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Joint optimization of Single Side Band Continuous Phase Modulation and channel coding for concatenated scheme

4 Octobre 2021


Catégorie : Post-doctorant


12 months Post Doc Fellow Position 2022
IETR Lab, SCEE Team, CentraleSupélec (campus of Rennes)

 

Single Side Band Frequency Shift Keying (SSB-FSK) is a new type of Continuous Phase Modulation (CPM), which has the very original property to directly generate a single-side band spectrum. It is a totally new CPM scheme [1], inspired from a recent discovery in quantum physics [2,3].

To exploit all its potential, we investigated the error probability based on the derivation of the minimum Euclidean distance as a function of the modulation index, pulse width, and pulse length. We explored the spectrum of SSB-FSK by quantifying its signal power bandwidth occupancy using a numerical method. These metrics have been used in different optimization methods to illustrate the full potential of this waveform alongside well-known CPM schemes [4,5]. In general, we came out with the conclusion that the SSB-FSK has the advantage of being more flexible than other CPM schemes. For instance, it has been proven that this new waveform is highly tunable, able to provide the most suitable configuration responding to the designer requirements (energy or bandwidth).

Even if the later conclusion is promising, it is not sufficient to justify the use of the waveform for a particular application, since they are based on the assumption that no channel coding is used.

Therefore, as the channel coding is an essential building block of communication systems, it is obvious that a complementary study has to be performed to jointly optimize SSB-FSK scheme and the channel encoder.

The target of this position is then to establish the full potential for digital communications using SSB-FSK when associated to a channel encoder. The idea is to be able to validate the whole transmission chain exploiting the different features of SSB-FSK. To do so, this study raises different challenges summarized in the following tasks:

· - define the optimal configurations (parameters combinations)taking into account all other transmission functions (mainly channel coding) in terms of a combined performance metric.

  • · - investigate the contribution of Artificial Intelligence to build the final SSB-FSK / channel encoder association, as the constraints for channel coding are very flexible.
  • · - design the transmission chain (powerful algorithms at the receiver side), aiming to take full advantage from the features of this new waveform; this objective includes the definition of a potential target application.
  • · -perform extensive simulations and validations to demonstrate the feasibility and the superiority of the selected scheme among others (using well-known CPM schemes)

 

Bibliography

[1] D.C. Glattli and P. Roulleau, patent WO2016124841 A1, 2016.

[2] J. Dubois, T. Jullien, F. Portier, P. Roche, A. Cavanna, Y. Jin, W. Wegscheider, P. Roulleau, D. C. Glattli, “Minimal-excitation states for electron quantum optics using levitons”, Nature 502, pp 659–663, 2013.

[3] T. Jullien, P. Roulleau, B. Roche, A. Cavanna, Y. Jin, D. C. Glattli, “Quantum tomography of an electron”, Nature 514, pp 603–607, 2014.

[4] K. Kassan, H. Farès, D. C. Glattli and Y. Louët, “Performance Vs. Spectral Properties for Single-SideBand Continuous Phase Modulation”, IEEE Transactions on Comm. (accepted), Apr. 2021.

[5] K. Kassan, H. Farès, D. C. Glattli and Y. Louët, “Simplified Receivers for Generic Binary Single SideBand CPM Using PAM Decomposition”, IEEE Access (accepted), 2021.

Topics

Digital communications, continuous phase modulation, channel coding and turbo processing

 

Please send us (in one document):

  • ·your CV along with your academic marks and records
  • ·a motivational text
  • ·some recommendation letters
  • ·Any additional documents/links that you think can show your experience

 

Hosting Laboratory:

IETR (Institute of Electronics and Telecommunications of Rennes), CNRS Lab.

Hosting Institution:

CentraleSupélec, Rennes Campus

Research Group:

SCEE (Signal, Communications and Embedded Electronics) team

Type of contract:

Temporary

Job status:

Full-time 12 months Post-doc

Offer starting date:

Early 2022

Application deadline:

November 10th, 2021

 

 

Contacts

Haïfa Farès (SCEE team, IETR Lab, CentraleSupélec): haifa.fares@centralesupelec.fr

(http://www.scee.rennes.supelec.fr/wp/)

Yves Louët (Head of SCEE team, IETR Lab, CentraleSupélec): yves.louet@centralesupelec.fr