Ergodic Capacity and Outage Performance Analysis of Uplink Full-Duplex Cooperative NOMA System

Xie, Xianbin; Liu, Jinhua; Huang, Jiawen; Zhao, Shiwei

doi:10.1109/access.2020.3022279

Cited by 31 publications

(23 citation statements)

References 17 publications

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“…A considerable difference in power levels across the users is maintained at the transmitter to establish a low error demultiplexing of user signals at the receiver using SIC [30], [34]. It is known that the NOMA offers greater achievable rate regions compared to OMA techniques such as TDMA and OFDMA, as long as users are assigned with different power levels [33], [35], [36].…”

Section: A Backgroundmentioning

confidence: 99%

Outage Performance of Relay-Assisted Single- and Dual-Stage NOMA Over Power Line Communications

RAMESH¹,

Gurugopinath²,

Muhaidat³

2021

Preprint

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<p>In this paper, we analyze the performance of relay-assisted, single-stage (SS) non-orthogonal multiple access (NOMA) and dual-stage (DS) NOMA power line communication systems. Specifically, derive closed form expressions for the outage probabilities of the SS NOMA and DS NOMA schemes. Subsequently, we formulate optimization problems and obtain closed-form solutions for the optimal power allocation coefficients of the SS NOMA and DS NOMA scheme, such that the probability of overall outage is minimized. The accuracy of our analysis and the tightness of the approximations employed are validated through Monte Carlo simulations and numerical techniques. Moreover, we show that the DS NOMA scheme outperforms the SS NOMA scheme, in terms of the overall outage probability.</p>

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Section: A Backgroundmentioning

confidence: 99%

Outage Performance of Relay-Assisted Single- and Dual-Stage NOMA Over Power Line Communications

RAMESH¹,

Gurugopinath²,

Muhaidat³

2021

Preprint

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“…Proof The proof process is as follows [5] The proof is completed. ◻ Proposition 1 When P pk → ∞ (no peak transmit power constraint) and 11 = 22 = 0 (perfect SIC), the upper bound of the ergodic sum capacity for the FD spectrum sharing CR networks is given by where m =…”

Section: Ergodic Sum Capacitymentioning

confidence: 99%

“…With the development of signal processing and integrated circuit techniques, the implementation of full-duplex (FD) communication technology becomes possible in the future wireless networks. Therefore, FD communication technology has received extensive attention and research in recent years [4][5][6][7][8][9]. Under perfect self-interference cancellation (SIC), compared with the half-duplex (HD) communication system, the FD communication system can obtain double spectrum efficiency.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Limits of Full-Duplex Spectrum Sharing Under Peak Interference Power Constraint

Xie

2021

Wireless Pers Commun

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Cognitive radio (CR) and full-duplex (FD) have received extensive attention and research due to their high spectrum efficiency, which can effectively solve the problem of low spectrum efficiency in current communication systems. Based on CR and FD techniques, in this paper, a FD spectrum sharing CR networks is considered, in which both secondary users (SU1 and SU2) are each equipped with dual antennas, one antenna is used to transmit signals, and the other antenna is used to receive signals at the same time and frequency. Under peak interference power and peak transmit power constraints, we analysis the ergodic sum capacity and the outage probability based on the FD spectrum sharing CR networks and the conventional spectrum sharing CR networks. Furthermore, under no peak transmit power constrain and perfect self-interference cancellation (SIC), based on the FD spectrum sharing CR networks and the conventional spectrum sharing CR networks, the closed-form expressions of the theoretical performance upper bound of the ergodic sum capacity and the outage probability are derived by two lemmas and four propositions. Accurate mathematical analysis display, under the same bandwidth, the upper bound of ergodic sum capacity for the full-duplex spectrum sharing CR networks is twice as much as the traditional spectrum sharing CR networks, and the FD spectrum sharing CR networks based on SU1, also has better performance upper bound on the outage probability than the traditional spectrum sharing CR networks. Simulations results also validate that, the FD spectrum sharing CR networks obtains better communication performance than the conventional spectrum sharing CR networks, especially when the mean of self-interference channel power gain is small. Finally, we also can see that the simulation performance upper bound is completely consistent with the theoretical analysis performance upper bound, whether in the FD spectrum sharing CR networks or the conventional spectrum sharing CR networks. So also verifies the correctness of the theoretical performance upper bound derivation.

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“…In [32], the authors proposed an uplink cooperative NOMA system, where a dedicated AF relay was used to help two uplink users transmitting information to the base station (BS). Authors in [33] proposed an uplink cooperative NOMA system, where a dedicated full-duplex decode and forward relay is used to help two uplink users.…”

Section: Introductionmentioning

confidence: 99%

Transmission Scheme, Detection and Power Allocation for Uplink User Cooperation with NOMA and RSMA

Abbasi,

Yanikomeroglu

2022

Preprint

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In this paper, we propose two novel cooperative-non-orthogonal-multiple-access (C-NOMA) and cooperative-rate-splitting-multiple-access (C-RSMA) schemes for uplink user cooperation. At the first mini-slot of these schemes, each user transmits its signal and receives the transmitted signal of the other user in full-duplex mode, and at the second mini-slot, each user relays the other user's message with amplify-and-forward (AF) protocol. At both schemes, to achieve better spectral efficiency, users transmit signals in the non-orthogonal mode in both mini-slots. In C-RSMA, we also apply the ratesplitting method in which the message of each user is divided into two streams. In the proposed detection schemes for C-NOMA and C-RSMA, we apply a combination of maximum-ratio-combining (MRC) and successive-interference-cancellation (SIC). Then, we derive the achievable rates for C-NOMA and C-RSMA, and formulate two optimization problems to maximize the minimum rate of two users by considering the proportional fairness coefficient. We propose two power allocation algorithms based on successive-convex-approximation (SCA) and geometric-programming (GP) to solve these non-convex problems. Next, we derive the asymptotic outage probability of the proposed C-NOMA and C-RSMA schemes, and prove that they achieve diversity order of two. Finally, the above-mentioned performance is confirmed by simulations.

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Ergodic Capacity and Outage Performance Analysis of Uplink Full-Duplex Cooperative NOMA System

Cited by 31 publications

References 17 publications

Outage Performance of Relay-Assisted Single- and Dual-Stage NOMA Over Power Line Communications

Outage Performance of Relay-Assisted Single- and Dual-Stage NOMA Over Power Line Communications

Fundamental Limits of Full-Duplex Spectrum Sharing Under Peak Interference Power Constraint

Transmission Scheme, Detection and Power Allocation for Uplink User Cooperation with NOMA and RSMA

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