Search Results for author: Fayçal Ait Aoudia

Found 19 papers, 3 papers with code

Waveform Learning for Reduced Out-of-Band Emissions Under a Nonlinear Power Amplifier

no code implementations14 Jan 2022 Dani Korpi, Mikko Honkala, Janne M. J. Huttunen, Fayçal Ait Aoudia, Jakob Hoydis

In particular, we consider a scenario where the transmitter power amplifier is operating in a nonlinear manner, and ML is used to optimize the waveform to minimize the out-of-band emissions.

Learning OFDM Waveforms with PAPR and ACLR Constraints

no code implementations21 Oct 2021 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis, Jean-Marie Gorce

An attractive research direction for future communication systems is the design of new waveforms that can both support high throughputs and present advantageous signal characteristics.

Waveform Learning for Next-Generation Wireless Communication Systems

no code implementations2 Sep 2021 Fayçal Ait Aoudia, Jakob Hoydis

We propose a learning-based method for the joint design of a transmit and receive filter, the constellation geometry and associated bit labeling, as well as a neural network (NN)-based detector.

Machine Learning-enhanced Receive Processing for MU-MIMO OFDM Systems

no code implementations30 Jun 2021 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis, Jean-Marie Gorce

Machine learning (ML) can be used in various ways to improve multi-user multiple-input multiple-output (MU-MIMO) receive processing.

BIG-bench Machine Learning

End-to-End Learning of OFDM Waveforms with PAPR and ACLR Constraints

no code implementations30 Jun 2021 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis, Jean-Marie Gorce

Orthogonal frequency-division multiplexing (OFDM) is widely used in modern wireless networks thanks to its efficient handling of multipath environment.

End-to-end Waveform Learning Through Joint Optimization of Pulse and Constellation Shaping

no code implementations29 Jun 2021 Fayçal Ait Aoudia, Jakob Hoydis

As communication systems are foreseen to enable new services such as joint communication and sensing and utilize parts of the sub-THz spectrum, the design of novel waveforms that can support these emerging applications becomes increasingly challenging.

Trimming the Fat from OFDM: Pilot- and CP-less Communication with End-to-end Learning

no code implementations20 Jan 2021 Fayçal Ait Aoudia, Jakob Hoydis

Orthogonal frequency division multiplexing (OFDM) is one of the dominant waveforms in wireless communication systems due to its efficient implementation.

Toward a 6G AI-Native Air Interface

no code implementations15 Dec 2020 Jakob Hoydis, Fayçal Ait Aoudia, Alvaro Valcarce, Harish Viswanathan

Each generation of cellular communication systems is marked by a defining disruptive technology of its time, such as orthogonal frequency division multiplexing (OFDM) for 4G or Massive multiple-input multiple-output (MIMO) for 5G.

Machine Learning for MU-MIMO Receive Processing in OFDM Systems

no code implementations15 Dec 2020 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis, Jean-Marie Gorce

Machine learning (ML) starts to be widely used to enhance the performance of multi-user multiple-input multiple-output (MU-MIMO) receivers.

BIG-bench Machine Learning

End-to-end Learning for OFDM: From Neural Receivers to Pilotless Communication

no code implementations11 Sep 2020 Fayçal Ait Aoudia, Jakob Hoydis

The first comes from a neural network (NN)-based receiver operating over a large number of subcarriers and OFDM symbols which allows to significantly reduce the number of orthogonal pilots without loss of bit error rate (BER).

Joint Learning of Probabilistic and Geometric Shaping for Coded Modulation Systems

no code implementations10 Apr 2020 Fayçal Ait Aoudia, Jakob Hoydis

We introduce a trainable coded modulation scheme that enables joint optimization of the bit-wise mutual information (BMI) through probabilistic shaping, geometric shaping, bit labeling, and demapping for a specific channel model and for a wide range of signal-to-noise ratios (SNRs).

Deep HyperNetwork-Based MIMO Detection

no code implementations7 Feb 2020 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis

Optimal symbol detection for multiple-input multiple-output (MIMO) systems is known to be an NP-hard problem.

Trainable Communication Systems: Concepts and Prototype

no code implementations29 Nov 2019 Sebastian Cammerer, Fayçal Ait Aoudia, Sebastian Dörner, Maximilian Stark, Jakob Hoydis, Stephan ten Brink

We consider a trainable point-to-point communication system, where both transmitter and receiver are implemented as neural networks (NNs), and demonstrate that training on the bit-wise mutual information (BMI) allows seamless integration with practical bit-metric decoding (BMD) receivers, as well as joint optimization of constellation shaping and labeling.

Information Theory Signal Processing Information Theory

Joint Learning of Geometric and Probabilistic Constellation Shaping

no code implementations18 Jun 2019 Maximilian Stark, Fayçal Ait Aoudia, Jakob Hoydis

In this work, we show how autoencoders can be leveraged to perform probabilistic shaping of constellations.

Towards Hardware Implementation of Neural Network-based Communication Algorithms

no code implementations19 Feb 2019 Fayçal Ait Aoudia, Jakob Hoydis

There is a recent interest in neural network (NN)-based communication algorithms which have shown to achieve (beyond) state-of-the-art performance for a variety of problems or lead to reduced implementation complexity.

Model-free Training of End-to-end Communication Systems

no code implementations14 Dec 2018 Fayçal Ait Aoudia, Jakob Hoydis

The idea of end-to-end learning of communication systems through neural network-based autoencoders has the shortcoming that it requires a differentiable channel model.

Deep Reinforcement Learning Autoencoder with Noisy Feedback

1 code implementation12 Oct 2018 Mathieu Goutay, Fayçal Ait Aoudia, Jakob Hoydis

However, this approach requires feedback of real-valued losses from the receiver to the transmitter during training.

Information Theory Information Theory

End-to-End Learning of Communications Systems Without a Channel Model

1 code implementation6 Apr 2018 Fayçal Ait Aoudia, Jakob Hoydis

The idea of end-to-end learning of communications systems through neural network -based autoencoders has the shortcoming that it requires a differentiable channel model.

reinforcement-learning Reinforcement Learning (RL)

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