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- W2989440423 abstract "Data-driven optimization of transmitters and receivers can reveal new modulation and detection schemes and enable physical-layer communication over unknown channels. Previous work has shown that practical implementations of this approach require a feedback signal from the receiver to the transmitter. In this paper, we study the impact of quantized feedback on data-driven learning of physical-layer communication. A novel quantization method is proposed, which exploits the specific properties of the feedback signal and is suitable for non-stationary signal distributions. The method is evaluated for linear and nonlinear channels. Simulation results show that feedback quantization does not appreciably affect the learning process and can lead to similar performance as compared to the case where unquantized feedback is used for training, even with 1-bit quantization. In addition, it is shown that learning is surprisingly robust to noisy feedback where random bit flips are applied to the quantization bits." @default.
- W2989440423 created "2019-11-22" @default.
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- W2989440423 date "2020-01-01" @default.
- W2989440423 modified "2023-09-27" @default.
- W2989440423 title "Learning Physical-Layer Communication With Quantized Feedback" @default.
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- W2989440423 doi "https://doi.org/10.1109/tcomm.2019.2951563" @default.
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