Search Results for author: Sebastian Dörner

Found 7 papers, 1 papers with code

Deep Reinforcement Learning for mmWave Initial Beam Alignment

no code implementations17 Feb 2023 Daniel Tandler, Sebastian Dörner, Marc Gauger, Stephan ten Brink

We investigate the applicability of deep reinforcement learning algorithms to the adaptive initial access beam alignment problem for mmWave communications using the state-of-the-art proximal policy optimization algorithm as an example.

reinforcement-learning Reinforcement Learning (RL)

Improving Triplet-Based Channel Charting on Distributed Massive MIMO Measurements

no code implementations20 Jun 2022 Florian Euchner, Phillip Stephan, Marc Gauger, Sebastian Dörner, Stephan ten Brink

The objective of channel charting is to learn a virtual map of the radio environment from high-dimensional CSI that is acquired by a multi-antenna wireless system.

Dimensionality Reduction

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

Towards Practical Indoor Positioning Based on Massive MIMO Systems

no code implementations28 May 2019 Mark Widmaier, Maximilian Arnold, Sebastian Dörner, Sebastian Cammerer, Stephan ten Brink

We showcase the practicability of an indoor positioning system (IPS) solely based on Neural Networks (NNs) and the channel state information (CSI) of a (Massive) multiple-input multiple-output (MIMO) communication system, i. e., only build on the basis of data that is already existent in today's systems.

On Recurrent Neural Networks for Sequence-based Processing in Communications

1 code implementation24 May 2019 Daniel Tandler, Sebastian Dörner, Sebastian Cammerer, Stephan ten Brink

In this work, we analyze the capabilities and practical limitations of neural networks (NNs) for sequence-based signal processing which can be seen as an omnipresent property in almost any modern communication systems.

Benchmarking Decoder

Enabling FDD Massive MIMO through Deep Learning-based Channel Prediction

no code implementations8 Jan 2019 Maximilian Arnold, Sebastian Dörner, Sebastian Cammerer, Sarah Yan, Jakob Hoydis, Stephan ten Brink

A major obstacle for widespread deployment of frequency division duplex (FDD)-based Massive multiple-input multiple-output (MIMO) communications is the large signaling overhead for reporting full downlink (DL) channel state information (CSI) back to the basestation (BS), in order to enable closed-loop precoding.

Deep Learning-Based Communication Over the Air

no code implementations11 Jul 2017 Sebastian Dörner, Sebastian Cammerer, Jakob Hoydis, Stephan ten Brink

End-to-end learning of communications systems is a fascinating novel concept that has so far only been validated by simulations for block-based transmissions.

Transfer Learning

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