[1] KHALIGHI A M, UYSAL M. Survey on free space optical communication: a communication theory perspective[J]. IEEE Communications Surveys & Tutorials, 2014, 16(4): 2231-2258.
[2] KIM I I, KOREVAAR E. Availability of free space optics (FSO) and hybrid FSO/RF systems[J]. Proceedings of the SPIE, 2001, 4530: 84-95. doi: 10.1117/12.449800
[3] NADEEM F, KVICERA V, AWAN M, et al. Weather effects on hybrid FSO/RF communication link[J]. IEEE Journal on Selected Areas in Communications, 2009, 27(9): 1687-1697. doi: 10.1109/JSAC.2009.091218
[4] AHMED D, HAYSSAM D, TAREQ Y, et al. Hybrid radio/free-space optical design for next generation backhaul systems[J]. IEEE Transactions on Communications, 2016, 64(6): 2563-2577. doi: 10.1109/TCOMM.2016.2557789
[5] USMAN M, YANG C H, ALOUINI S M. Practical switching-based hybrid FSO/RF transmission and its performance analysis[J]. IEEE Photonics Journal, 2014, 6(5): 1-13.
[6] ZHANG W, HRANILOVIC S, SHI C. Soft-switching hybrid FSO/RF links using short-length raptor codes: Design and implementation[J]. IEEE Journal on Selected Areas in Communications, 2009, 27(9): 1698-1708. doi: 10.1109/JSAC.2009.091219
[7] TAPSE H, BORAH K D. Hybrid optical/RF channels: characterization and performance study using low density parity check codes[J]. IEEE Transactions on Communications, 2009, 57(11): 3288-3297. doi: 10.1109/TCOMM.2009.11.080170
[8] ESLAMI A, VANGALA S, PISHRO N H. Hybrid channel codes for efficient FSO/RF communication systems[J]. IEEE Transactions on Communications, 2010, 58(10): 2926-2938. doi: 10.1109/TCOMM.2010.082710.090195
[9] KUMAR K, BORAH K D. Hybrid symbols for parallel optical/RF channels using BICM-ID[J]. Electronics Letters, 2011, 47(21): 1189-1190. doi: 10.1049/el.2011.2169
[10] WASIU O P, ZABIH G. BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence[J]. Journal of Lightwave Technology, 2009, 27(8): 967-973. doi: 10.1109/JLT.2008.2004950
[11] GAPPMAIR W, NISTAZAKIS H. Subcarrier PSK performance in terrestrial FSO links impaired by gamma-gamma fading, pointing errors, and phase noise[J]. Journal of Lightwave Technology, 2017, 35(9): 1624-1632. doi: 10.1109/JLT.2017.2685678
[12] UYSAL M, LI J, YU M. Error rate performance analysis of coded free-space optical links over gamma-gamma atmospheric turbulence channels[J]. IEEE Transactions Wireless Communications, 2006, 5(6): 1229-1233. doi: 10.1109/TWC.2006.1638639
[13] AL-HABASH A M, ANDREWS C L, PHILLIPS L R. Mathematical model for the irradiance probability density function of a laser beam propagating through turbulent media[J]. Optical Engineering, 2001, 40(8): 1554-1562. doi: 10.1117/1.1386641
[14] WU Y Q, CHEN M S, AO J. Performance analysis of LDPC codes in the gamma-gamma channel[J]. Laser Technology, 2013, 37(6): 833-837(in Chinese).
[15] XIAO C, ZHENG R Y, BEAULIEU C N. Novel sum-of-sinusoids simulation models for Rayleigh and Rician fading channels[J]. IEEE Transactions on Wireless Communications, 2006, 5(12): 3667-3679. doi: 10.1109/TWC.2006.256990
[16] SONG X, YANG F, CHENG J, et al. Ber of subcarrier MPSK and MDPSK systems in atmospheric turbulence[J]. Journal of Lightwave Technology, 2015, 33(1): 161-170. doi: 10.1109/JLT.2014.2384027
[17] SONG X, NIU M, CHENG J. Error rate of subcarrier intensity modulations for wireless optical communications[J]. IEEE Communications Letters, 2012, 16(4): 540-543. doi: 10.1109/LCOMM.2012.021612.112554