Section: New Results

Flexible Radio Front-End

The contributions on hardware design are twofold. First, the development of a Full-Duplex architecture for OFDM systems. Second, a proposal of a Wake-Up scheme for home networking with reduced power consumption.

Zhan et al. [23] focused on the study of active analog self-interference cancellation (AASIC) techniques in full-duplex OFDM systems. This original approach aims at proposing a cancellation technique at RF level for wideband systems. A theoretical study confronted to simulations was proposed with a particular emphasis on the channel estimation of the interfering signal. This study was completed with an analysis on the phase noise and the thermal noise impact.

Khoumeri et al. [28] proposed radio architectures for allowing energy savings by letting devices to switch off part of the transmission components when they are not in use. Based on classical WiFi systems, the proposed architecture offers the ability to use a conventional emitter, using only a particular subcarrier fingerprint to identify the node to wake-up, hence avoiding a high level of false wake-up.