What is it about?
A simple data-aided scheme for sampling clock synchronisation in reduced-guard-interval coherent optical OFDM (RGI-CO-OFDM) systems is proposed. In the proposed scheme, the sampling clock offset is estimated by using the training symbols reserved for channel estimation, thus avoiding extra training overhead
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Why is it important?
The proposed scheme does not require any additional hardware or training overhead and can compensate for up to the standard sampling clock offset of 200 ppm with low estimation error and negligible optical signal-to-noise ratio (OSNR) penalty
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This page is a summary of: Simple sampling clock synchronisation scheme for reduced-guard-interval coherent optical OFDM systems, Electronics Letters, November 2015, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/el.2015.3064.
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