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Proceedings Paper

A novel interpolation algorithm for pilot-assisted channel estimation in DDO-OFDM system
Author(s): Lilong Liu
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Paper Abstract

Pilot patterns and interpolation algorithms are of great importance to the performance of pilot-assisted channel estimation in optical OFDM systems. Traditionally a number of pilot tones are periodically inserted into the OFDM symbols for the estimation of the channel state, for instance, the least-square (LS) linear interpolation was a traditional approach to estimate the phase rotation of the subcarriers. In this paper, we present a novel interpolation algorithm with better performance than linear interpolation method while maintain similar complexity. Simulations in a 10 Gb/s direct detection optical OFDM (DDO-OFDM) system show that the algorithm greatly improves the constellation convergence.

Paper Details

Date Published: 14 December 2011
PDF: 6 pages
Proc. SPIE 8309, Optical Transmission Systems, Subsystems, and Technologies IX, 83092K (14 December 2011); doi: 10.1117/12.904278
Show Author Affiliations
Lilong Liu, Shanghai Jiao Tong Univ. (China)

Published in SPIE Proceedings Vol. 8309:
Optical Transmission Systems, Subsystems, and Technologies IX
Xiang Liu, Editor(s)

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