Algorithmes, Énergie, Sciences et génie, Technologies de l’information et des communications (TIC), Technologies disponibles, Technologies propres, Télécommunications, Traitements du signal


Augmenter le débit d’information, réduire considérablement l’énergie consommée et la complexité avec moins de dégradation des performances

– Description en anglais seulement –

The need of advanced methods and technologies in wireless communications

  • The fundamental goal for wireless communications research is to attain the best utilization of the radio spectrum (i.e. high spectral efficiency).
  • This is due to the growth in demand for data caused by the increased number of networked devices and the quality and types of wireless services.
  • In recent years, energy consumption has become a critical factor for the design of wireless networks.
  • Energy efficient schemes have the potential to reduce the energy cost and carbon footprint in high power cellular networks and extend the battery of mobile devices.
  • Wireless technologies are being utilized in a variety of new scenarios which require low energy consumption such as wireless body area networks (WBANs) and wireless sensor networks (WSNs).
  • Innovative schemes need to be developed for future wireless technologies that achieve both high data rates and energy efficiency.

New efficient method and system for high data rate transmission

  • The proposed technology explores a new domain within the network (spreading code domain) with the goal of enhancing the data rate without increasing the system’s complexity by using a new dimension to map the transmitted bits.
  • It is a new efficient scheme for high data rate transmission called Code Modulation- Spread Spectrum (CM-SS).
  • This scheme based on spread spectrum quadrature shift keying (SS-QPSK) modulation can achieve higher data rates with lower energy consumption than the conventional system while being simple to implement.
  • In the CM-SS, the spreading code is used to spread and to map the transmitted bits. With the transmitter using an elegant mapping method only half of the bits are required to be physically transmitted over the channel. At the receiver side, the transmitted symbols are demodulated using the inverse process.
  • The result is increased in the system’s throughput, decreased energy consumption, and a system that is easy to implement.
  • The advantages of the spreading spectrum modulation are maintained in the proposed CM-SS scheme.
  • Technology developed by Prof. Georges Kaddoum  (Department of Electrical Engineering, École de technologie supérieure (ÉTS), University of Quebec, Canada)

Competitive advantages

The analysis shows that compared to the traditional SS system, the technology would allow:

  • Increasing the throughput.
  • Reducing by the transmitted energy.
  • Reducing the complexity.
  • Less performance degradation.
  • Avoiding the need of switching between multiple antennas.

Market applications

Potential applications in wireless networks with limited energy, for example in:

  • Military communication systems.
  • Wireless sensor networks (WSN).
  • Wireless body area networks (WBAN).
  • Wireless personal area networks (WPAN).
  • Mobile radio communication systems.
  • Satellite communications.
  • Vehicular communications.
  • Smart grid, smart homes, and smart cities.

Business opportunity 


If you are interested by this technology, please contact :
Dareen Toumi, Technology Analyst, Engineering, (514) 618-9297


École de Technologie supérieure (ÉTS)

Main inventors


Georges Kaddoum, Professor, Electric Engineering Department

Prof. Kaddoum is the recipient the “Research Excellence Award of the Université du Quebec, 2018″, and the “Research Excellence Award-emerging researcher” from ÉTS, 2019. Additionally, he is a co-recipient of the Best Papers Awards of the IEEE PIMRC 2017, and the IEEE WiMob 2014. Moreover, he received the “Exemplary Reviewer Award” from IEEE trans. on comm. twice in 2015 and 2017. He is currently serving as an associate editor for the IEEE trans. on information forensics and security and the IEEE comm. letters. Prof. Kaddoum hold a Canada research Chair on future wireless IoT networks. He published over 200 journal and conference papers and two pending patents. He received his Ph.D. with honor in signal processing and telecommunications from the National Institute of Applied Sciences (INSA), Toulouse, France, 2009.