Learning Physical-Layer Communication with Quantized Feedback

Song, Jinxiang, 1995 (författare): Chalmers tekniska högskola,Chalmers University of Technology

Peng, Bile, 1985 (författare): Chalmers tekniska högskola,Chalmers University of Technology

Wymeersch, Henk, 1976 (författare): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2020
2020
Engelska.
Ingår i: IEEE Transactions on Communications. - 0090-6778 .- 1558-0857. ; 68:1, s. 645-653

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Abstract Ämnesord

Stäng

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 nonstationary 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.

TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)

Av författaren/redakt...: Song, Jinxiang, ...; Peng, Bile, 1985; Häger, Christian ...; Wymeersch, Henk, ...; Sahai, Anant

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Telekommunikatio ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Signalbehandling

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