TY - GEN
T1 - Fractionally spaced self-interference canceler for full-duplex communication systems
AU - Tedik, Semiha
AU - Kurt, Gunes Karabulut
PY - 2013
Y1 - 2013
N2 - Requiring a single frequency band for transmission, full-duplex (FD) systems can ideally double the spectral efficiency. However, in addition to the information signal, radiated from user's own transmit antenna generates a strong self-interference (SI). To eliminate effects of SI, active and passive cancellation techniques are used in the literature. However, omitted in these studies is the fact that the time dispersion in the SI channel may cause an error floor. In this paper, it is verified that the SI channel is time dispersive via measurements. Later, we present an analysis in order to determine the error performance. Following these results, a fractionally spaced SI canceler is proposed to eliminate the error floor. We verify our analytical results via simulations, showing that the proposed SI canceler can critically enhance the performance of FD systems.
AB - Requiring a single frequency band for transmission, full-duplex (FD) systems can ideally double the spectral efficiency. However, in addition to the information signal, radiated from user's own transmit antenna generates a strong self-interference (SI). To eliminate effects of SI, active and passive cancellation techniques are used in the literature. However, omitted in these studies is the fact that the time dispersion in the SI channel may cause an error floor. In this paper, it is verified that the SI channel is time dispersive via measurements. Later, we present an analysis in order to determine the error performance. Following these results, a fractionally spaced SI canceler is proposed to eliminate the error floor. We verify our analytical results via simulations, showing that the proposed SI canceler can critically enhance the performance of FD systems.
KW - Full-duplex systems
KW - oversampling
KW - self-interference canceler
KW - time dispersive channel
UR - https://www.scopus.com/pages/publications/84897446104
U2 - 10.1109/ISCC.2013.6755028
DO - 10.1109/ISCC.2013.6755028
M3 - Conference contribution
AN - SCOPUS:84897446104
SN - 9781479937554
T3 - Proceedings - IEEE Symposium on Computers and Communications
SP - 688
EP - 692
BT - 2013 IEEE Symposium on Computers and Communications, ISCC 2013
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th IEEE Symposium on Computers and Communications, ISCC 2013
Y2 - 7 July 2013 through 10 July 2013
ER -