Abstract
In this letter, we propose a modified time-domain blind intercarrier interference (ICI) mitigation method for non-constant modulus format (e.g., 16-QAM) in coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems. The new algorithm is derived from a blind ICI (BL-ICI) compensation algorithm over constant modulus format for wireless networks. We proposed new power estimation methods for the algorithm to adapt to non-constant modulus format. Our new BL-ICI algorithm is demonstrated to be effective in removing the ICI in a simulated CO-OFDM system over various formats: 8-QAM, 16-QAM, 32-QAM and 64-QAM. It shares the same order of complexity with frequency domain decision-aided ICI compensation method and does not suffer from symbol decision errors.
Original language | English |
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Article number | 6654266 |
Pages (from-to) | 2490-2493 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 25 |
Issue number | 24 |
DOIs | |
Publication status | Published - 15 Dec 2013 |
Externally published | Yes |
Keywords
- CO-OFDM
- ICI
- laser phase noise
- phase estimation
- QAM
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering