Performance analysis of voice transfer using multi-transceiver optical communication structures

Free-space-optical (FSO) communication has recently attracted attention as a complementary alternative to radio frequency (RF) wireless networks. However, the directionality of FSO communication is prone to mobility which requires maintenance of line-of-sight (LOS) alignment between FSO transceivers. By using multiple transceivers per node and automatically detecting neighbor nodes that are in LOS each other, we showed how to maintain the LOS alignment on FSO nodes. In this paper, we present a prototype implementation of such multi-transceiver electronically-steered communication structures to measure the performance of a voice file transfer over such multi-transceiver systems. We show that by using multiple directional transceivers and LOS detection and establishment protocol, we can assign multiple logical data streams to appropriate physical transceivers and transfer different voice files simultaneously to multiple FSO nodes with tolerable disruptions and overhead.