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Compromis exploration-exploitation dans la détection MIMO : algorithmie et implémentation

Abstract : A MIMO (multiple-inputs, multiple-outputs) system transmits, with multiple antennas, several data streams in the same time-frequency. The increasing number of data streams enhances the throughput, the reliability and the efficiency of such transmissions at the expense of a much more challenging reception. Indeed, it is required to separate the data streams and to counteract the inherent degradation of the transmission channel (noise and fading). This is the role of detection algorithms.Most modern detectors exploit models and estimates of the state of the transmission channel to retrieve the transmitted signals. However, these approaches struggle when the channel is too noisy, badly estimated or deviates too much from the models. Other bio-inspired detectors explore more comprehensively the possible solutions to overcome these issues at the cost of more computation and consequently degraded performance.This manuscript discusses the trade-off between exploration and exploitation and designs algorithms to mix these two strategies. For this purpose, two detectors are developed: one mixing the traditional exploitations with the bio-inspired exploration of the firefly algorithm, the other one based on a novel approach. These studies cover both the algorithmic aspects of the detectors and the hardware implementations.
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Submitted on : Monday, February 21, 2022 - 12:40:08 PM
Last modification on : Wednesday, April 27, 2022 - 4:35:22 AM
Long-term archiving on: : Sunday, May 22, 2022 - 6:40:43 PM

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  • HAL Id : tel-03582623, version 1

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Bastien Trotobas. Compromis exploration-exploitation dans la détection MIMO : algorithmie et implémentation. Traitement du signal et de l'image [eess.SP]. CentraleSupélec, 2021. Français. ⟨NNT : 2021CSUP0006⟩. ⟨tel-03582623⟩

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