Performance Tradeoff between User Fairness and Energy Conservation in Downlink NOMA Systems

Qu, Hua; Tang, Rui; Zhao, Jihong; Cao, Zhaoxin

doi:10.1109/iccw.2018.8403607

Cited by 3 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We can observe from Fig. 7 that the analytical expressions obtained in (32) and (33) prove to be excellent approximations to the true performance for the entire range of SNR values. Note that the ergodic capacity for users D 1 and D 2 also saturate to a floor at the high SNR regime due to the detrimental effect of residual SI at the FD relays.…”

Section: Numerical Results and Discussionmentioning

confidence: 79%

“…Additionally, it was established that increasing the power allocation factor of the strong user resulted in a performance improvement, until some value from which the outage performance of both NOMA users worsens, since the correct decoding of strong user' message depends on the success of the SIC process relative to the weak user's information. Some interesting extensions for future development of this investigation is to study optimal/suboptimal relay selection strategies and optimal power allocation schemes, such as those proposed in [18,19] for HD-relay aided NOMA scenarios, as well as to assess the impact of imperfect SIC on the system performance [22,32]. APPENDIX A PROOF OF PROPOSITION 1 In the following, we derive the exact outage probability for weak user D 1 .…”

Section: Discussionmentioning

confidence: 99%

“…In a relay-aided NOMA system with two destinations, in which PRS among K FD-AF relays is employed, an approximated closed-form expression for the ergodic capacity of the weak user, D 1 , is given as in (32), shown at the top of the next page, where…”

Section: Propositionmentioning

confidence: 99%

“…Therefore, after solving the integral in (43) with the use of [35], a closed-form approximation for the ergodic capacity of the weak user D 1 can be obtained as in (32).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Performance Analysis of Full-Duplex Relay-Aided NOMA Systems Using Partial Relay Selection

Tregancini

Olivo

Osorio

et al. 2020

IEEE Trans. Veh. Technol.

View full text Add to dashboard Cite

Capitalizing on the benefits of non-orthogonal multiple access (NOMA) and full-duplex relaying as key technologies to boost spectral efficiency in the next generation of wireless communications, herein we investigate the performance of a cooperative network in which a source communicates with two destinations via one node selected from a set of full-duplex amplify-and-forward relays. For this purpose, a power-domain NOMA scheme is used to transmit information from the source to the destinations, and partial relay selection is performed to choose the relay based on the channel state information of the first hops. The system performance is characterized in terms of both the outage probability and the ergodic capacity, for which, exact analytical expressions are derived in integral form. In addition, to reduce the computational complexity of the obtained analytical results, closed-form expressions are derived from lower-bound, approximate, and asymptotic analyses. From these analytical expressions, the impact on the system performance of the number of relays, the power allocation factor between the NOMA destinations, and the residual self-interference at full-duplex relays is assessed. The correctness of our analyses is validated by Monte Carlo simulations, and a comparison with the half-duplex relay-aided NOMA system counterpart is also provided.

show abstract

Section: Numerical Results and Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Section: Propositionmentioning

confidence: 99%

“…Therefore, after solving the integral in (43) with the use of [35], a closed-form approximation for the ergodic capacity of the weak user D 1 can be obtained as in (32).…”

mentioning

confidence: 99%

See 2 more Smart Citations