Heterodyne direct-detection OOFDM system with low sampling rate
Chinese Optics Letters, Vol. 8, Issue 9, pp. 819-822 (2010)
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Abstract
A method of multi-channel receiving for high bit rate heterodyne direct-detection optical orthogonal frequency-division-multiplexing (OOFDM) system is proposed to reduce the sampling rate demand of analog-to-digital converter (ADC). The sampling rate of ADCs can be reduced to 1/N that of the original signal bandwidth in an N-channel receiving system. Aided by a succeeding digital signal processing (DSP) at the receiver, aliasing free signal can be recovered. A back-to-back experimental result is given for a 4-channel system, based on which, a down conversion process for heterodyne can be reduced. The signal rebuilding algorithm is given and analyzed in its complexity and noise tolerance.
© 2010 Chinese Optics Letters
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4230) Fiber optics and optical communications : Multiplexing
Citation
Lin Cheng, He Wen, Xiaoping Zheng, Hanyi Zhang, and Yili Guo, "Heterodyne direct-detection OOFDM system with low sampling rate," Chin. Opt. Lett. 8, 819-822 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-9-819
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