4 papers
On Error Rate Approximations for FSO Systems with Weak Turbulence and Pointing Errors
Carmen Álvarez Roa, Yunus Can Gültekin, Kaiquan Wu +2
Atmospheric attenuation, atmospheric turbulence, geometric spread, and pointing errors, degrade the performance of free-space optical transmission. In the weak turbulence regime, t…
A New 5 bit/2D-symbol Modulation Format for Relative Intensity Noise-dominated IM-DD Systems
Felipe Villenas, Kaiquan Wu, Yunus Can Gültekin +2
We propose a novel 5-bit/2D-symbol modulation format based on PAM-6 optimized for IM-DD systems dominated by relative intensity noise. The proposed modulation scheme improves SNR b…
On Geometric Shaping for 400 Gbps IM-DD Links with Laser Intensity Noise
Felipe Villenas, Kaiquan Wu, Yunus Can Gültekin +2
We propose geometric shaping for IM-DD links dominated by relative intensity noise (RIN). For 400 Gbps links, our geometrically-shaped constellations result in error probability im…
A Simple BER Expression for FSO Systems with Weak Turbulence and Pointing Errors
C. Álvarez Roa, Y. C. Gültekin, K. Wu +2
We develop a simple approximation for the average BER for an FSO system impacted by weak turbulence and pointing errors. Numerical results show that the proposed expression accurat…