Hardware Implementation of Soft Mapper/Demappers in Iterative EP-based Receivers - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Hardware Implementation of Soft Mapper/Demappers in Iterative EP-based Receivers

Résumé

This paper presents a comprehensive study and implementations onto FPGA device of an Expectation Propagation (EP)-based receiver for QPSK, 8-PSK, and 16-QAM. To the best of our knowledge, this is the first for this kind of receiver. The receiver implements a Frequency Domain (FD) Self-Iterated Linear Equalizer (SILE), where EP is used to approximate the true posterior distribution of the transmitted symbols with a simpler distribution. Analytical approximations for the EP feedback generation process and the three constellations are applied to lessen the complexity of the soft mapper/demapper architectures. The simulation results demonstrate that the fixed-point version performs comparably to the floating-point. Moreover, implementation results show the efficiency in terms of FPGA resource usage of the proposed architecture.
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hal-04607396 , version 1 (11-06-2024)

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Ian Fischer Schilling, Serdar Sahin, Camille Leroux, Antonio Maria Cipriano, Christophe Jego. Hardware Implementation of Soft Mapper/Demappers in Iterative EP-based Receivers. (SiPS 2024) 2024 IEEE International Workshop on Signal Processing Systems, Nov 2024, Cambridge, United States. ⟨hal-04607396⟩
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