2021/11/22 by Ru‐Han Chen, Chen, Ru-Han, Longguang Li +7
Engineering · #FOS: Computer and information sciences #Information Theory (cs.IT) #Optical Network Technologies #Semiconductor Lasers and Optical Devices #graph theory and CDMA systems
paper · pdf · doi:10.48550/arxiv.2111.11637
openalex publication_date 2021/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper investigates the capacity of general multiple-input single-output\n(MISO) optical intensity channels (OICs) under per-antenna peak- and\naverage-intensity constraints. We first consider the MISO equal-cost\nconstrained OIC (EC-OIC), where, apart from the peak-intensity constraint,\naverage intensities of inputs are equal to arbitrarily preassigned constants.\nThe second model of our interest is the MISO bounded-cost constrained OIC\n(BC-OIC), where, as compared with the EC-OIC, average intensities of inputs are\nno larger than arbitrarily preassigned constants. By leveraging tools from\nquantile functions, stop-loss transform and convex ordering of nonnegative\nrandom variables, we prove two decomposition theorems for bounded and\nnonnegative random variables, based on which we equivalently transform both the\nEC-OIC and the BC-OIC into respective single-input single-output channels under\na peak-intensity and several stop-loss mean constraints. Capacity lower and\nupper bounds for both channels are established, based on which the asymptotic\ncapacity at high and low signal-to-noise-ratio are determined.\n