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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

arXiv:2605.17521Published May 17, 20260 citations
  • eess.SP

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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