On the Performance of NOMA-Based Cooperative Relaying Systems Over Rician Fading Channels

Jiao, Ruicheng; Dai, Linglong; Zhang, Jiayi; MacKenzie, Richard; Hao, Mo

doi:10.1109/tvt.2017.2728608

Cited by 160 publications

(164 citation statements)

References 12 publications

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“…However, most existing NOMA schemes only put emphasis on the Rayleigh fading scenario [10]. For this reason, a NOMA scheme over Rician fading channel is proposed to handle this problem [11]. Fig.…”

Section: ) Downlink Architecturesmentioning

confidence: 99%

Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends

Wan

Wen

et al. 2018

IEEE Wireless Commun.

153

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Non-orthogonal multiple access (NOMA) is a promising radio access technique for next-generation wireless networks. In this article, we investigate the NOMA-based cooperative relay network. We begin with an introduction of the existing relay-assisted NOMA systems by classifying them into three categories: uplink, downlink, and composite architectures. Then, we discuss their principles and key features, and provide a comprehensive comparison from the perspective of spectral efficiency, energy efficiency, and total transmit power. A novel strategy termed hybrid power allocation is further discussed for the composite architecture, which can reduce the computational complexity and signaling overhead at the expense of marginal sum rate degradation. Finally, major challenges, opportunities, and future research trends for the design of NOMA-based cooperative relay systems with other techniques are also highlighted to provide insights for researchers in this field. Index TermsNon-orthogonal multiple access (NOMA), cooperative relay network, power allocation, degree of asymmetry.

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Section: ) Downlink Architecturesmentioning

confidence: 99%

Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends

Wan

Wen

et al. 2018

IEEE Wireless Commun.

153

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“…The authors in [4] have firstly proposed NOMA-based cooperative relaying systems (CRS). Ergodic sum rate of NOMA-CRS has been analyzed and its superiority to conventional CRS is proved over Rayleigh [4] and Rician fading channels [5]. The authors in [6] have analyzed the outage probability of NOMA-CRS for various scenarios with imperfect channel state information (CSI).…”

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confidence: 99%

Error Probability Analysis of NOMA-Based Diamond Relaying Network

Kara

Kaya

2020

IEEE Trans. Veh. Technol.

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Non-orthogonal multiple access (NOMA)-based cooperative relaying systems (CRS) are very promising to overcome spectral inefficiency of conventional cooperative communications. Although NOMA-CRS have great recent attention, almost all studies investigate NOMA-CRS only in terms of capacity and outage probability. Error performances of NOMA-CRS have not been well-studied. In this paper, we analyze error performance of NOMA-based diamond relaying network (NOMA-DRN) with imperfect successive interference canceler (SIC) as a NOMA-CRS scheme. We derive exact bit error probability (BEP) for NOMA-DRN and provide a tight approximated BEP in the closedform. In addition, high-SNR analysis is conducted to present that NOMA-DRN has an error floor. Moreover, it is proved that NOMA-DRN turns out to be a non-equiprobable communication system and we derive priori probabilities of symbols. All derived expressions are validated via computer simulations.Index Terms-error analysis, diamond relaying, NOMA I. INTRODUCTIONN ON-orthogonal multiple access (NOMA) is seen as one of the key technologies to fulfill requirements of future wireless networks [1]. NOMA is based on allowing users to share the same resource blocks (time, frequency, code) by splitting them into power domain. It provides a spectral efficient communication and makes the massive connection possible in such networks, Internet of Things (IoT). Thus, a two-users application of NOMA has already taken place in the wireless standards [2] and it is expected to be part of wireless evolution. In addition to its spectral efficiency, since it is easy to implement in other physical layer techniques (e.g., cooperative communication, MIMO, cognitive radio etc.), NOMA involved systems have taken tremendous recent attention [3].The interplay between NOMA and cooperative communication has been one of the most attracted topics to increase spectral efficiency of cooperative communications. The authors in [4] have firstly proposed NOMA-based cooperative relaying systems (CRS). Ergodic sum rate of NOMA-CRS has been analyzed and its superiority to conventional CRS is proved over Rayleigh [4] and Rician fading channels [5]. The authors in [6] have analyzed the outage probability of NOMA-CRS for various scenarios with imperfect channel state information (CSI). Then, NOMA-CRS with an amplify-forward relay rather than decode-forward relay has been proposed in [7], and

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“…Rician fading has found applications even in recent times in the study of the performance of distributed multiple input multiple output (MIMO) with zero forcing (ZF) receivers over correlated Rician fading channels [14], in deriving expressions for achievable rates of MIMO relay systems with ZF processing over Rician fading systems [15] and in the study of the performance of co-operative relaying systems with non-orthogonal multiple access [16]. Existing 4G and emerging 5G systems are both interference-limited.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Optimal Combining in Rician Fading With Co-Channel Interference

Srinivasan

Kalyani

2019

IEEE Trans. Veh. Technol.

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Approximate Symbol error rate (SER), outage probability and rate expressions are derived for receive diversity system employing optimum combining when both the desired and the interfering signals are subjected to Rician fading, for the cases of a) equal power uncorrelated interferers b) unequal power interferers c) interferer correlation. The derived expressions are applicable for an arbitrary number of receive antennas and interferers and for any quadrature amplitude modulation (QAM) constellation. Furthermore, we derive a simple closed form expression for SER in the interference-limited regime, for the special case of Rayleigh faded interferers. A close match is observed between the SER, outage probability and rate results obtained through the derived analytical expressions and the ones obtained from Monte-Carlo simulations.

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On the Performance of NOMA-Based Cooperative Relaying Systems Over Rician Fading Channels

Cited by 160 publications

References 12 publications

Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends

Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends

Error Probability Analysis of NOMA-Based Diamond Relaying Network

Analysis of Optimal Combining in Rician Fading With Co-Channel Interference

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