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

被引：0
|
作者：
Liu, Lilong [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Network, Shanghai 200240, Peoples R China
来源：
2011 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE AND EXHIBITION (ACP) | 2012年
关键词：
Optical OFDM; channel estimation; pilot tone; interpolation;
D O I：
10.1117/12.904278
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Pilot patterns and interpolation algorithms are of great importance to the perfonnance 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.
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页数：6
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