Title :
Performance of free-space optical MIMO systems using SC-QAM over atmospheric turbulence channels
Author :
Ha Duyen Trung ; Vu, Bach T. ; Pham, Anh T.
Author_Institution :
Sch. of Electron. & Telecommun., Hanoi Univ. of Sci. & Technol., Hanoi, Vietnam
Abstract :
We theoretically analyze the performance of free-space optical (FSO) multiple-input multiple-output (MIMO) systems using rectangular sub-carrier quadrature modulation (SC-QAM) signaling. The systems´s average symbol-error rate (ASER) is derived taking into account the atmospheric turbulence effects on the FSO MIMO channel, which is modeled by lognormal and the gamma-gamma processes for the cases of weak-to-strong turbulence conditions. We quantitatively discuss the influence of turbulence strength, link distance and different MIMO configurations on the ASER. We also derive and discuss the FSO MIMO average (ergodic) channel capacity (ACC), which is expressed in terms of average spectral efficiency (ASE), under the impact of various channel conditions.
Keywords :
MIMO communication; atmospheric turbulence; channel capacity; log normal distribution; optical communication; optical modulation; quadrature amplitude modulation; ACC; ASE; FSO MIMO average channel capacity; SC-QAM; atmospheric turbulence channels; average spectral efficiency; average symbol-error rate; free-space optical MIMO systems; free-space optical multiple-input multiple-output systems; gamma-gamma processes; link distance; lognormal processes; rectangular subcarrier quadrature modulation signaling; turbulence strength; weak-to-strong turbulence conditions; Atmospheric modeling; MIMO; Manganese; Optical fiber communication; Optical receivers; Quadrature amplitude modulation; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICC.2013.6655156
