Research portfolio / Projects

Projects

Interactive Simulators & Code

Open-source simulations, analytical models, and interactive tools for wireless communications and sensing.

Portrait of Harsh Raj

Currently a PhD Student at IIT Guwahati

Maintainer
Harsh Raj
Languages
MATLAB, Python, HTML5 Canvas / JS
Repositories
Main Projects
IRS-ISAC-NOMA System Outage, Space Shift Keying Performance, Web-based Real-time Fading Simulator

GitHub Repositories

Academic code repositories containing simulation environments, analytical mathematical graphs, and comparative models.


Rician Fading Simulator

Interactive analytical tool visualizing the statistics of Rician fading envelopes. Adjust sliders to modify parameters in real time.

Real Component Mean (\(m_1\)) 1.0
Imaginary Component Mean (\(m_2\)) 5.0
Standard Deviation (\(\sigma\)) 4.0

Derived Parameters

LOS Component Strength (\(s\)): 5.10
K-factor (linear): 0.81
K-factor (dB): -0.91 dB
Mean Envelope Amplitude: 5.82
Envelope Variance: 16.32
MATLAB Script

Theoretical Probabilities

Amplitude Probability Density Function (PDF)
\[f_A(x) = \frac{x}{\sigma^2} \exp\left(-\frac{x^2+s^2}{2\sigma^2}\right) I_0\left(\frac{x s}{\sigma^2}\right), \quad x \ge 0\]
Phase Probability Density Function (PDF)
\[f_{\Phi}(\phi) = \frac{1}{2\pi} e^{-\frac{s^2}{2\sigma^2}} + \frac{m_{\text{til}}}{\sqrt{2\pi}\sigma} e^{\frac{m_{\text{til}}^2 - s^2}{2\sigma^2}} Q\left(-\frac{m_{\text{til}}}{\sigma}\right)\]
where \(m_{\text{til}} = m_1\cos\phi + m_2\sin\phi\) and \(s = \sqrt{m_1^2 + m_2^2}\).

Publication Linked Code

Reproducible files and folders linked to specific peer-reviewed papers.

Cascaded Channel Statistics — IRS-ISAC-NOMA

MATLAB code for reconfigurable array phase optimization, direct/cascaded fading computation, and NOMA outage curves.

IEEE NCC 2025 IRS ISAC

IRS-SSK & RPM Performance Analysis

Simulation scripts evaluating average bit error rate (ABER) for SSK systems using reconfigurable antennas.

IEEE VTC-Spring 2024 SSK Rician Channels

NOMA-ISAC DL/UL Performance

Simulations comparing NOMA vs OMA spectral efficiency and target sensing detection probabilities in uplink/downlink.

IEEE TCCN 2025 NOMA-ISAC Uplink/Downlink

Resources