527 research outputs found
Half-Duplex or Full-Duplex Relaying: A Capacity Analysis under Self-Interference
In this paper multi-antenna half-duplex and full-duplex relaying are compared
from the perspective of achievable rates. Full-duplexing operation requires
additional resources at the relay such as antennas and RF chains for
self-interference cancellation. Using a practical model for the residual
self-interference, full-duplex achievable rates and degrees of freedom are
computed for the cases for which the relay has the same number of antennas or
the same number of RF chains as in the half-duplex case, and compared with
their half-duplex counterparts. It is shown that power scaling at the relay is
necessary to maximize the the degrees of freedom in the full-duplex mode.Comment: New references added and some typos have been corrected. 6 Pages, 5
Figures. Accepted for publication in the CISS-201
Performance analysis with wireless power transfer constraint policies in full-duplex relaying networks
In practice, full-duplex (FD) transmission mode not only helps extend the coverage but also lengthen network lifetime. In this paper, we develop wireless power supply policies, namely separated power (SP) and harvested power (HP) to propose a flexible architecture at the relay node in FD decode-and-forward (DF) relaying networks considering time switching-based relaying protocol (TSR) to achieve optimal time used for a communication process. This transmission mode requires more processing procedure at the relay, i.e. antenna installations and radio frequency (RF) self-interference cancellation. We evaluate the optimal power constraints in case of SP and HP to achieve better power consumption efficiency at the relay node. More importantly, closed-form expressions for outage probability and throughput are provided, and we also use numerical and simulation results to compare SP with HP.Web of Science234767
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