Energy-Efficient Vector OFDM PLC Systems With Dynamic Peak-Based Threshold Estimation

Ikpehai, Augustine; Adebisi, Bamidele; Rabie, Khaled M.; Fernando, Michael; Wells, Andrew T

doi:10.1109/access.2017.2709254

Cited by 12 publications

(10 citation statements)

References 50 publications

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“…Comparison of different uniform distribution models in terms of maximum output SNRs with respect to DPTE when SNR = 40dB and p = 0.1 the amplitude distribution of the time-domain OFDM signals to uniform distribution as described in Section III-A and obtain the peak amplitude T which is used to blank excess amplitude signals. Using (14) and (16), we calculate the output SNR for DPTE and U-DPTE schemes, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…To improve the received signal integrity, different IN mitigation techniques [2], [9], [12]- [17] were proposed. Recently, reducing the peak-to-average power ratio (PAPR) of OFDM symbol before transmission over PLC channel were considered in [2], [12]- [14], [16], [18]- [20]. This is followed by assuming that the coefficients of IN are present at the receiver of PLC systems, thus blanking, clipping or hybrid clipping-blanking can be used [15] to mitigate the IN.…”

Section: Introductionmentioning

confidence: 99%

“…Other techniques have also been studied such as clipping [22] and adaptive IN mitigation [23] schemes, although these do not operate with DPTE algorithm. Besides, all reported DPTE schemes so far [2], [16], [20], [24] do not adopt realistic fading channels. On the other hand, COB scheme conducts extensive search [12], [19] to achieve optimal SNR performance which expands processing time and depletes system power.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Approach to Peak Threshold Estimation for Impulsive Noise Reduction Over Power Line Fading Channels

Adebisi

Anoh

Rabie

et al. 2019

IEEE Systems Journal

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Impulsive noise (IN) is a major component that degrades signal integrity in power line communication (PLC) systems. PLC systems driven by orthogonal frequency-division multiplexing (OFDM) have Rayleigh distributed amplitudes. Based on the dynamic nature of each OFDM symbol, peak amplitude of the symbol was recently shown to be a suitable threshold for detecting IN and this technique outperforms conventional optimal blanking (COB) scheme. In this study, we improve the dynamic peak-based threshold estimation (DPTE) scheme that relies on the OFDM Rayleigh distributed amplitudes by converting the default Rayleigh distribution to uniform distribution to unveil IN with power levels below that of the conventional peak signal. Then, we perform nonlinear mitigation processing on the received signals whose amplitudes exceed the uniformly distributed amplitude using blanking; a scheme we will refer to as uniformly distributed DPTE (U-DPTE). Our results (based on U-DPTE) significantly outperforms DPTE scheme by up to 4dB gain in terms of output signal-to-noise ratio (SNR). Additionally and unlike earlier DPTE studies, we propose a novel threshold criteria that compensates the Gaussian noise power level amplification (after equalization) for achieving optimal SNR over a log-normal multipath fading channel. The results further reveal the sub-optimality of the DPTE scheme over COB.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Approach to Peak Threshold Estimation for Impulsive Noise Reduction Over Power Line Fading Channels

Adebisi

Anoh

Rabie

et al. 2019

IEEE Systems Journal

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“…Another mitigation technique is proposed in [13] where a nonlinear device is placed at the front end of the receiver. This technique is simple and easy to be implemented; due to these two reasons, this method is widely used in practice [9,14,15]. There are three dierent types of nonlinear preprocessors namely:…”

Section: Nonlinear Preprocessorsmentioning

confidence: 99%

Impulsive Noise Modeling and Cancellation Strategies Over Power Line Channels

Gheth

Rabie

Adebisi

2018

Lecture Notes in Electrical Engineering

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Impulsive noise is one of the main impairments over power line channels. In this respect, this paper presents the available impulsive noise models and then reviews and compare several existing mitigation techniques proposed in the literature. These methods include multicarrier modulation, nonlinear preprocessors, multiple-input multiple-output, coding and iterative techniques. Interesting comparisons between these techniques and meaningful insights are presented and discussed.

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“…Orthogonal Frequency Division Multiplexing (OFDM) is widely employed in wireless and wired communication applications such as Digital Video Broadcasting (DVB) and 3GPP Long Term Evolution (LTE) [1]. Also, OFDM is the base technology for Power Line Communication (PLC) system standard for smart grid applications such as IEEE 1901.2, PoweRline Intelligent Metering Evolution (PRIME), G3-PLC, and HomePlug Green PHY [2]. Parallel narrowband subcarrier transmission is achieved by an OFDM system, thus, high data rates are attained.…”

Section: Introductionmentioning

confidence: 99%

PAPR Reduction in OFDM System with π/4-QPSK Mapper Using Improved PTS Technique

Ali¹,

Rao²,

Parsa³

2018

jcm

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An Orthogonal Frequency Division Multiplexing (OFDM) system with π/4-QPSK (Quadrature Phase Shift Keying) mapper is considered. Partial Transmit Sequence (PTS) technique with an improved partitioning technique is proposed for PAPR reduction. Even though in PTS, the pseudo-random partitioning method yields the best PAPR reduction compared to adjacent and interleaved partitioning methods, there is a lack of structure in partitioning and hence increases system complexity both in the transmitter and the receiver. The proposed scheme offers a systematic and simple construction of adjacently partitioned sub-blocks using the Magic squares to pseudo-randomize them. Numerical results show that the proposed method outperforms both the adjacent and the interleaved partitioning methods and has nearly the same performance as that of pseudo-random partitioning method. 

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Energy-Efficient Vector OFDM PLC Systems With Dynamic Peak-Based Threshold Estimation

Cited by 12 publications

References 50 publications

A New Approach to Peak Threshold Estimation for Impulsive Noise Reduction Over Power Line Fading Channels

A New Approach to Peak Threshold Estimation for Impulsive Noise Reduction Over Power Line Fading Channels

Impulsive Noise Modeling and Cancellation Strategies Over Power Line Channels

PAPR Reduction in OFDM System with π/4-QPSK Mapper Using Improved PTS Technique

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