Publications de Christoph Studer

Artificial Intelligence for 5G and Beyond 5G: Implementations, Algorithms, and Optimizations

Christoph Studer, Andreas Peter Burg, Chuan Zhang

This Special Issue of the IEEE Journal on Emerging and Selected Topics in Circuits and Systems (JETCAS) is dedicated to demonstrating the latest research progress on artificial intelligence for 5G and beyond 5G (B5G) with respect to implementations, algori ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Neural-Network Optimized 1-bit Precoding for Massive MU-MIMO

Christoph Studer, Alexios Konstantinos Balatsoukas Stimming

Base station (BS) architectures for massive multi-user (MU) multiple-input multiple-output (MIMO) wireless systems are equipped with hundreds of antennas to serve tens of users on the same time-frequency channel. The immense number of BS antennas incurs hi ...

IEEE2019

Deep Unfolding for Communications Systems: A Survey and Some New Directions

Christoph Studer, Alexios Konstantinos Balatsoukas Stimming

Deep unfolding is a method of growing popularity that fuses iterative optimization algorithms with tools from neural networks to efficiently solve a range of tasks in machine learning, signal and image processing, and communication systems. This survey sum ...

IEEE2019

Data Mapping for Unreliable Memories

Christoph Studer, Andreas Peter Burg, Georgios Karakonstantis

Future digital signal processing (DSP) systems must provide robustness on algorithm and application level to the presence of reliability issues that come along with corresponding implementations in modern semiconductor process technologies. In this paper, ...

2012

Layered Detection and Decoding in MIMO Wireless Systems

Christoph Studer, Andreas Peter Burg, Nicholas Alexander Preyss

Iterative detection and decoding (IDD) in multiple-input multiple-output (MIMO) wireless systems is known to achieve near channel capacity. The high computational complexity of IDD, however, poses signiﬁcant challenges for practical implementations (in ter ...

IEEE2012

VLSI Design of Approximate Message Passing for Signal Restoration and Compressive Sensing

Christoph Studer, Andreas Peter Burg

2012

System-level implications of residual transmit-RF impairments in MIMO systems

Christoph Studer, Andreas Peter Burg

2011

Area, throughput, and energy-efficiency trade-offs in the VLSI implementation of LDPC decoders

Yusuf Leblebici, Alessandro Cevrero, Christoph Studer, Andreas Peter Burg

2011

A 15.8 pJ/bit/iter quasi-cyclic LDPC decoder for IEEE 802.11n in 90 nm CMOS

Pascal Andreas Meinerzhagen, Christoph Studer, Andreas Peter Burg

We present a low-power quasi-cyclic (QC) low density parity check (LDPC) decoder that meets the throughput requirements of the highest-rate (600 Mbps) modes of the IEEE 802.11n WLAN standard. The design is based on the layered offset-min-sum algorithm and ...

IEEE2010

VLSI Implementation of a Low-Complexity LLL Lattice Reduction Algorithm for MIMO Detection

Christoph Studer, Andreas Peter Burg

Lattice-reduction (LR)-aided successive interference cancellation (SIC) is able to achieve close-to optimum error-rate performance for data detection in multiple-input multiple-output (MIMO) wireless communication systems. In this work, we propose a hardwa ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

MIMO transmission with residual transmit-RF impairments

Christoph Studer, Andreas Peter Burg

IEEE2010

Area- and throughput-optimized VLSI architecture of sphere decoding

Christoph Studer, Andreas Peter Burg

IEEE2010

The effect of unreliable LLR storage on the performance of MIMO-BICM

Christoph Studer, Andreas Peter Burg

IEEE2010

Soft-output sphere decoding: Algorithms and VLSI implementation

Christoph Studer, Andreas Peter Burg

Multiple-input multiple-output (MIMO) detection algorithms providing soft information for a subsequent channel decoder pose significant implementation challenges due to their high computational complexity. In this paper, we show how sphere decoding can be ...

2008

Configurable High-Throughput Decoder Architecture for Quasi-Cyclic LDPC Codes

Christoph Studer, Andreas Peter Burg, Nicholas Alexander Preyss

We describe a fully reconfigurable low-density parity check (LDPC) decoder for quasi-cyclic (QC) codes. The proposed hardware architecture is able to decode virtually any QC-LDPC code that fits into the allocated memories while achieving high decoding thro ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

VLSI implementation of the list sphere algorithm

Matthieu Philippe Emmanuel Zellweger, Christoph Studer, Andreas Peter Burg

Sphere decoding (SD) is widely considered as one of the most promising detection schemes for multiple-input multiple-output (MIMO) communication systems. The recently proposed list sphere-decoding (LSD) algorithm is an extension of the original SD algorith ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

Soft-output sphere decoding: Performanceand implementation aspects

Christoph Studer, Andreas Peter Burg

Multiple-input multiple-output (MIMO) detection algorithms providing soft information for a subsequent channel decoder pose significant implementation challenges due to their high computational complexity. In this paper, we show how sphere decoding can be ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

Advanced receiver algorithms for MIMO wireless communications

Christoph Studer, Andreas Peter Burg

We describe the VLSI implementation of MIMO detectors that exhibit close-to optimum error-rate performance, but still achieve high throughput at low silicon area. In particular algorithms and VLSI architectures for sphere decoding (SD) and K-best detection ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

A unification of ML-optimal tree-search decoders

Christoph Studer, Andreas Peter Burg

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

Superlinear Physical Performances in a SWARM-BOT

Francesco Mondada, André Guignard, Dario Floreano, Stéphane Magnenat, Michael Bonani, Christoph Studer

A swarm-bot is a robotic entity built of several autonomous mobile robots (called s-bots) physically connected together. This form of collective robotics exploits robot interactions both at the behavioral and physical levels. The goal of this paper is to a ...

2005