Non Orthogonal Multiple Access (NOMA) for broadband communication in smart grids using VLC and PLC

Naz, Ayesha; Baig, Shams Ali; Asif, Hafiz M.

doi:10.1016/j.ijleo.2019.03.034

Cited by 8 publications

(6 citation statements)

References 16 publications

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“…Similarly, F 4 also receives data of V 1 in addition to V 4 and V 5 . Maximal-Ratio-Combining (MRC) is applied on the received signal y in (12) to combine the signal of the kth user (for example, User 1, in this case) for the analysis of the effect of IUI over a single user, as expressed here,…”

Section: Interuser Interference In Plc-scmamentioning

confidence: 99%

“…where H s is referred to (4) and w denotes the IID AWGN noise of each link between the resource and the user, each link being independent of the others as specified in (12). The received signal is combined through MRC for each user as described in (13).…”

Section: Fft-scma System Model For Plcmentioning

confidence: 99%

“…To cope with modern demands of massive connectivity and spectrum incompetency of OMA, NOMA can also be applied in PLC as well [2][3][4][5][6][7][8][9][10]. Research works related to PLC-NOMA can be found in [10][11][12]. Signals from several users are superimposed in this method at the same frequency and time slot but with different power levels based on their relative distance from the base station.…”

Section: Introductionmentioning

confidence: 99%

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Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication

et al. 2022

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This paper presents Discrete Wavelet Transformed Sparse Code Multiple Access (DWT-SCMA) in Power Line Communication (PLC) systems. In the present internet of things era, PLC provides an established infrastructure for low-cost and reliable indoor connectivity. PLC systems can benefit from the Sparse Code Multiple Access (SCMA) technique, which allows multiple users to access a frequency slot simultaneously to maximize spectrum efficiency. However, interuser interference arises in SCMA when numerous users map their data to the same frequency resource; this, in turn, is likely to be enhanced by the noisy PLC channel. This article adopts the intriguing aspects of DWT to address the interference difficulties. A mathematical model of the proposed technique is also presented and compared with Fast Fourier Transformed SCMA (FFT-SCMA). In the PLC environment, DWT-SCMA is found to outperform FFT-SCMA.

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Section: Interuser Interference In Plc-scmamentioning

confidence: 99%

Section: Fft-scma System Model For Plcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication

et al. 2022

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“…In 2019, Naz et al (2019) have adopted an effective approach for the intensely integrated VLC and PLC systems that majorly focused on the preliminary outcomes, thus illustrating the capability of smart grids. Here, the major constraints were resilience to interference and accordingly, the overall improved performance was attained by the adopted scheme at reasonable operation cost.…”

Section: Literature Review 21 Related Workmentioning

confidence: 99%

A detailed review on non-orthogonal multiple accessbased spatial modulation systems

Jadhav

Mahor²,

Bhowmick³

et al. 2020

IJPCC

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Purpose Non-orthogonal multiple access (NOMA) is a much hopeful scheme, which is deployed to enhance the spectral efficiency (SE) significantly, and it also enhances the massive access that has attained substantial concern from industrial and academic domains. However, the deployment of superposition coding (SC) at the receiver side resulted in interference. For reducing this interference, “multi-antenna NOMA” seems to be an emerging solution. Particularly, by using the channel state information at the transmitter, spatial beam forming could be deployed that eliminates the interference in an effective manner. Design/methodology/approach This survey analyzes the literature review and diverse techniques regarding the NOMA-based spatial modulation (SM) environment. It reviews a bunch of research papers and states a significant analysis. Initially, the analysis depicts various transmit antenna selection techniques that are contributed in different papers. This survey offers a comprehensive study regarding the chronological review and performance achievements in each contribution. The analytical review also concerns on the amplitude phase modulation (APM) selection schemes adopted in several contributions. Moreover, the objective functions adopted in the reviewed works are also analyzed. Finally, the survey extends with various research issues and its gaps that can be useful for the researchers to promote improved future works on NOMA-based SM. Findings This paper contributes to a review related to NOMA-based SM systems. Various techniques and performance measures adopted in each paper are analyzed and described in this survey. More particularly, the selection of transmission antenna and APM are also examined in this review work. Moreover, the defined objective function of each paper is also observed and made a chronological review as well. Finally, the research challenges along with the gaps on NOMA-based SM systems are also elaborated. Originality/value This paper presents a brief analysis of NOMA-based SM systems. To the best of the authors’ knowledge, this is the first work that uses NOMA-based SM systems to enhance SE.

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“…14 A recently developed communication paradigm, non-orthogonal multiple access (NOMA), mainly aims at efficient utilization of spectrum for 5G networks, smart grid technology, radar communication and so forth. [15][16][17][18][19] The throughput and capacity of a communication system is known to be improved by enabling users to share common frequency spectrum along with power-or code-domain multiplexing. 20,21 The power-domain NOMA enables stronger channel conditions with lesser power delivery to the user by using the principle of superimposition to mix their corresponding signals at the transmitter with different power levels.…”

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confidence: 99%

Non‐orthogonal multiple access‐aided MIMO cognitive radio networks with selective reporting

Yasrab

Kishore²,

Gurugopinath

2022

Trans Emerging Tel Tech

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In this article, we investigate the performances of conventional cooperative sensing (CCS)‐ and superior selective reporting (SSR)‐based cooperative sensing schemes in a multiple‐input, multiple‐output (MIMO)‐aided non‐orthogonal multiple access (NOMA)‐driven cognitive radio (CR) networks. First, we derive expressions for the probabilities of false‐alarm and signal detection for an optimal detector in the considered MIMO‐NOMA CR setup. Next, we study a constrained optimization problem that maximizes the sum rates of CCS and SSR schemes, with a constraint on the power allocation at SUs. This problem is shown to be a constrained convex optimization problem. Later, we analytically characterize and compare the sum rate performances of CCS and SSR schemes in MIMO‐NOMA CR and MIMO‐based orthogonal multiple access (MIMO‐OMA) CR networks. Extensive computer simulation results are presented which corroborate our analysis, which also quantifies the gain in performance of the proposed MIMO‐NOMA CR network employing SSR scheme when compared to conventional MIMO‐OMA CR systems. Furthermore, we present an experimental study based on RTL‐SDR setup, which supports our theory and also paves way towards a practical implementation of the proposed framework.

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Non Orthogonal Multiple Access (NOMA) for broadband communication in smart grids using VLC and PLC

Cited by 8 publications

References 16 publications

Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication

Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication

A detailed review on non-orthogonal multiple accessbased spatial modulation systems

Non‐orthogonal multiple access‐aided MIMO cognitive radio networks with selective reporting

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