Massice IoT applications are characterized by an expected high density of connected devices, small data payloads, as well as stringent constraints on the device energy consumption and cost. Maximizing the spectral efficiency of an IoT network is a key pre-requisite for providing massive connectivity. At the link level, it can take advantage of powerful error control codes such as Non-Binary (NB) codes. At the system level, reducing “meta-data” throughput, i.e., exchange of information linked to signaling, synchronization and identification is the new paradigm of massive IoT network. This requires encompassing those functions in a single well protected frame.
In this talk, Dr. Boutillon will present a new coded modulation scheme based on the association of a non-binary code combined with a Cyclic Code Shift Keying (CCSK) modulation. This new coded modulation scheme, called Quasi Cyclic Short Packet (QCSP), provides several advantages compared to state-of-the-art waveforms: it avoids the use of a preamble for detection and synchronization and allows transmission of small payload at Signal-to-Noise Ratios (SNR) far below 0 dB with performance close to the theoretical limit. Some real-time experimentation results are shown for the mobile channel and a maritime channel. Simulation of multi-users transmission shows that QCSP frame are an efficient solution for the un-slotted aloha channel.
Emmanuel Boutillon received an engineering diploma from the Telecom Paris Tech, Paris, France in 1990. In 1991, he worked as an assistant professor in the Ecole Multinationale Supérieure des Télécommunications in Africa (Dakar). In 1992, he joined Telecom Paris Tech as a research engineer where he conducted research in the field of VLSI for digital communications. He obtained his Ph.D in 1995. In 1998, he spent a sabbatical year at the University of Toronto, Ontario, Canada. In 2000, he moved to the University of Bretagne Sud as a professor. In 2011, he had a sabbatical year at INICTEL-UNI, Lima (Peru).
His research interests are on the interactions between algorithm and architecture in the field of wireless communications and high-speed signal processing. In particular, he works on error control codes and demodulation algorithms.