In this talk, full-duplex (FD) cellular networks are considered in which a FD base station (BS) simultaneously supports a set of half-duplex (HD) downlink (DL) users and a set of HD uplink (UL) users. The transmitter and the receiver of the BS are equipped with reconfigurable antennas, each of which can choose its transmit or receive mode from several preset modes. Under the no self-interference assumption arisen from FD operation at the BS, the sum degrees of freedom (DoF) of FD cellular networks is investigated for both no channel state information at the transmit side (CSIT) and partial CSIT. In particular, the sum DoF is completely characterized for the no CSIT model and an achievable sum DoF is established for the partial CSIT model, which improves the sum DoF of the conventional HD cellular networks. For both the no CSIT and partial CSIT models, the results show that the FD BS with reconfigurable antennas can double the sum DoF even in the presence of user-to-user interference as both the numbers of DL and UL users and preset modes increase. It is further demonstrated that such DoF improvement indeed yields the sum rate improvement at the finite and operational signal-to-noise ratio regime.
Sang-Woon Jeon is an Assistant Professor in the Department of Information and Communication Engineering at Andong National University since 2013. He received the B.S. and M.S. degrees in Electrical Engineering from Yonsei University, Seoul, Korea in 2003 and 2006, respectively, and the Ph.D. degree in Electrical Engineering from Korea Advanced Institute of Science and Technology (KAIST), Deajeon, Korea in 2011. From 2011 to 2013, he was a postdoctoral associate in the School of Computer and Communication Sciences at Ecole Polytechnique Federale, Lausanne (EPFL), Switzerland. His research interests include network information theory and its application to wireless communications.
Dr. Jeon received the Best Paper Award of the IEEE International Conference on Communications in 2015 and the Best Thesis Award from the EE Department at KAIST in 2012.