Adaptive pulse-shaped OFDM with application to in-home power line communications

D'Alessandro, Salvatore; Tonello, Andrea M.; Lampe, Lutz

doi:10.1007/s11235-010-9410-3

Cited by 18 publications

(17 citation statements)

References 14 publications

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“…. , M − 1} is the sub-set of used (switched on) sub-channels that allows for satisfying a PSD mask with notches, as it is the case in broadband PLC systems [20]. Therefore, the received signal in the k-th sub-channel of the y-th node reads…”

Section: Plc System Modelmentioning

confidence: 99%

On rate improvements and power saving with opportunistic relaying in home power line networks

D'Alessandro

Tonello

2012

EURASIP J. Adv. Signal Process.

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In this article, we investigate the use of half duplex time division relay protocols to possibly provide achievable rate improvements, power saving, and coverage extension in home power line communication (PLC) networks. We consider a network where the communication between the source and the destination nodes follows an opportunistic protocol, namely, the relay is used whenever it allows with respect to the direct transmission: (a) for achievable rate improvements, under a power spectral density (PSD) mask constraint; or (b) for power saving, under a PSD mask and a rate target constraint. Opportunistic decode and forward (ODF), and opportunistic amplify and forward (OAF) are considered. At the physical layer, we assume the use of multi-carrier modulation. Under these assumptions, we find the optimal resource allocation, namely, the optimal power and time slot allocation, between the source and the relay nodes that maximizes the achievable rate, or minimizes the total transmitted power for both ODF and OAF. For the power minimization problem of ODF, we show that the joint problem of power and time slot allocation of DF is very hard to be solved and thus implemented. Therefore, to reduce complexity, we propose a simplified algorithm that considers two convex sub-problems. Through numerical results, we show that its performance is very close to the optimum. Finally, since over in-home PLC networks, the relay can only be placed in accessible points of the network, i.e., in outlets, or in the main panel, or in derivation boxes, for each opportunistic protocol, we also investigate the influence on performances from the relay position. Results are obtained using both measured channel responses and generated ones; thanks to the use of a statistically representative simulator. They show that significant rate improvements and power savings can be obtained as a function of the relay position and network size.

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Section: Plc System Modelmentioning

confidence: 99%

On rate improvements and power saving with opportunistic relaying in home power line networks

D'Alessandro

Tonello

2012

EURASIP J. Adv. Signal Process.

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“…The final term is considered as the propagation delay, with v p = C 0 2 indicating the velocity of propagation (C 0 velocity of light). It should be noted that the PLC channel model (1) shows an excellent agreement between theoretical parameters and measured values. For a PLC system with 15 paths, attenuation parameters a 0 = 0, a 1 = 2.5 × 10 −9 , κ = 1, and weighting factor g i along the ith path with distance d i are given in Table 1.…”

Section: Plc Channel Modelmentioning

confidence: 58%

“…They can offer high speed data, image, voice and video services to the customer end. Density, ubiquity and low cost implementation are the main advantages of PLC technology [1]. Unfortunately, the transmission of broadband signals over the PLC channel is facing several challenges.…”

Section: Introductionmentioning

confidence: 99%

OFDM-based power-line communication enhancement using a turbo coded adaptive impulsive noise compensator

Himeur

Boukabou

2015

Telecommun Syst

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In this paper, we propose a novel estimation and decoding scheme for power-line communication (PLC) systems in impulsive noise environments. The proposed scheme is based on the turbo coding combined with adaptive noise compensation to reduce burst errors and multipath effects. For this purpose, the PLC channel and noise models are introduced, then, the turbo encoder/decoder are inserted in the mapper/demapper and the pilot insertion block for the sake of enhancing preliminary estimation of the transmitted orthogonal frequency division multiplexing signals. The proposed impulsive noise compensator is based on the estimation of the impulse bursts using a new blanking/clipping function, and on the estimation of the signal to impulse noise ratio and the peak to average power ratio. Simulation results illustrate that receivers with combined turbo coding and the proposed noise compensator drastically outperform existing receivers under impulsive noise. In comparison to some existing schemes, the proposed scheme reaches its perfect performance in a reduced 15-paths environment, when the bit error rate and mean square error performance are tested. The improvements in SNR performance are more than 16 dB for BPSK modulation and can reach 12-20 dB for 16-QAM modulation, when a high impulsive noise level is considered.

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“…This affects the shape and distances of the side lobes in the frequency domain [28]. There are numerous types of window functions available for implementation such as Hamming, Barlett (triangular), Kaiser, Blackman, Raised Cosine (Hann), and so forth.…”

Section: Influence Of Windowing On Spectrum and Notch Shapementioning

confidence: 99%

An Overview of the HomePlug AV2 Technology

Yonge

Abad

Afkhamie

et al. 2013

Journal of Electrical and Computer Engineering

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HomePlug AV2 is the solution identified by the HomePlug Alliance to achieve the improved data rate performance required by the new generation of multimedia applications without the need to install extra wires. Developed by industry-leading participants in the HomePlug AV Technical Working Group, the HomePlug AV2 technology provides Gigabit-class connection speeds over the existing AC wires within home. It is designed to meet the market demands for the full set of future in-home networking connectivity. Moreover, HomePlug AV2 guarantees backward interoperability with other HomePlug systems. In this paper, the HomePlug AV2 system architecture is introduced and the technical details of the key features at both the PHY and MAC layers are described. The HomePlug AV2 performance is assessed, through simulations reproducing real home scenarios.

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Adaptive pulse-shaped OFDM with application to in-home power line communications

Cited by 18 publications

References 14 publications

On rate improvements and power saving with opportunistic relaying in home power line networks

On rate improvements and power saving with opportunistic relaying in home power line networks

OFDM-based power-line communication enhancement using a turbo coded adaptive impulsive noise compensator

An Overview of the HomePlug AV2 Technology

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