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arXiv · 2605.17521

FPGA-Based Experimental Analysis of Fixed-Point Precision Impact on SOP Estimation in Coherent Communications Receivers

Geraldo Gomes·Rafael Vieira·Hani Kbashi·Aleksandr Donodin·Shekhar Saxena·Stylianos Sygletos·Ian Phillips·Jaroslaw E. Prilepsky·Mikael Mazur·Sergei K. Turitsyn·Pedro Freire
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Abstract

We experimentally evaluated the sensing-communication trade-off from the fixed-point precision MIMO equalizer using FPGA. At 7-bit, noise floor drops 100x and angular error 63%, but the communication performance saturates while the hardware complexity rises.

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Geraldo Gomes, Rafael Vieira, Hani Kbashi, Aleksandr Donodin, Shekhar Saxena, Stylianos Sygletos, Ian Phillips, Jaroslaw E. Prilepsky, Mikael Mazur, Sergei K. Turitsyn, Pedro Freire. 2026-05-17. FPGA-Based Experimental Analysis of Fixed-Point Precision Impact on SOP Estimation in Coherent Communications Receivers. https://arxiv.org/abs/2605.17521

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