Comparative Analysis of Power Consumption in the Implementation of Arithmetic Algorithms

Faria, Alexandre Wagner Chagas; Aguiar, Leandro Pfleger de; Lara, D; Loureiro, Antônio A. F.

doi:10.1109/trustcom.2011.256

Cited by 4 publications

(2 citation statements)

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“…After obtaining the filter size, it is possible to estimate the computational complexity associated with CD compensation. Our estimation is based on the number of real multiplications, which is the dominating parameter [32]. We focus on frequency-domain equalization (FDE), because of its computational efficiency in comparison with time-domain equalization for a sufficient filter length [28] [33].…”

Section: Computational Complexity Analysismentioning

confidence: 99%

Adaptive Optical Transceivers: Concepts and Challenges

Mello

Rozental

Lima

et al. 2014

Journal of Communication and Information Systems

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Coherent detection and digital signal processing techniques have driven a remarkable development in optical transport technologies, enabling channels at 100 Gb/s to be transmitted over thousands of kilometers. Future optical communications systems will achieve even higher data rates (> Gb/s) through the deployment of superchannels, a designation for subcarrier multiplexing in the optical domain. In addition, a software-defined configuration of modulation format, transmission rate and coding scheme will enable advanced features such as automatic bandwidth provisioning and optimized spectrum allocation. However, compared with the wireless environment, optical systems are still very primitive in terms of intelligence, because their installation and operation require highly skilled manpower. The solution to this problem are adaptive optical transceivers, able to sense the channel conditions and to adapt their operation parameters to extend reach and reduce power consumption. In this paper we review a set of enabling concepts and algorithms of an adaptive optical transceiver, and discuss the challenges for its successful implementation.

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Section: Computational Complexity Analysismentioning

confidence: 99%

Adaptive Optical Transceivers: Concepts and Challenges

Mello

Rozental

Lima

et al. 2014

Journal of Communication and Information Systems

View full text Add to dashboard Cite

show abstract

“…per transmitted bit as the figure of merit, since multiplication is the dominant power consuming hardware-implemented operation, in comparison with addition and storage[113]. It is well known that thanks to the fast Fourier transform (FFT) algorithm, signal convolution with a sufficiently long FIR filter is more efficiently implemented in the frequency domain, using a data overlapping method (either overlap-&-save, or overlap-&-add)[50].…”

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confidence: 99%