Title :
4×4 MIMO equalization to mitigate crosstalk degradation in a four-channel free-space orbital-angular-momentum-multiplexed system using heterodyne detection
Author :
Hao Huang ; Guodong Xie ; Yongxong Ren ; Yan Yan ; Changjing Bao ; Ahmed, Nova ; Ziyadi, M. ; Chitgarha, M. ; Neifeld, Mark ; Dolinar, Sam
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We demonstrate crosstalk degradation mitigation using 4×4 MIMO equalization on an orbital-angular-momentum-multiplexed free-space data link with heterodyne detection. 20-Gbit/s QPSK signal with up to -4.8 dB crosstalk is recovered and the BER is reduced by two orders of magnitude.
Keywords :
MIMO communication; error statistics; optical crosstalk; optical links; optical modulation; quadrature phase shift keying; space division multiplexing; 4×4 MIMO equalization; BER; QPSK signal; SDM; bit rate 20 Gbit/s; crosstalk degradation mitigation; four-channel free-space orbital-angular-momentum-multiplexed system; free-space data link; heterodyne detection; space-division-multiplexing;
Conference_Titel :
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-759-5
DOI :
10.1049/cp.2013.1509
