TY - GEN
T1 - A signal-space analysis of spatial self-interference isolation for full-duplex wireless
AU - Everett, Evan
AU - Sabharwal, Ashutosh
PY - 2014
Y1 - 2014
N2 - The challenge of full-duplex wireless communication is self-interference received directly from the transmit antennas and backscattered from nearby objects. Spatial isolation of the receive antennas from the transmit antennas can mitigate self-interference, but may cause the spatial resources of the channel to be under-utilized, sacrificing spatial multiplexing performance. We present an analysis of spatial isolation of self-interference for full-duplex base stations, which leverages the antenna-theorybased channel model of Poon et. al.We characterize the scattering conditions under which spatial isolation can enable a degrees-of-freedom gain over half-duplex, and show that the gain is inversely proportional to the overlap between the backscattering intervals (set angles of departure/arrival of backscattered self-interference), and the forward scattering intervals (set of angles of departure/arrival to/from the intended users).
AB - The challenge of full-duplex wireless communication is self-interference received directly from the transmit antennas and backscattered from nearby objects. Spatial isolation of the receive antennas from the transmit antennas can mitigate self-interference, but may cause the spatial resources of the channel to be under-utilized, sacrificing spatial multiplexing performance. We present an analysis of spatial isolation of self-interference for full-duplex base stations, which leverages the antenna-theorybased channel model of Poon et. al.We characterize the scattering conditions under which spatial isolation can enable a degrees-of-freedom gain over half-duplex, and show that the gain is inversely proportional to the overlap between the backscattering intervals (set angles of departure/arrival of backscattered self-interference), and the forward scattering intervals (set of angles of departure/arrival to/from the intended users).
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U2 - 10.1109/ISIT.2014.6874915
DO - 10.1109/ISIT.2014.6874915
M3 - Conference contribution
AN - SCOPUS:84906535758
SN - 9781479951864
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 661
EP - 665
BT - 2014 IEEE International Symposium on Information Theory, ISIT 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE International Symposium on Information Theory, ISIT 2014
Y2 - 29 June 2014 through 4 July 2014
ER -