Mr. Dil Nashin Anwar Profile

Dil Nashin Anwar

at Indraprastha Institute of Information Technology

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 1 February 2019 Paper

Power and SER analysis of VLC- and RF-based links in indoor environment

Anand Singh, Dil Nashin Anwar, Anand Srivastava, Vivek Ashok Bohara, G Subrahmanya VRK Rao

Proceedings Volume 10945, 109450R (2019) https://doi.org/10.1117/12.2508695

KEYWORDS: Signal to noise ratio, Modulation, Telecommunications, RF communications, Systems modeling, Receivers, Visible radiation, Phase shift keying, Non-line-of-sight propagation

Read Abstract +

The cellular system goes through significant power loss due to indoor channel fading, the height of the building, wall reflections, etc. Visible Light Communication (VLC) in conjunction with the radio frequency (RF) communication can provide potential solutions to address issues wireless network is facing in the indoor environment. VLC uses existing illumination infrastructure for communication. VLC is more secure because light cannot penetrate through the wall, can offer high bandwidth and is environmentally safe green technology, unlike RF. This paper analyses and compares the RF and VLC link for indoor communication with respect to symbol-error-rate (SER) performance and power saving. The RF link path loss inside the building is modeled using WINNER-II path loss model, and VLC channel is modeled including the movement of the people. The same constellation-based modulation schemes are used in both the links for fair comparison such as binary phase shift keying (BPSK) for RF and on-o keying (OOK) for VLC, M^thorder quadrature amplitude modulation (M-QAM) for RF and colour shift keying (M-CSK) for VLC. VLC link provides better SER performance as compared to RF link at the same signal-to-noise-ratio (SNR) for both BPSK (OOK) and 4-QAM (4-CSK) modulation schemes. There is an outstanding amount of power saving using VLC link as compared to RF link inside the room. Further, the SER gap between VLC and RF decreases as the constellation size increases.

Proceedings Article | 17 May 2018 Paper

VLC-based safe, low-cost, and accurate healthcare system for video EEG using colour constellation scheme

Dil Nashin Anwar, Anand Srivastava

Proceedings Volume 10685, 1068549 (2018) https://doi.org/10.1117/12.2307342

KEYWORDS: Receivers, Electroencephalography, Signal to noise ratio, Video, Photodiodes, Light emitting diodes, Transmitters

Read Abstract +

Visible light communication (VLC) has various advantages over radio frequency (RF) communication such as ubiquity, low energy consumption, no RF radiation, and inherently secure as light does not penetrate through walls. Significant bio-medical signals including the electroencephalography (EEG) can be transferred with VLC even in places where RF is forbidden. Additionally, long-term exposure to RF radiation poses a risk to the human brain which limits the use of RF wireless wearable EEG systems. This potential advantage of VLC could help in the indoor healthcare system such as monitoring. A long-term video-EEG monitoring requires continuous monitoring by video along-with EEG signals. So, overall a significant amount of data needs to be streamed fast for real-time monitoring. A novel low-cost RF radiation-free system is proposed using VLC technology which can be integrated into a wearable EEG device. In this work, we transmit a video and multi-channel EEG signal using visible light communication. Data streams are modulated using colour shift keying (CSK) which drives the RGB LED. CSK gives double the data rate than OOK by mapping bits into a symbol. It keeps the average emitted optical colour constant during communication, thereby reduces potential human health complication related to light ashes. The proposed system aims to lower down the cost and complexity further by using single photodiode at the receiver unlike conventional CSK in IEEE 802.15.7. The receiver architecture exploits channel estimation in a better way. Computer simulations are carried out using actual raw EEG signals and video data. Simulated and theoretical SER versus SNR curves match seamlessly. The results demonstrate that at 33 dB SNR, it achieves a SER of 1x10^-5. SER for different transmitter and receiver distance is also analysed. Further, the reliability and accuracy of data received at 33 dB is also discussed.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years