Receiver Optimization in Turbulent Free-Space Optical MIMO Channels With APDs and Q-ary PPM

Author

Cvijetic, Neda ; Wilson, Stephen G. ; Brandt-Pearce, Maïté

Author_Institution

Charles L. Brown Dept. of Electr. & Comput. Eng., Virginia Univ., Charlottesville, VA

Volume

19

Issue

2

fYear

2007

Firstpage

103

Lastpage

105

Abstract

We propose an accurate, robust avalanche photodiode (APD) receiver optimization scheme for multiple-input/multiple-output (MIMO) free-space optical links with Q-ary pulse position modulation in the presence of atmospheric turbulence. Through extensive error probability (P_e) analysis, we show that selecting the APD gain such that the nonfading receiver-array signal-to-noise ratio is maximized essentially minimizes P_e in turbulent MIMO channels with M=2 transmitters and N=2 receivers, for several turbulence and background-radiation levels of interest

Keywords

MIMO communication; atmospheric turbulence; avalanche photodiodes; error statistics; optical links; optical receivers; telecommunication channels; APD; Q-ary PPM; atmospheric turbulence; avalanche photodiode; extensive error probability; multiple-input/multiple output free-space optical links; optical MIMO channels; receiver optimization; Avalanche photodiodes; Error probability; MIMO; Optical fiber communication; Optical modulation; Optical pulses; Optical receivers; Optical transmitters; Pulse modulation; Robustness; Atmospheric turbulence; avalanche photodiode (APD); free-space optical (FSO) communication; multiple -input/multiple-output (MIMO) processing; pulse-position modulation (PPM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.889105

Filename

4049843