Abstract
An orbital angular momentum (OAM) based LDPC-coded modulation scheme suitable for use in FSO communication is proposed. We demonstrate that the proposed scheme can operate under strong atmospheric turbulence regime and enable 100 Gb/s optical transmission while employing 10 Gb/s components. Both binary and nonbinary LDPC-coded OAM modulations are studied. In addition to providing better BER performance, the nonbinary LDPC-coded modulation reduces overall decoder complexity and latency. The nonbinary LDPC-coded OAM modulation provides a net coding gain of 9.3 dB at the BER of 10-8. The maximum-ratio combining scheme outperforms the corresponding equal-gain combining scheme by almost 2.5 dB.
Original language | English (US) |
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Pages (from-to) | 24722-24728 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 18 |
Issue number | 24 |
DOIs | |
State | Published - Nov 22 2010 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics