Study, analysis and application of optical OFDM, single carrier (SC) and MIMO in intensity modulation direct detection (IM/DD)

Abstract

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Performance Analysis of Indoor Diffuse VLC MIMO Channels Using Angular Diversity Detectors

“…Where δ 2 shot is the shot noise variance and δ 2 thermal is the thermal noise variance as calculated in equations (7) and (10) of [6] respectively. Thus the noise power is given by δ 2 =N 0 B, where N 0 is the noise power spectral density and B is communication bandwidth.…”

“…2πV 2 cos ms (σ)cos(θ), 0 θ ϕ 1/2 0, θ > ϕ 1/2 (10) and the incident optical power to the receiver, see [6], [19] can be calculated by…”

“…For the RC techniques we use the BER Expression described in equation (18) and calculate throughput given by [6]:…”

“…Where R is the maximum rate of the scheme and γ is the packet error probability which is given by [6]:…”

“…In LOS systems high data rates of the order of gigabits per second can be achieved [1], [3] but these systems are vulnerable to obstacles (shadowing) because of their directionality. In diffuse systems, several propagations paths exist from the LED to photo-diode (PD) which makes the system robust to shadowing [4], however the path loss can be higher than for LOS systems and multipath creates inter-symbol interference (ISI) for the case of large area indoor environments [2], [5], [6]. The simultaneous use of multiple transmitters and receivers e.g.…”