Title :
Orthogonal space-time block codes for free-space IM/DD optical links
Author :
Premaratne, M. ; Zheng, F.-C.
Author_Institution :
Adv. Comput. & Simulation Lab. (AXL), Clayton
Abstract :
Use of orthogonal space-time block codes (STBCs) with multiple transmitters and receivers can improve signal quality. However, in optical intensity modulated signals, output of the transmitter is non-negative and hence standard orthogonal STBC schemes need to be modified. A generalised framework for applying orthogonal STBCs for free-space IM/DD optical links is presented.
Keywords :
block codes; intensity modulation; optical links; orthogonal codes; space-time codes; free-space IM-DD optical links; intensity modulation-direct detection; optical intensity modulated signals; orthogonal space-time block codes schemes; signal quality;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20073712
