On the Information Transfer Rate of SPAD Arrays

Elham Sarbazi, Majid Safari, Harald Haas

Research output: Contribution to conferencePaperpeer-review


In this paper the information transfer rate of a single-photon avalanche diode (SPAD) array is investigated. The SPAD array is modelled as a discrete-time Gaussian channel with signal-dependent mean and variance. The SPAD dead time is a parameter which affects the extent of this signal dependency. The SPAD array channel capacity and the properties of the capacityachieving input distributions are studied. Using a numerical algorithm, the capacity and the optimal input distributions subject to peak and average power constraints are obtained for
various array sizes, dead times and background count levels. Index Terms—Single-photon avalanche diode (SPAD), SPAD array, photon counting, dead time, capacity.
Original languageEnglish
Publication statusAccepted/In press - 15 Jan 2020
EventIEEE Wireless Communications and Networking Conference - Seoul, Korea, Republic of
Duration: 6 Apr 20209 Apr 2020


ConferenceIEEE Wireless Communications and Networking Conference
Abbreviated titleIEEE WCNC 2020
CountryKorea, Republic of
Internet address

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