Spatial correlation for transmitters in spatial MIMO optical wireless links with Gaussian-beam waves and aperture effects

SER performance analysis of MPPM FSO system with three decision thresholds over exponentiated Weibull fading channels

“…However, the performance of FSO system will be severely affected by the scintillation due to the intensity fluctuations at the received signal by atmospheric turbulence [3,4]. In order to improve the system performance in the presence of turbulence, a variety of techniques were proposed, among which spatial diversity and aperture averaging have been extensively investigated [5][6][7][8]. For spatial diversity, multiple transmitters and receivers are normally required although it is an attractive method to mitigate fading of the received signals [5,6].…”

“…In order to improve the system performance in the presence of turbulence, a variety of techniques were proposed, among which spatial diversity and aperture averaging have been extensively investigated [5][6][7][8]. For spatial diversity, multiple transmitters and receivers are normally required although it is an attractive method to mitigate fading of the received signals [5,6]. Aperture averaging technique, however, is another effective approach to enhance the FSO system performance for its simplicity and low cost.…”

“…SER for(5,2) MPPM under moderate turbulence with DDT and ODT over three different receiver apertures.…”

A MPR optimization algorithm for FSO communication system with star topology

“…In recent years, the free space optical (FSO) communication system has received considerable attention, because of many advantages such as interference free to radio frequency (RF) communication systems, low power consumption and wide bandwidth on unregulated spectrum [1]. FSO communication systems mainly use the point-to-point topology and the star topology.…”

BER analysis of BPSK-SIM-based SISO and MIMO FSO systems in strong turbulence with pointing errors

“…The spatial correlation between a pair of constituent transmitters in an MIMO system is investigated in [11]. In a recent work, a coherent MIMO architecture was proposed for FSO communication and BER expressions are derived using a series expansion for gamma-gamma, K-distributed, and negative exponential turbulences [12].…”