MIMO techniques for high data rate free space optical communication system in log-normal channel

Mohamed R. Abaza, Raed Mesleh, Ali Mansour, Ayman Alfalou
2013 2013 The International Conference on Technological Advances in Electrical, Electronics and Computer Engineering (TAEECE)  
Multiple input multiple output (MIMO) technique with equal gain combining (EGC) is considered in this work to enhance the data rate of free-space optical communication (FSO) system in log-normal channel. In FSO system, light propagating in free space is used to transmit data for communication system. 256-ary pulse position modulation (PPM) using intensity modulation with direct detection (IM/DD) as a power efficient system is employed using PIN receiver. Obtained results demonstrate that
more » ... cant boost of data rate can be achieved using MIMO techniques. Data rate enhances from 350 Mbps to 800 Mbps when using 2 × 2 MIMO configuration. As well, 1 Gbps is reported for 4 × 4 MIMO system. These enhancements are achieved without any bandwidth or power expansions and the bit error rate (BER) at the receiver is maintained below 10 −3 . Index Terms-Free-space optical communications (FSO), Mary pulse position modulation (M -ary PPM), Multiple input multiple output (MIMO), Log-normal channel, PIN receiver.
doi:10.1109/taeece.2013.6557185 fatcat:wi56v4b2ubfw3bxqpazzh3goqy