Effect of clipping on the achievable rate of non-orthogonal multiple access with DCO-OFDM

Chu, Weiwen; Dang, Jian; Zhang, Zaichen; Wu, Liang

doi:10.1109/wcsp.2017.8170971

Cited by 6 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GRPA [232] OFDMA-NOMA [233] C-SWIPT-NOMA [139 -143] MISO|SISO-NOMA [144 -145] NOMA-EH [146 -147] MTBSA [52] Q-NOMA [53] TIM-NOMA [262] GFDM-NOMA [263] NOMA-SCFDM [234] NOMA-PON [235 -236] DCO-OFDM-NOMA [237] FTN-FRCT-NOFDM [238] T-NOMA [103] JP-CoMP-NOMA [33] CS|CB-NOMA [33] NOMA-MC [293] VP-NOMA [294 -296] TS-NOMA [297] DH-NOMA [298] FAIR-NOMA [299] DBS-NOMA [300] W-NOMA [301] DBIRA [54] NOMA-MCIK [55] NOMA-OPT [56] DC-NOMA [57] FD-D2D-CNOMA [58] TTMA [59] C-HARQ-NOMA [60] JUCPA [61] D2DA-NOMA Relay [62] SWIPT|F-CR-NOMA [148] SWIPT-NOMA-HetNets [149 -150] N : MEC-NOMA [213 -219] MBMS-NOMA [264] JT-NOMA [265] NOMA-HCN [266] R : mmWAVE L : SDN-NOMA [205] J : mMIMO-NOMA [189 -196] B : CC C-NOMA [47] CNAR [67] CDRT-NOMA [68] UP-NOMA [70] HD|FD-CNOMA [71] FD-NOMA-VP [72] NOMA-...…”

Section: A D2d Communicationmentioning

confidence: 99%

“…Direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) technique was used in the VLC system to convert the bipolar OFDM signal into a unipolar one. In [237], the authors integrated the NOMA technique with DCO-OFDM to enhance the system SE. In this scheme, the authors studied the impact of clipping in terms of attenuation and clipping noise through asymmetrical double clipping technique.…”

Section: ) Dco-ofdm-noma [237]mentioning

confidence: 99%

See 1 more Smart Citation

A Systematic Review on NOMA Variants for 5G and Beyond

et al. 2021

View full text Add to dashboard Cite

Over the last few years, interference has been a major hurdle for successfully implementing various end-user applications in the fifth-generation (5G) of wireless networks. During this era, several communication protocols and standards have been developed and used by the community. However, interference persists, keeping given quality of service (QoS) provision to end-users for different 5G applications. To mitigate the issues mentioned above, in this paper, we present an in-depth survey of state-ofthe-art non-orthogonal multiple access (NOMA) variants having power and code domains as the backbone for interference mitigation, resource allocations, and QoS management in the 5G environment. These are future smart communication and supported by device-to-device (D2D), cooperative communication (CC), multiple-input and multiple-output (MIMO), and heterogeneous networks (HetNets). From the existing literature, it has been observed that NOMA can resolve most of the issues in the existing proposals to provide contention-based grant-free transmissions between different devices. The key differences between the orthogonal multiple access (OMA) and NOMA in 5G are also discussed in detail. Moreover, several open issues and research challenges of NOMA-based applications are analyzed. Finally, a comparative analysis of different existing proposals is also discussed to provide deep insights to the readers.

show abstract

Section: A D2d Communicationmentioning

confidence: 99%

Section: ) Dco-ofdm-noma [237]mentioning

confidence: 99%

A Systematic Review on NOMA Variants for 5G and Beyond

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In particular, the authors proposed users scheduling techniques and feedback mechanisms to boost the spectral efficiency. Moreover, a hybrid NOMA-OFDM system was investigated and shown to exhibit superior performance in terms of the achievable rate over OMA-OFDM systems [63], [64]. Likewise, for uplink NOMA-based VLC communications, joint detection was proposed in [65] to decode the messages of multiple users.…”

Section: Noma In Vlcmentioning

confidence: 99%

Rate-Splitting Multiple Access: Unifying NOMA and SDMA in MISO VLC Channels

Naser

Sofotasios

Bariah

et al. 2020

IEEE Open J. Veh. Technol.

View full text Add to dashboard Cite

The increased proliferation of connected devices requires a development of innovative technologies for the next generation of wireless systems. One of the key challenges, however, is the spectrum scarcity, owing to the unprecedented broadband penetration rate in recent years. Based on this, visible light communication (VLC) has recently emerged as an effective potential solution for enabling high-speed short-range communications. Yet, despite their undoubted advantageous features, VLC systems suffer from several limitations which constraint their capabilities. As a result, several multiple access (MA) techniques, such as space-division multiple access (SDMA) and non-orthogonal multiple access (NOMA), have been considered in VLC networks as an effective approach, among others, to circumvent these limitations. However, despite their achievable multiplexing gain, their overall performance is still limited compared to the overall potential of this technology. Motivated by this, the presented article offers two contributions: firstly, we provide an overview of the key MA technologies used in VLC systems and then we introduce rate-splitting multiple access (RSMA), and discuss its capabilities and potentials in VLC systems. Secondly, through realistic system modeling and simulations of an RSMA-based two-user scenario, we illustrate the flexibility of RSMA as well as its superiority in terms of the achievable weighted sum rate over NOMA and SDMA in the context of VLC. Finally, we discuss technical challenges, open issues, and research directions, along with the offered results and insights that are expected to be useful towards the effective practical realization of RSMA in VLC configurations.

show abstract

“…As illustrated in Figure 1, superposition of the bipolar signal of the two users is done in power domain. Let P T is the available electrical power for transmission of both users information signals, the superimposed timedomain signal x n can be written in the following form [15,16]:…”

Section: System Model Of Noma Pd-dco-ofdmmentioning

confidence: 99%

“…In those [13,14] previous works, NOMA has been studied for VLC without consideration of double-sided clipping noise. In [15], the effect of clipping on the achievable rate of NOMA-DCO-OFDM system was presented in comparisons to the performance of orthogonal multiple access (OMA) scheme. In [11], polarity division DCO-OFDM (PD-DCO-OFDM) was introduced with code domain NOMA to reduce the effect of clipping noise.…”

Section: Introductionmentioning

confidence: 99%

Impact of clipping noise on the sum rate of NOMA with PD-DCO-OFDM and conventional DCO-OFDM

Gebeyehu

2020

Heliyon

View full text Add to dashboard Cite

sIn visible light communication (VLC) systems, a non-orthogonal multiple access (NOMA) scheme is deemed promising technology to offer better spectral efficiency than the Orthogonal multiple access (OMA) scheme. The feasibility of power domain NOMA for VLC system has been studied with different variants of unipolar OFDM schemes. However, few research works have been presented on the impact of clipping noise on the achievable sum rate of NOMA with DC-biased optical OFDM (DCO-OFDM) and polarity divided DCO-OFDM (PD-DCO-OFDM). This paper presents the impact of clipping noise on the achievable sum rate of NOMA-DCO-OFDM and NOMA-PD-DCO-OFDM VLC systems. Moreover, NOMA-DCO-OFDM and NOMA-PD-DCO-OFDM systems are compared based on achievable sum rates for different total power constraints and signal clipping levels. For the two-user scenario, Simulation results have confirmed that NOMA-PD-DCO-OFDM can offer a better sum rate compared to NOMA-DCO-OFDM system.

show abstract

Effect of clipping on the achievable rate of non-orthogonal multiple access with DCO-OFDM

Cited by 6 publications

References 10 publications

A Systematic Review on NOMA Variants for 5G and Beyond

A Systematic Review on NOMA Variants for 5G and Beyond

Rate-Splitting Multiple Access: Unifying NOMA and SDMA in MISO VLC Channels

Impact of clipping noise on the sum rate of NOMA with PD-DCO-OFDM and conventional DCO-OFDM

Contact Info

Product

Resources

About