Title :
Polarization-multiplexed LDPC-coded QAM robust to I-Q imbalance and polarization offset
Author :
Djordjevic, Ivan B. ; Xu, Lei ; Minkov, Lybomir L. ; Wang, Ting ; Zhang, Shaoliang
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Abstract :
Polarization-multiplexed LDPC-coded QAM robust to I-Q imbalance and polarization offset is proposed. Efficient mitigation of I-Q imbalance and polarization offset is demonstrated with LDPC-coded turbo equalization by simultaneous MAP detection of symbols transmitted over two orthogonal polarizations. The proposed scheme is much more efficient in I-Q imbalance and polarization offset compensation than conventional approaches.
Keywords :
maximum likelihood estimation; multiplexing; parity check codes; quadrature amplitude modulation; turbo codes; I-Q imbalance; LDPC-coded turbo equalization; MAP detection; QAM; orthogonal polarization; polarization offset compensation; polarization-multiplexed LDPC; Bit error rate; Decoding; Digital signal processing; Multiplexing; Parity check codes; Quadrature amplitude modulation; Robustness;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682630
