LDPC-coded orbital angular momentum (OAM) modulation for free-space optical communication

被引：105
|
作者：
Djordjevic, Ivan B. [1 ]
Arabaci, Murat [1 ]
机构：
[1] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 24期
基金：
美国国家科学基金会;
关键词：
TRANSMISSION; TURBULENCE;
D O I：
10.1364/OE.18.024722
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2010 Optical Society of America
引用
收藏
页码：24722 / 24728
页数：7
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