PhD scholarship in Error Correction Coding and Shaping for Optical Communication

Technical University Of Denmark is delighted to offer a PhD position. All students regardless of citizenship are eligible to apply. The deadline for applying is September 23, 2018.

DTU Fotonik has a strong focus on optical communications and coding as well as working within all areas of photonic engineering. We are hereby announcing a PhD position at DTU Fotonik within the topic of information theory and error correction coding and shaping for optical communication, including experimental testing in the communication lab at DTU Fotonik. This project is part of collaboration between DTU Fotonik and the Institute for Communications Engineering (LNT) at the Technical University of Munich (TUM) within the EuroTech Alliance. Starting date is in autumn 2018.

Project description

We are looking for a candidate to work on error correction coding and shaping for high-speed optical communication. The focus will be on forward error-correction (FEC), as well as the combination of FEC with (probabilistic) shaping.

In the project, advanced coding shall be designed and developed for high-speed optical channels, possibly including regenerative channels. The project involves the interaction and combination of error-correcting coding and pre-coding/shaping. Aspects such as complexity and energy consumption play a central role in the choice of algorithms.

Different coding structures such as staircase codes, block codes, generalized product codes etc. will be studied and compared, including the analysis of error-floors. Algorithms for fast decoding with hard decisions and low-resolution soft-decision will be devised, analysed and simulated. Selected codes will be combined with probabilistic shaping.

The PhD project will be associated with the research centre of excellence SPOC at DTU Fotonik and will be in close collaboration with activities within the flagship activities on information theory, capacity and advanced coding. The PhD project will involve both theoretical and experimental studies and joint experiments with other SPOC team members, e.g. experimentally testing the novel coding techniques in the optical communication lab at DTU Fotonik. The project will be part of collaboration with Prof. Gerhard Kramer, LNT, TUM.


Candidates should have a master’s degree in engineering or a similar degree with an academic level equivalent to the master’s degree in engineering. Good communication skills in written and spoken English are a must.

Approval and Enrolment

The scholarship for the PhD degree is subject to academic approval, and the candidate will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see the DTU PhD Guide.


The assessment of the applicants will be made by Professor Sren Forchhammer.

We offer

DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

Salary and appointment terms

The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 3 years.

Supervisors and further information

Further information may be obtained from Professor Sren Forchhammer;

You can read more about DTU Fotonik on

Application procedure

Please submit your online application no later than 23 September 2018 (local time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link “Apply online,” complete the online application form, and attach all your materials in English in one PDF file. The file must include:
- Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here)

Candidates may apply prior to obtaining their MSc degree, but cannot begin before having received it.

Applications and enclosures received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.

DTU Fotonik has 210 employees with competences in optics and is one of the largest centers in the world based solely on research in photonics. Research is performed within optical sensors, lasers, LEDs, photovoltaics, ultra-high speed optical transmission systems, communication technology, bio-photonics, nano-optics and quantum photonics.


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