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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 7478–7487

A novel transform domain processing based channel estimation method for OFDM radio-over-fiber systems

Li Tao, Jianjun Yu, Qi Yang, Yufeng Shao, Junwen Zhang, and Nan Chi  »View Author Affiliations


Optics Express, Vol. 21, Issue 6, pp. 7478-7487 (2013)
http://dx.doi.org/10.1364/OE.21.007478


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Abstract

In this paper, a transform domain processing (TDP) based channel estimation method for orthogonal frequency-division multiplexing (OFDM) Radio-over-Fiber (RoF) systems is proposed. Theoretically investigation shows that TDP can greatly reduce the number of required training symbols. An 8 x 4.65 Gb/s multi-user OFDM RoF system over 40 km fiber link and 60 GHz wireless link is experimentally demonstrated utilizing TDP scheme. Compared with conventional time domain averaging (TDA) scheme, the overhead can be reduced from several tens of training symbols to merely one symbol and the receiver sensitivity has been improved by 1.8 dB at BER of 3.8 x 10−3. The calculated BER performance for 8 wireless users clearly validates the feasibility of this TDP-based channel estimation method.

© 2013 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 3, 2012
Revised Manuscript: February 22, 2013
Manuscript Accepted: March 4, 2013
Published: March 19, 2013

Citation
Li Tao, Jianjun Yu, Qi Yang, Yufeng Shao, Junwen Zhang, and Nan Chi, "A novel transform domain processing based channel estimation method for OFDM radio-over-fiber systems," Opt. Express 21, 7478-7487 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-6-7478


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