Comparison of interpolation methods for pilot aided estimation in direct-detection optical OFDM system

ABSTRACT We experimentally compare four commonly used interpolation algorithms including linear interpolation, spline interpolation, low‐pass interpolation and time domain interpolation for channel estimation based on pilot in baseband direct‐detected optical orthogonal frequency division multiplexi...

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Bibliographic Details
Published inMicrowave and optical technology letters Vol. 55; no. 11; pp. 2604 - 2608
Main Authors Cao, Zizheng, Wen, Guangqian, Chen, Long, Shu, Qinglong, Chen, Lin
Format Journal Article
LanguageEnglish
Published New York Blackwell Publishing Ltd 01.11.2013
Wiley Subscription Services, Inc
Subjects
Channel estimation
Channels
direct-detection
Interpolation
Microwaves
OOFDM
Orthogonal Frequency Division Multiplexing
pilot
Pilots
Reproduction
Splines
Time domain
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Summary:ABSTRACT We experimentally compare four commonly used interpolation algorithms including linear interpolation, spline interpolation, low‐pass interpolation and time domain interpolation for channel estimation based on pilot in baseband direct‐detected optical orthogonal frequency division multiplexing system. The results show that the time domain DFT interpolation method exhibits the best BER performance and the most compact constellation. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2604–2608, 2013
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ISSN:0895-2477
1098-2760
DOI:10.1002/mop.27915