Search Results for author: Sebastian Cammerer

Found 17 papers, 10 papers with code

Learning Radio Environments by Differentiable Ray Tracing

no code implementations30 Nov 2023 Jakob Hoydis, Fayçal Aït Aoudia, Sebastian Cammerer, Florian Euchner, Merlin Nimier-David, Stephan ten Brink, Alexander Keller

Ray tracing (RT) is instrumental in 6G research in order to generate spatially-consistent and environment-specific channel impulse responses (CIRs).

Graph Neural Networks for Channel Decoding

1 code implementation29 Jul 2022 Sebastian Cammerer, Jakob Hoydis, Fayçal Aït Aoudia, Alexander Keller

In this work, we propose a fully differentiable graph neural network (GNN)-based architecture for channel decoding and showcase a competitive decoding performance for various coding schemes, such as low-density parity-check (LDPC) and BCH codes.

Deep Learning-Based Synchronization for Uplink NB-IoT

1 code implementation22 May 2022 Fayçal Aït Aoudia, Jakob Hoydis, Sebastian Cammerer, Matthijs Van Keirsbilck, Alexander Keller

We propose a neural network (NN)-based algorithm for device detection and time of arrival (ToA) and carrier frequency offset (CFO) estimation for the narrowband physical random-access channel (NPRACH) of narrowband internet of things (NB-IoT).

Benchmarking

Automorphism Ensemble Decoding of Reed-Muller Codes

1 code implementation14 Dec 2020 Marvin Geiselhart, Ahmed Elkelesh, Moustafa Ebada, Sebastian Cammerer, Stephan ten Brink

Reed-Muller (RM) codes are known for their good maximum likelihood (ML) performance in the short block-length regime.

Information Theory Information Theory

Iterative Detection and Decoding of Finite-Length Polar Codes in Gaussian Multiple Access Channels

no code implementations2 Dec 2020 Moustafa Ebada, Sebastian Cammerer, Ahmed Elkelesh, Marvin Geiselhart, Stephan ten Brink

We consider the usage of finite-length polar codes for the Gaussian multiple access channel (GMAC) with a finite number of users.

Information Theory Information Theory

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

Deep Learning-based Polar Code Design

no code implementations26 Sep 2019 Moustafa Ebada, Sebastian Cammerer, Ahmed Elkelesh, Stephan ten Brink

In this work, we introduce a deep learning-based polar code construction algorithm.

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-in-the-Loop: Genetic Optimization-based LDPC Code Design

1 code implementation7 Mar 2019 Ahmed Elkelesh, Moustafa Ebada, Sebastian Cammerer, Laurent Schmalen, Stephan ten Brink

Moreover, GenAlg can be used to design LDPC codes with the aim of reducing decoding latency and complexity, leading to coding gains of up to $0. 325$ dB and $0. 8$ dB at BLER of $10^{-5}$ for both AWGN and Rayleigh fading channels, respectively, when compared to state-of-the-art short LDPC codes.

Information Theory Information Theory

Decoder-tailored Polar Code Design Using the Genetic Algorithm

1 code implementation28 Jan 2019 Ahmed Elkelesh, Moustafa Ebada, Sebastian Cammerer, Stephan ten Brink

We propose a new framework for constructing polar codes (i. e., selecting the frozen bit positions) for arbitrary channels, and tailored to a given decoding algorithm, rather than based on the (not necessarily optimal) assumption of successive cancellation (SC) decoding.

Playing the Game of 2048

Genetic Algorithm-based Polar Code Construction for the AWGN Channel

1 code implementation19 Jan 2019 Ahmed Elkelesh, Moustafa Ebada, Sebastian Cammerer, Stephan ten Brink

We propose a new polar code construction framework (i. e., selecting the frozen bit positions) for the additive white Gaussian noise (AWGN) channel, tailored to a given decoding algorithm, rather than based on the (not necessarily optimal) assumption of successive cancellation (SC) decoding.

Playing the Game of 2048

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

On Deep Learning-Based Channel Decoding

2 code implementations26 Jan 2017 Tobias Gruber, Sebastian Cammerer, Jakob Hoydis, Stephan ten Brink

We revisit the idea of using deep neural networks for one-shot decoding of random and structured codes, such as polar codes.

Information Theory Information Theory

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