Average capacity of wireless optical multiple input multiple output system with spatial correlation

作者：Wang Huiqin; Wang Xue; Sun Jianfeng; Cao Minghua

来源：Acta Optica Sinica, 2016, 36(7): 0706003.

DOI：10.3788/AOS201636.0706003

• Antenna spacings
• Atmospheric channels
• Average capacities
• Average channel capacities
• Lognormal fading channels
• Spatial correlations
• Wireless optical communication systems
• Wireless-optical

In the atmospheric channel, the spatial correlation among the beams of wireless optical multiple input multiple output (MIMO) system caused by the antenna spacing and the channel fading can seriously affect the wireless optical communication system performance. We proposed a channel model for the correlative wireless optical MIMO channel based on the pulse position modulation (PPM), and the average channel capacity in lognormal fading channel is derived by using the Wilkinson method. The simulation results indicate that the average channel capacity is decreased due to the spatial correlation, and the effect is enhanced with the growth of the total energy. In addition, in a completely correlative channel, the impact of transmitter correlation on the channel capacity is more obvious than that of the receiver correlation.

• 出版日期2016