PMD compensation in multilevel coded-modulation schemes with coherent detection using BLAST algorithm and iterative polarization cancellation

Ivan B. Djordjevic, Lei Xu, Ting Wang
2008 Optics Express  
We present two PMD compensation schemes suitable for use in multilevel (M≥2) block-coded modulation schemes with coherent detection. The first scheme is based on a BLAST-type polarization-interference cancellation scheme, and the second scheme is based on iterative polarization cancellation. Both schemes use the LDPC codes as channel codes. The proposed PMD compensations schemes are evaluated by employing coded-OFDM and coherent detection. When used in combination with girth-10 LDPC codes those
more » ... 10 LDPC codes those schemes outperform polarization-time coding based OFDM by 1 dB at BER of 10 -9 , and provide two times higher spectral efficiency. The proposed schemes perform comparable and are able to compensate even 1200 ps of differential group delay with negligible penalty. OCIS codes: (060.4510) Optical communications; (999.9999) Polarization mode dispersion (PMD); (060.4080) Modulation; (060.4230) Multiplexing; (999.9999) Orthogonal frequency division multiplexing; (999.9999) Low-density parity-check (LDPC) codes, (999.9999) Bell Laboratories layered space-time architecture (BLAST); (999.9999) Iterative polarization interference cancellation. #96906 -$15.
doi:10.1364/oe.16.014845 pmid:18795021 fatcat:aslspoafnbf5xmozd76liqsjw4