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About An improved least squares channel estimation algorithm for coherent optical FBMC/OQAM system
<p>https://doi.org/10.1016/j.optcom.2019.01.012<br></p>''In this paper we propose an improved least squares (LS) based channel estimator for 60 Gbps optical filter bank<br> multicarrier with off-set quadrature amplitude modulation (FBMC/OQAM) system by employing an interference<br> suppression technique based on discrete Fourier transform (DFT). The interference approximation method<br> (IAM) is used to combat the inherent intrinsic interference in FBMC/OQAM system, however, residual intrinsic<br> interference still exists in the system and it has significant impact to the LS channel estimator. The proposed<br> technique suppresses the residual intrinsic interference and channel noise effects in the estimated optical channel<br> impulse response by adaptive optimal channel energy criterion. Simulation results show that, the improved<br> channel estimator is capable of estimating the channel that includes attenuation and chromatic dispersion, and<br> suppressing the residual intrinsic interference and channel noise more effectively than the conventional LS-based<br> channel estimator. The proposed approach is an appropriate alternative for optical FBMC/OQAM system with<br> good trade-off between complexity and performance."
Detailed Information
| Author: | K. A. Alaghbari, H. S. Lim, T. Eltaif |
|---|---|
| Publication Year: | 2019 |
| Pages: | 7 |
| Language: | other |
| File Size: | 1.3298 |
| Format: | |
| Price: | FREE |
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