Incremental Relaying for Power Line Communications: Performance Analysis and Power Allocation

Dubey, Ankit; Kundu, Chinmoy; Ngatched, Telex M. N.; Dobre, Octavia A.; Mallik, Ranjan K.

doi:10.1109/jsyst.2018.2879162

Cited by 14 publications

(13 citation statements)

References 33 publications

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“…respectively, as shown in Algorithm 1 Thereafter, for a known Λ, the problem is simplified to solving P2 which is equal to obtaining the optimal values of BW allocated to each SD for a given association. These optimal values are obtained by solving the Lagrange equations in (39) and (44) and the approximate solutions are derived in (42) and (47), respectively. Finally, the SRC can be obtained from (20) using the association and the corresponding BW.…”

Section: Hierarchical Decomposition Methodsmentioning

confidence: 99%

Optimisation of indoor hybrid PLC/VLC/RF communication systems

et al. 2020

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In this work, we propose a hybrid power line communication (PLC)/visible light communication (VLC)/radio frequency (RF) fronthaul with a fiber based wired backhaul system to support massive number of smart devices (SDs). Since, a signal-to-noise ratio (SNR) based access point (AP) association and bandwidth (BW) allocation for each SD do not necessarily improve the system capacity, we propose novel and efficient AP association and BW allocation strategies to maximize the sum rate capacity (SRC) of the hybrid system under consideration. An optimization problem is formulated for the SRC with the AP association and BW allocation as the optimization parameters and a hierarchical decomposition method is used to convert the non-linear optimization problem into a set of convex optimization problems. Then, the proposed strategies are used to solve the optimization problem in an iterative manner till the SRC converges to an optimal value. Further, an analytical approximation for the BW allocated to each SD for a given AP association is derived using the Lagrangian multiplier method. The performance of the proposed system is evaluated through extensive numerical results. Moreover, the effect of the increased number of SDs on the optimal SRC is analysed.

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Section: Hierarchical Decomposition Methodsmentioning

confidence: 99%

Optimisation of indoor hybrid PLC/VLC/RF communication systems

et al. 2020

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“…We propose to optimize the power allocation coefficients to enhance the NOMA TWR gain over conventional schemes in terms of the system throughput and the ergodic sum-rate. Based on the analytic results, the power allocation problem is formulated as [6], [19]…”

Section: Power Allocation Optimizationmentioning

confidence: 99%

“…However, to maximize the quality of service (QoS) in PLC networks, the main bottlenecks such as bursty impulsive noise, impedance mismatch, frequency selective multipath fading, and electromagnetic compatibility (EMC) issues need to be addressed. The frequent load switching of home and industrial appliances causes PLC to suffer from impulsive noise with a significant degradation in performance [6]. Efforts have been made to mitigate the effects of impulsive noise on data signals by the use of techniques such as nulling, waveform clipping, and error control coding methods [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Two-Way Relaying Non-Orthogonal Multiple Access With Imperfect Successive Interference Cancellation in Power Line Communications

Ahiadormey

Anokye

Park

et al. 2020

IEEE Open J. Commun. Soc.

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In this paper, we study the application of cooperative non-orthogonal multiple access (NOMA) in power line communication (PLC) where two users exchange information using a two-way relay (TWR). Under the assumption of perfect and imperfect successive interference cancellation (SIC), we analyze key performance metrics for PLC log-normal channels impaired by impulsive noise. In particular, for delay-limited (DL) and delay-tolerant (DT) modes, approximate closed-form expressions are derived for the user outage probability and user ergodic rate. The analytic results are verified via Monte Carlo simulations. Compared with the conventional orthogonal multiple access (OMA) scheme, the simulation results show that our proposed NOMA TWR enhances the user outage probability and the user ergodic rate performance in the low signal-to-noise ratio (SNR) region. However, this gain diminishes as the imperfect SIC error increases and is non-existent beyond a certain level of imperfect SIC. Furthermore, the system performance is maximized by optimizing the power allocation coefficients where the system throughput and ergodic sum-rate of the NOMA TWR network in DL and DT operation, respectively, are shown to approach a ceiling in the presence of imperfect SIC. The energy efficiency (EE) of the proposed system is also analyzed for DL and DT modes.

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“…During the relay phase, R will transmit the symbol

{\overset{s}{true}}_{2} = ℜ false(s_{2} false) + ȷ ℑ false(s_{1} false)

to D if R correctly decodes the symbol

{\overset{s}{true}}_{1}

(determined by cyclic redundancy check [CRC]); else, S will transmit the symbol

{\overset{s}{true}}_{2}

to D . The relay informs the source about its failure in decoding

{\overset{s}{true}}_{1}

through a reliable feedback channel . Thus, with the SSD scheme, we can transmit two symbols in two phases, and hence, full spectral efficiency is achieved.…”

Section: System Modelmentioning

confidence: 99%

“…Rabie et al evaluated the performance of multihop relaying over non‐Gaussian PLC channels. The incremental selective DF relaying for PLC has been proposed in the works of Dubey et al Mathur et al studied the performance of dual‐hop wireless‐power‐line mixed cooperative system with DF relaying. An opportunistic DF‐based multiple‐relaying scheme where the optimal relay is selected for data processing has been proposed in the work of Qian et al However, the cooperative PLC systems discussed in other works are based on the conventional repetition‐based DF relaying strategy, and thus, the improvement in the reliability of the received signal at the destination node is achieved at the cost of reduction in spectral efficiency as the relay transmits the same symbol received from the source node to the destination node during relay phase.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of cooperative power‐line communication system with signal space diversity

Sikri

Mathur

Srinivas

2020

Trans Emerging Tel Tech

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Power-line communication (PLC) is a cost-effective and promising communication technology for many smart grid applications. However, the presence of additive and multiplicative power line noises deteriorate the performance of a PLC system. In this paper, we propose signal space diversity (SSD) technique for a cooperative PLC system. The additive PLC channel noise is assumed to be Bernoulli-Gaussian-distributed. The multiplicative PLC channel noise gain is characterized by log-normal distribution. The closed-form expressions of the average symbol error rate (SER) and outage probability of cooperative PLC system with SSD have been derived in this paper. It has been shown that the proposed cooperative PLC system results in achieving better spectral efficiency, as well as the reliability of the received signal.Trans Emerging Tel Tech. 2020;31:e3845.wileyonlinelibrary.com/journal/ett

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Incremental Relaying for Power Line Communications: Performance Analysis and Power Allocation

Cited by 14 publications

References 33 publications

Optimisation of indoor hybrid PLC/VLC/RF communication systems

Optimisation of indoor hybrid PLC/VLC/RF communication systems

Two-Way Relaying Non-Orthogonal Multiple Access With Imperfect Successive Interference Cancellation in Power Line Communications

Performance analysis of cooperative power‐line communication system with signal space diversity

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