A novel interpolation algorithm for pilot-assisted channel estimation in DDO-OFDM system

Lilong Liu

doi:10.1117/12.904278

14 December 2011 A novel interpolation algorithm for pilot-assisted channel estimation in DDO-OFDM system

Lilong Liu

Proceedings Volume 8309, Optical Transmission Systems, Subsystems, and Technologies IX; 83092K (2011) https://doi.org/10.1117/12.904278
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

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.

Citation Download Citation

Lilong Liu "A novel interpolation algorithm for pilot-assisted channel estimation in DDO-OFDM system", Proc. SPIE 8309, Optical Transmission Systems, Subsystems, and Technologies IX, 83092K (14 December 2011); https://doi.org/10.1117/12.904278

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