Full-Duplex Dual-Band Radio Dedicated to Flexible Radio Communications

Zhaowu Zhan 1 Guillaume Villemaud 1 Florin Hutu 1 Jean-Marie Gorce 1
1 SOCRATE - Software and Cognitive radio for telecommunications
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : This report presents the design of Full-Duplex Dual-Band radio which allows simultaneous transmission and reception in two separate spectrum fragments by combining the Full-Duplex radios and Dual-Band RF front-end. Our design employs two antennas, each one being used for simultaneous transmitting and receiving. To overcome the self-interference (SI) induced by the Full-Duplex radios, simple band pass lters (BPF) are utilized to suppress the inner SI and active analog self-interference cancellation (AASIC) method is used to cancel the inter SI. The two radio frequency (RF) signals corrupted individually by the residual SI are down-converted by the double I/Q structure. Then, the two output baseband signals are processed by the corresponding base-band receivers. We theoretically analyze and evaluate by simulation this Full-Duplex Dual-Band radio operating on the standard WiFi OFDM PHY in two separate spectrum fragments.
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Zhaowu Zhan, Guillaume Villemaud, Florin Hutu, Jean-Marie Gorce. Full-Duplex Dual-Band Radio Dedicated to Flexible Radio Communications. [Research Report] RR-8558, INRIA. 2014. ⟨hal-01018429⟩

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