Capacity of the Gaussian Two-Hop Full-Duplex Relay Channel with Self-Interference

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Zlatanov N, Sippel E, Jamali V, Schober R
Publisher: IEEE
Publication year: 2016
Language: English


Abstract

In this paper, we investigate the capacity of the Gaussian two-hop
full-duplex (FD) relay channel with self-interference. This channel is
comprised of a source, an FD relay, and a destination, where a direct
source-destination link does not exist and the FD relay is impaired by
self- interference. We model the self-interference as an additive
Gaussian random variable whose variance is proportional to the amplitude
of the transmit symbol at the relay. For this channel, we derive the
capacity and propose an explicit capacity- achieving coding scheme.
Thereby, we show that the optimal input distribution at the source is
Gaussian and its variance depends on the amplitude of the transmit
symbol at the relay. On the other hand, the optimal input distribution
at the relay is discrete or Gaussian, where the latter case occurs only
when the relay- destination link is the bottleneck link. The derived
capacity converges to the capacity of the two-hop ideal FD relay channel
without self- interference and to the capacity of the two-hop
half-duplex (HD) relay channel in the limiting cases when the
self-interference is zero and infinite, respectively. Our numerical
results show that significant performance gains are achieved using the
proposed capacity-achieving coding scheme compared to the achievable
rates of conventional FD relaying and HD relaying.


FAU Authors / FAU Editors

Schober, Robert Prof. Dr.-Ing.
Lehrstuhl für Digitale Übertragung
Sippel, Erik
Lehrstuhl für Hochfrequenztechnik


External institutions
Monash University


How to cite

APA:
Zlatanov, N., Sippel, E., Jamali, V., & Schober, R. (2016). Capacity of the Gaussian Two-Hop Full-Duplex Relay Channel with Self-Interference. In Proceedings of the 2016 IEEE Global Communications Conference (GLOBECOM). IEEE.

MLA:
Zlatanov, Nikola, et al. "Capacity of the Gaussian Two-Hop Full-Duplex Relay Channel with Self-Interference." Proceedings of the 2016 IEEE Global Communications Conference (GLOBECOM) IEEE, 2016.

BibTeX: 

Last updated on 2019-16-04 at 22:23