Energy-Efficient Relay Selection and Resource Allocation in Nonregenerative Relay OFDMA Systems

Performance analysis of full‐duplex cellular two‐way relay networks with the Nth worst relay selection under channel estimation error and cochannel interference

“…Therefore, by substituting the CDF F LB Λ ( th ) from (6) into (12) and the result into (11), the tight LB expression for the OOP can be expressed as…”

“…Furthermore, Ju and Kim 11 have examined the relay selection scheme in TWR systems with ANC and time division broadcast protocols. The energy-efficient relay selection in nonregenerative relay-based orthogonal frequency-division multiple access systems have been examined in the work of Chen et al 12 Moreover, Park et al 13 have studied two-phase and three-phase ANC schemes for orthogonal frequency division multiplexing-based TWR networks with multiple relays. It should be noted that all the aforementioned works [9][10][11][12][13] have considered that each relay in the system works with half-duplex (HD) capability.…”

“…• We also deduce the asymptotic analysis for the OOP and ABER in the high SNR regime. Using asymptotic outage expression, we present some practical cases of interest to highlight the effect of CEE, CCI, and residual self-interference 6,7 No No Full-duplex Multiuser TWR None Fidan and Kucur 8 No No Full-duplex Multiantenna TWR None Other works [9][10][11][12][13] No No Half-duplex Multirelay TWR Best relay selection Other works [14][15][16][17][18][19][20][21] No No Full-duplex Multirelay TWR Best relay selection Other works [22][23][24][25][26] No No Half-duplex Multirelay TWR Nth Best relay selection Yang et al 27 No…”

Power‐efficient D2D relaying cellular network access

“…In addition, the energy efficiency has become one of the most important aspects of wireless communications technologies to reduce the operational expenditure and improve sustainability of wireless service. The power efficiency problem has drawn particularly large attention due to the increasing power consumption and the slow progress in battery technologies . When UEs are employed as relays, the transmission path is divided and shortened, so that the total transmission power required for access can be correspondingly reduced .…”

“…The power efficiency problem has drawn particularly large attention due to the increasing power consumption and the slow progress in battery technologies. 14 When UEs are employed as relays, the transmission path is divided and shortened, so that the total transmission power required for access can be correspondingly reduced. 15 Several approaches have been proposed to address the issue of power efficiency for D2D relaying networks.…”