Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

Al-Mawali, Khalifa S.; Sadik, Amin Z.; Hussain, Zahir M.

doi:10.1109/atnac.2008.4783311

Cited by 31 publications

(21 citation statements)

References 10 publications

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“…The SNR is set to 15 dB for all of the simulations. The signal to periodic impulsive noise ratio (SINR) is defined as (17), where is the bit energy of the signal, and the is the PSD of the periodic impulsive noise (17) In this PLC system, the PLC receiver can work normally under a certain SINR. But when the SINR is below the threshold , the interference of periodic impulsive noise will lead to the increase of the BER.…”

Section: Simulation and Verificationmentioning

confidence: 99%

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Mitigation of Periodic Impulsive Noise in OFDM-Based Power-Line Communications

Ren

Qiao

Zhao

et al. 2013

IEEE Trans. Power Delivery

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This paper presents a novel approach to mitigate the periodic impulsive noise before the synchronization of the orthogonal frequency-division multiplexing (OFDM)-based power-line communications (PLC) system. The proposed algorithm is employed to detect the periodic impulsive noise and then suppresses the periodic impulsive noise with an adaptive infinite impulse response (IIR) notch filter before the synchronization of the system, finally compensating the distortion of received signals brought by the IIR notch filter. Subsequently, the periodic impulsive noise mitigation algorithm is simulated and implemented in the PLC receiver's physical layer. Finally, the proposed algorithm is verified in field-programmable gate array and tested in the indoor PLC network. The simulation and field trial results show that the proposed periodic impulsive noise mitigation technique is simple and effective for the narrowband OFDM-based PLC system, such as the application of automatic meter reading.Index Terms-Adaptive infinite impulse response (IIR) notch filter, compensation, detection, orthogonal frequency-division multiplexing (OFDM), periodic impulsive noise, power-line communications (PLC).

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Section: Simulation and Verificationmentioning

confidence: 99%

“…In addition, a joint time-domain/frequency-domain method is proposed to mitigate the impulsive noise for the OFDM-based PLC system [17]. In [18], an interconnected type-1 fuzzy algorithm (T1FLS) trained by the modified version of the scaled conjugated gradient method is introduced to reduce the adverse effect of impulsive noise.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Periodic Impulsive Noise in OFDM-Based Power-Line Communications

Ren

Qiao

Zhao

et al. 2013

IEEE Trans. Power Delivery

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“…The signal clipping method involves limiting the possible amplitude values of a waveform to a specified threshold value T c . Clipping has been used successfully for combating IN in multicarrier systems operating over noisy environments such as terrestrial digital video broadcasting as well as the PLC channel . Compared with clipping, which limits the signal amplitudes to the value T c , the blanking technique involves setting the waveform amplitude value to zero when the received signal amplitude is above a certain threshold T b .…”

Section: Introductionmentioning

confidence: 99%

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Rivard

Cheng

2019

Int J Communication

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Summary In this paper, an investigation into the behavior of modern narrowband power‐line communication systems when concatenated with both a fountain code named Luby transform code and a combination of nonlinear preprocessing techniques called signal clipping with blanking is presented. The new systems can be used in applications such as the automatic meter reading component of smart grid technology. Testing is performed on a range of systems provided by the G3 standard and the results show that a bit error rate improvement can be achieved with the correct encoder/decoder settings. The recommended settings include an adaptive technique that uses Gaussian elimination for Luby transform code decoding and code rates that depend on the system specifications used. From there, it is shown that a further improvement is achieved when both the Luby transform code and adaptive signal clipping/blanking based on signal power are combined. It is found that these modifications present a complexity trade‐off, which is higher on the receiver side. This added complexity can be well‐tolerated in automatic meter‐reading systems because of the star topology and asymmetric nature of the network, which has a centralized agent acting as a receiver that collects data from various transmitter nodes.

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“…Power line communication (PLC) is an interesting and obvious choice for smart grid; however, the hostile nature of the PLC channel due to noise, attenuation, and multipath makes it vulnerable for data communication . Among 5 different types of noise present in PLC systems, impulse noise is the most critical noise and not easily mitigated .…”

Section: Introductionmentioning

confidence: 99%

Linear precoded wavelet OFDM‐based PLC system with overlap FDE for impulse noise mitigation

Khan

Shin

2017

Int J Communication

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Summary In recent years, power lines have gained significant interest for their use in high‐speed communications because of the already deployed power distribution infrastructure. However, to achieve high data rates with reliability in power line communication (PLC), robust signal processing techniques are required to mitigate channel distortion and noise. Orthogonal frequency division multiplexing (OFDM) as a multicarrier modulation technique has been standardized for PLC; however, to further enhance the quality of communication, wavelet OFDM (WOFDM) has been proposed as a suitable choice. In this article, OFDM‐based and WOFDM‐based PLC systems are studied, and overlap frequency domain equalization (OFDE) as a robust and efficient equalization technique is presented. Moreover, to enhance the efficiency of the OFDE, linear precoding (LP) is also suggested for fast Fourier transform and wavelet transform–based filter bank transceivers over the PLC channel. Performance of the proposed LP‐based OFDM‐OFDE and LP‐based WOFDM‐OFDE systems is compared with previously proposed equalization structures in terms of bit error rate, peak‐to‐average power ratio, and computational complexity via computer simulations. Furthermore, the performance of proposed architectures is also compared with classical equalization techniques under impulse noise with different intensities. Results show that not only the proposed LP‐based WOFDM‐OFDE transceiver performs better than the previous equalization models but also the LP‐based OFDM‐OFDE at the expense of slight increment in computational complexity.

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Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

Cited by 31 publications

References 10 publications

Mitigation of Periodic Impulsive Noise in OFDM-Based Power-Line Communications

Mitigation of Periodic Impulsive Noise in OFDM-Based Power-Line Communications

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Linear precoded wavelet OFDM‐based PLC system with overlap FDE for impulse noise mitigation

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