Generalized Selection Multiuser Scheduling for the MIMO FSO Communication System and Its Performance Analysis

IEEE Photonics Journal

Weidong Wang¹  Li Chen¹  Min Qin¹ 

[1] Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, China;

关键词: Atmospheric turbulence;    free-space optics;    multiple-input-multiple-output (MIMO);    multiuser diversity.;   

DOI  :  10.1109/JPHOT.2016.2606247

来源: DOAJ

【 摘 要 】

This paper analyzes the impact of generalized selection multiuser scheduling on the performance of the multiple-input-multiple-output (MIMO) free-space optical (FSO) communication system. We consider a general scenario that the point-to-multipoint system consists of a central transmitter equipped with K aperture groups containing M transmit apertures and K users equipped with N receive apertures communicating over gamma-gamma turbulence FSO channels. For the MIMO links between the central node and user, we derive the combining signal-to-noise ratio (SNR) distributions of MIMO repetition coding and MIMO transmit laser selection. Then, a statistics analysis is presented for the multiuser diversity scheme in which the user with the kth best combining SNR is selected. Based on the analysis, the closed-form expressions of the outage probability are derived, and the diversity benefit provided by the channel fluctuations is further discussed. Numerical results verify the accuracy of these analytical results.

【 授权许可】

Unknown