Analysis of an array-based high-speed integrated optical receiver in a FSO USRP OFDM testbed

Konferenz: European Wireless 2016 - 22th European Wireless Conference
18.05.2016 - 20.05.2016 in Oulu, Finnland

Tagungsband: European Wireless 2016

Seiten: 6Sprache: EnglischTyp: PDF

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Schulz, N.; Czylwik, A. (University of Duisburg-Essen, Chair of Communication Systems, Germany, Duisburg, Germany)

A new high-speed integrated wireless optical receiver with a large detection area is proposed. It is composed of a large number of identical optical receivers, each consisting of a high-speed photodiode, and a subsequent low-noise amplifier. The output signals of all receiver paths are combined by an adding circuit such that the signal-to-noise ratio (SNR) can be improved significantly. This paper first introduces the N array-based optical receiver circuit and simulation results in regard to its SNR. The results are experimentally verified with circuits consisting of N=1 and N=5 receiver paths in a free space optics (FSO) orthogonal frequency division multiplexing (OFDM) testbed to verify the results obtained by the theoretical approach.