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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 5 — Mar. 1, 2013
  • pp: 742–744

Investigation of interference in multiple-input multiple-output wireless transmission at W band for an optical wireless integration system

Xinying Li, Jianjun Yu, Ze Dong, Junwen Zhang, Nan Chi, and Jianguo Yu  »View Author Affiliations


Optics Letters, Vol. 38, Issue 5, pp. 742-744 (2013)
http://dx.doi.org/10.1364/OL.38.000742


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Abstract

We experimentally investigate the interference in multiple-input multiple-output (MIMO) wireless transmission by adjusting the relative locations of horn antennas (HAs) in a 100 GHz optical wireless integration system, which can deliver a 50Gb/s polarization-division-multiplexing quadrature-phase-shift-keying signal over 80 km single-mode fiber-28 and a 2×2 MIMO wireless link. For the parallel 2×2 MIMO wireless link, each receiver HA can only get wireless power from the corresponding transmitter HA, while for the crossover ones, the receiver HA can get wireless power from two transmitter HAs. At the wireless receiver, polarization demultiplexing is realized by the constant modulus algorithm (CMA) in the digital-signal-processing part. Compared to the parallel case, wireless interference causes about 2 dB optical signal-to-noise ratio penalty at a bit-error ratio (BER) of 3.8×103 for the crossover cases if similar CMA taps are employed. The increase in CMA tap length can reduce wireless interference and improve BER performance. Furthermore, more CMA taps should be adopted to overcome the severe wireless interference when two pairs of transmitter and receiver HAs have different wireless distances.

© 2013 Optical Society of America

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: December 27, 2012
Manuscript Accepted: January 28, 2013
Published: February 26, 2013

Citation
Xinying Li, Jianjun Yu, Ze Dong, Junwen Zhang, Nan Chi, and Jianguo Yu, "Investigation of interference in multiple-input multiple-output wireless transmission at W band for an optical wireless integration system," Opt. Lett. 38, 742-744 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-5-742


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