LP100 - Optimization of 100 Gb/s near field wireless transmitters under consideration of power limits


Prof. Dr.-Ing. Gerd Ascheid

RWTH Aachen University

Fakultät Elektrotechnik und Informationstechnik

Lehrstuhl für Integrierte Systeme der Signalverarbeitung

Prof. Dr. Renato Negra

RWTH Aachen University

Fakultät für Elektro- und Informationstechnik

Chair of High Frequency Electronics

Prof. Dr.-Ing. Norbert Wehn

University of Kaiserslautern

Fachbereich Elektrotechnik und Informationstechnik


Focus of the project is the scientific investigation of near field wireless transmitters working on a carrier frequency of 60GHz and a bandwidth between 1 and 10 GHz. For a given energy per information bit, the overall energy consumption increases with the data rate. When targeting data rates in the region of 100 Gb/s, the overall system's power consumption gets a serious problem. Therefore, within this project transceivers are optimized to achieve a maximum data rate under a strict overall energy constraint which means the transmit energy as well as processing energy is limited for a given data rate.

To achieve the goals of the project suitable high frequency transmission schemes have to be investigated jointly with energy efficient architectures and their implementations in a true cross-layer approach. Main challenges are the investigation of methods to reach data rates of 100 Gb/s and the partitioning of analog and digital signal processing tasks. They have to be capable of supporting the required throughput and at the same time fulfill the overall energy constraints.
Even though the focus of the project at first is on 60 GHz systems, the investigations will later on be extended to 120 GHz. Implementations in this frequency domain are not planned in the first instance.

The key target of the project is the design of innovative high frequency architectures, mixed-signal architectures and digital signal processing architectures maintaining very high energy, bandwidth and implementation efficiency. To reach these goals, several aspects must be considered. They comprise higher order modulation, multiple antenna systems, digitally adjusted and switched analog signal processing, compensation of the impact of hardware imperfection on the signals as well as energy efficient implementations. Key parameters for all concepts are the ability to achieve highest data rates and their impact on the overall energy consumption. Therefore energy and power estimation is another important topic of the research project.

There are close interrelations between the requirements on high frequency, mixed signal and digital side from a communications and implementation point of view. The intensive interdisciplinary collaboration of researchers from the different fields is therefore essential to achieve the ambitious goals.