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The Impact of Polarization-Dependent Loss on the Constant Modulus Algorithm for Varying Number of Fiber Spans Based on an Outage Criterion

Mehrnaz Tavan (Institutionen för signaler och system, Kommunikationssystem) ; Henk Wymeersch (Institutionen för signaler och system, Kommunikationssystem)
Proc. Wireless and Optical Communications Conference (WOCC) (2011)
[Konferensbidrag, refereegranskat]

We investigate the effect of polarization-dependent loss (PDL) on the constant modulus algorithm (CMA) in 4-QAM and 16-QAM polarization multiplexed (PolMux) systems with varying number of fiber spans and different PDL values. To quantify this effect, outage probability is introduced as the probability of having a signal-to-noise ratio (SNR) degradation smaller than 1 dB 99% of the time. We observe that by increasing the number of fiber spans, the SNR penalty for CMA reaches a limiting value. Moreover, in the 16-QAM multi-span case, the effect of PDL on CMA depends on the amount of PDL, while for 4-QAM, the effect of PDL on CMA is insensitive to the amount of PDL. These results will provide guidelines for designing systems and adjusting transmission power.

Nyckelord: blind equalization; Coherent optical communication; constant modulus algorithm; polarization-dependent loss



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Denna post skapades 2011-08-24. Senast ändrad 2011-08-26.
CPL Pubid: 144851

 

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