کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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849972 | 909277 | 2014 | 5 صفحه PDF | دانلود رایگان |
This paper delineates a novel coding technique, a combination of coding and multiplexing technique, known as mapping multiplexing technique (MMT). A mapping algorithm is used to multiplex four channels, each of which running at 10 Gbit/s. Up to four bits per symbol at a symbol rate of 10 Gboud was successfully transmitted over a single wavelength. Compare to the conventional return to zero (RZ) and none-return to zero (NRZ)-time division multiplexing (TDM) more than 75% and 50% reduction in the spectral width are achieved, respectively. Calculated chromatic dispersion tolerance of ±130 ps/nm is achieved for the 40 Gbit/s MMT transmission system at the expense of ∼2 dB degradation in the receiver sensitivity (compared to NRZ) due to an increase in the number of levels and in the signal dependency of signal-spontaneous beat noise. In comparison with conventional 4-ary system, the proposed system depicts ∼6.5 dB improvement in terms of receiver sensitivity.
Journal: Optik - International Journal for Light and Electron Optics - Volume 125, Issue 2, January 2014, Pages 639–643