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Energy Efficient Architectures and Signal Processing
The dramatic increase in the number of mobile consumer devices such as digital cameras, mobile phones and laptops has been made possible by the advances in electronics' energy efficiency.
However, new applications are constantly being invented and old ones are updated, which has lead to an ever-increasing demand for computational power, which results in higher power consumption of devices. As battery technologies advance only very slowly, improving the efficiency of computations has become the only viable alternative: more calculations need to be done with less power.
Our research on energy efficiency concentrates on this problem from the aspect of signal processing, which is required practically in all mobile devices. Improving the energy efficiency of signal processing systems cannot be done solely in software or hardware, but requires considering both, as well as the interface between.
Besides the work of improving the energy efficiency of signal processing, our group is also interested in hardware-software development tool chains with a focus on design automation. This work is done in close cooperation with national and international partners.
- Signal processing on multiprocessors
- High-level specification with dataflow
- Signal processing on Transport Triggered Architecture processors (TTAs)
- Efficient scheduling of signal processing computations
Related international projects
Some recent publications
Tretter A, Boutellier J, Guthrie J, Schor L & Thiele L (2015) Executing dataflow actors as Kahn processes. Proc. International Conference on Embedded Software (EMSOFT), ACM, accepted.
Boutellier J, Ersfolk J, Lilius J, Mattavelli M, Roquier G & Silvén O (2015) Actor Merging for Dataflow Process Networks. IEEE Transactions on Signal Processing, 63(10):2496-2508.
Hautala I, Boutellier J, Hannuksela J & Silvén O (2014) Programmable Low-Power Multicore Coprocessor Architecture for HEVC/H.265 In-Loop Filtering. IEEE Transactions on Circuits and Systems for Video Technology, 25(7):1217-1230.
Ghazi A, Boutellier J, Silvén O, Bhattacharyya S, Shahabuddin S, Juntti M & Anttila L (2015) Model-based design and implementation of an adaptive digital predistortion filter. Proc. IEEE International Workshop on Signal Processing Systems (SiPS), accepted.
Nyländen T, Kultala H, Boutellier J, Hautala I, Hannuksela J & Silvén O (2015) Programmable data parallel accelerator for computer vision. Proc. 3rd IEEE Global Conference on Signal and Information Processing, accepted.
Boutellier J & Ghazi A (2015) Multicore execution of dynamic dataflow programs on the Distributed Application Layer. Proc. IEEE Global Conference on Signal and Information Processing (GlobalSIP), accepted.