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

Li Tao | Zendy; Jianjun Yu | Zendy; Qi Yang | Zendy; Yufeng Shao | Zendy; Junwen Zhang | Zendy; Nan Chi | Zendy

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

Author(s) -

Li Tao,

Jianjun Yu,

Qi Yang,

Yufeng Shao,

Junwen Zhang,

Nan Chi

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.007478

Subject(s) - orthogonal frequency division multiplexing , radio over fiber , computer science , channel (broadcasting) , electronic engineering , overhead (engineering) , wireless , multiplexing , time domain , bit error rate , telecommunications , engineering , computer vision , operating system

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.

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