PHY Layer Engineer
Wireless & Optical Wireless Communications · Signal Processing · FPGA
Function Research & Development — Optical Wireless PHY
Level Senior Physical Layer Developer
Education M.Tech / M.S. / Ph.D. — ECE, EE, Signal Processing
Experience 4–8 years · PhD counts as experience
Location In office
Velmenni is a leading Optical Wireless Communication (OWC) company developing LiFi and Free-Space Optical (FSO) technologies for next-generation high-speed wireless networks. We combine communication theory, signal processing, FPGA acceleration, and photonics to build real-world optical communication systems. Our team works across the full innovation cycle—from research and simulation to hardware prototyping and deployment—creating technologies that complement and extend traditional RF-based wireless networks. This is an R&D; position. You will own the design, development, and experimental validation of physical layer algorithms for LiFi and Free-Space Optical (FSO) communication systems — from theoretical formulation and simulation through to FPGA prototyping.



Publishing and prototyping are both expected.
Responsibilities
• Design and develop PHY algorithms for LiFi and FSO — modulation (OOK, PPM, DCO-OFDM, ACO-OFDM), channel coding (LDPC, Polar, RS), and synchronisation
• Model and simulate optical wireless channels: atmospheric turbulence, pointing errors, IM/DD receiver noise, ambient light interference, and LED/laser non-linearities
• Build end-to-end link-level simulation chains in MATLAB or Python and evaluate BER, throughput, and spectral efficiency under realistic conditions
• Implement validated algorithms on FPGA — translate fixed-point models into RTL or HLS; own algorithm correctness through hardware validation
• Write bit-exact C/C++ reference models to support hardware verification
• Track and engage with relevant standards: IEEE 802.11bb (LiFi), ITU-T FSO, and adjacent wireless standards Required
• M.Tech, M.S., or Ph.D. in ECE, Electrical Engineeri

📌 Velmenni - Physical Layer Developer (New Delhi)
🏢 NextHire
📍 New Delhi