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On the Capacity of Block Fading Optical Wireless Channels

Abstract : This paper investigates the capacity of block fading optical intensity channels with more transmit than receive antennas under different assumptions on the transmitter's channel state information (CSI). Lower and upper bounds on the capacities are derived using the entropy power inequality (EPI) and a dual expression for capacity. Our lower bounds for perfect and partial CSI utilize a transmit-antenna cooperation strategy based on minimum-energy signaling, which we proposed recently. For perfect CSI, this lower bound matches the upper bound asymptotically in the high signal-to-noise ratio (SNR) regime. For imperfect CSI, our lower bound is close to its perfect-CSI counterpart.
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Contributor : Ligong Wang Connect in order to contact the contributor
Submitted on : Tuesday, August 31, 2021 - 9:49:31 AM
Last modification on : Wednesday, November 3, 2021 - 8:15:55 AM
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Longguang Li, Stefan M Moser, Ligong Wang, Michèle Wigger. On the Capacity of Block Fading Optical Wireless Channels. 2019 IEEE Global Communications Conference (GLOBECOM 2019), Dec 2019, Waikoloa, HI, United States. ⟨10.1109/GLOBECOM38437.2019.9013614⟩. ⟨hal-03009327⟩



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