On the Performance of Full-Duplex Multi-Relay Channels With DF Relays

Abstract

Abstract-In this paper, we consider a two-hop full-duplex multi-relay channel (FD-MRC) for exploiting the high spectral efficiency of FD systems and the diversity gains of multirelay systems. Employing a decode-and-forward (DF) relaying protocol, the single best relay is selected from those relays that have successfully decoded the source message, which then helps forward the source message to the destination. Meanwhile, a new message is broadcasted by the source and all the N relays, including the selected best one, attempt to decode this new message. In view of the effect of both inter-relay interference and self-interference (SI), a one-step correlation exists between the relay decoding results in successive time slots. Then a Markov chain-based analytical model is utilized for analyzing the exact outage probability of FD-MRC. Furthermore, a closeto-full diversity order of (N − 1 + µ) is analytically proved to be attainable for FD-MRC, where µ is a factor characterizing the efficiency of SI mitigation.

Multi-Drone 3-D Trajectory Planning and Scheduling in Drone-Assisted Radio Access Networks

“…The DBS is supported by the quad-copter or multi-rotor drones, which is regarded as low altitude platform (LAP) with the low flying height (below 300m) [14], limited communication coverage (less than 3km) [14] and static hovering capability. Based on the DA-RAN architecture, we investigate the scenario in which multiple DBSs are controlled by a single BS to support users in AoI through the state-of-the-art wireless relay techniques [30] [31]. The radio coverage area of the BS |S| bs is a circle with radius r BS , and is divided into a mesh consisting of multiple grids on X-Y plane.…”

Selection of optimal transmit power in multi-hop underlay cognitive full-duplex relay networks

“…Optimal relay placement in the secondary network of a CogHDR network has been addressed in [14] assuming Nakagami-m fading channels, while the work in [15] has considered transmit power optimization to maximize the achievable ergodic capacity of CogHDR network. In addition to these, many authors have attempted to analyze and improve the performance of wireless networks, see, e.g., [16][17][18][19] and references therein. Resource allocation is very crucial in wireless systems.…”

“…In [17], the authors have studied the performance of a cooperative multi-relay system where the relays harvest energy from RF signals of the source. The authors in [18] have analyzed the performance of a dual-hop FD system with multiple relays, which provide spectral efficiency and diversity gains respectively. In [19], the authors have proposed a virtual FD relaying scheme for a cooperative multi-path relay channel (MPRC) with multiple half-duplex relays.…”

Compact Full-Duplex Amplify-and-Forward Relay Design for 5G Applications

“…with |h sd | 2 ≈ 0 due to high attenuation experienced by the signal over the direct link between S and D [15]. It is to be mentioned here that the direct link connectivity does not affect the relay selection and all the FDRs are one-way FD nodes.…”

“…for 1 ≤ i ≤ M [15]. Using this selection relaying scheme, we simulate BER performance and achievable capacity limit for the SG architecture presented in Fig.…”