achieved for downstream and upstream, respectively, which assures the feasibility of the proposed architecture. Such a system is meant to co-exist with the forthcoming fifth generation long-term evolution urban systems.

8 citations

Proceedings ArticleDOI
01 Dec 2017
TL;DR: A working model of an automatic pill reminder and dispenser setup that can alleviate irregularities in taking prescribed dosage of medicines at the right time dictated by the medical practitioner and switch from approaches predominantly dependent on human memory to automation with negligible supervision is presented.
Abstract: In this paper we present a working model of an automatic pill reminder and dispenser setup that can alleviate irregularities in taking prescribed dosage of medicines at the right time dictated by the medical practitioner and switch from approaches predominantly dependent on human memory to automation with negligible supervision, thus relieving persons from error-prone tasks of giving wrong medicine at the wrong time in the wrong amount.

7 citations

Proceedings ArticleDOI
01 Dec 2017
TL;DR: A White LED based data transmission is demonstrated minimizing interference in radio frequency based model for smart home based on an efficient visible light communication.
Abstract: Automation of various appliances are already present using RF bands but this model for smart home is based on an efficient visible light communication. For multiple devices, a time division based VLC link is used. A White LED based data transmission is demonstrated minimizing interference in radio frequency based model.

5 citations

Posted Content
17 Nov 2017
TL;DR: In this article, the authors present a working model of an automatic pill reminder and dispenser setup that can alleviate irregularities in taking prescribed dosage of medicines at the right time dictated by the medical practitioner.
Abstract: In this paper we present a working model of an automatic pill reminder and dispenser setup that can alleviate irregularities in taking prescribed dosage of medicines at the right time dictated by the medical practitioner and switch from approaches predominantly dependent on human memory to automation with negligible supervision, thus relieving persons from error-prone tasks of giving wrong medicine at the wrong time in the wrong amount.

5 citations


Cited by
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Journal ArticleDOI
TL;DR: The experimental result proves that the hybrid of 25 km SMF with FSO link increases the communication coverage range with a reasonable performance and compares and evaluates the signal transmission performance of channels after back-to-back (BTB) and error vector magnitude (EVM) transmission.

21 citations

Journal ArticleDOI
TL;DR: In this paper, a wavelength division multiplexing (WDM) based architecture employing different l-valued OAM beams having different modes and wavelengths to realize 100Gbps data transmission over free space is proposed and successfully demonstrated.
Abstract: The helical phase front of the light beam carry orbital angular momentum (OAM) with azimuthally phase dependence. OAM beams of different topological charges are generated using spatial laser sources and vortex lens. A wavelength division multiplexing (WDM) based architecture employing different l-valued OAM beams having different modes and wavelengths to realize 100Gbps data transmission over free space is proposed and successfully demonstrated. 10X10 Gbps data-rate is fruitfully transmitted over 3200 m free space and tested for different environmental scenario such as clear weather, haze, rain and fog. A very low bit error rate value of 5 × 10−9, good Q-value of 5.4 with excellent eye-diagram are achieved. This proposed configuration with power penalty of 2.4 dB, which evidenced that the architecture is suitable for free space data transmission. The transmission performance is also enhanced due to sufficiently low crosstalk (~ −25 dB) compared to WDM technique without employing OAM beams.

16 citations

Journal ArticleDOI
02 Mar 2018-Sensors
TL;DR: A context-aware system that monitors air quality to prevent a specific health problem at home is presented to reduce the incidence of the Sudden Infant Death Syndrome, which is triggered mainly by environmental factors.
Abstract: Context-aware monitoring systems designed for e-Health solutions and ambient assisted living (AAL) play an important role in today’s personalized health-care services. The majority of these systems are intended for the monitoring of patients’ vital signs by means of bio-sensors. At present, there are very few systems that monitor environmental conditions and air quality in the homes of users. A home’s environmental conditions can have a significant influence on the state of the health of its residents. Monitoring the environment is the key to preventing possible diseases caused by conditions that do not favor health. This paper presents a context-aware system that monitors air quality to prevent a specific health problem at home. The aim of this system is to reduce the incidence of the Sudden Infant Death Syndrome, which is triggered mainly by environmental factors. In the conducted case study, the system monitored the state of the neonate and the quality of air while it was asleep. The designed proposal is characterized by its low cost and non-intrusive nature. The results are promising.

14 citations

Journal ArticleDOI
01 Feb 2019-Optik
TL;DR: An opto-electro decoder is envisaged in this research using the principle of filter and fidelity, where filter deals with an optical grating structure and fidelity are coped with light wave technology via visible communication.

7 citations