A novel combined channel estimation algorithm for elastic optical networks

A novel combined channel estimation algorithm for elastic optical networks To mitigate the mismatch of granularities between fixed grid and client traffic, the elastic optical network (EON) was proposed by using optical orthogonal frequency division multiplexing (OFDM). In EONs, every optical signal is generated with just enough sub-carriers. However, due to the consideration of optical OFDM, the fiber dispersion and cross talk between channels severely limit the communication system performance in EONs. Thus, it is very necessary to design effective channel estimation algorithms for the purpose of ensuring reliable and long-distance signal transmission. Therefore, in this paper, we design an identified channel estimation algorithm called as combined channel estimation algorithm (CCEA), with the joint consideration of improved discrete Fourier transformation and wavelet threshold de-noising method. Our CCEA avoids the generation of high-frequency components for the purpose of obtaining the accurate channel estimation and eliminates the noise information owned by effective sampling points using wavelet threshold de-noising method. The simulation results in our communication system for EONs demonstrate that: whether the bit error rate is higher or lower than the forward error correction limit, our algorithm always satisfies the requirements of communication systems well. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

A novel combined channel estimation algorithm for elastic optical networks

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-016-0610-y
Publisher site
See Article on Publisher Site

Abstract

To mitigate the mismatch of granularities between fixed grid and client traffic, the elastic optical network (EON) was proposed by using optical orthogonal frequency division multiplexing (OFDM). In EONs, every optical signal is generated with just enough sub-carriers. However, due to the consideration of optical OFDM, the fiber dispersion and cross talk between channels severely limit the communication system performance in EONs. Thus, it is very necessary to design effective channel estimation algorithms for the purpose of ensuring reliable and long-distance signal transmission. Therefore, in this paper, we design an identified channel estimation algorithm called as combined channel estimation algorithm (CCEA), with the joint consideration of improved discrete Fourier transformation and wavelet threshold de-noising method. Our CCEA avoids the generation of high-frequency components for the purpose of obtaining the accurate channel estimation and eliminates the noise information owned by effective sampling points using wavelet threshold de-noising method. The simulation results in our communication system for EONs demonstrate that: whether the bit error rate is higher or lower than the forward error correction limit, our algorithm always satisfies the requirements of communication systems well.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Feb 16, 2016

References

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