Vol. 43, Issue 3, pp. 497-503
Keywords
data transmission, optical fiber, MIMO, spectral efficiency
Abstract
Spectral efficiency of incoherent optical MIMO systems is investigated. It is proved that under the best conditions (no channel crosstalk at the receiver) incoherent optical MIMO transmission gives potentially a better spectral efficiency than single channel transmission above a certain value of SNR in a single channel system, which varies from 9 dB for 2×2 MIMO to 12.3 dB for 4×4 MIMO. However, in practical optical 2×2 MIMO transmission, this border value of SNR is much higher and is around 25–30 dB.