Design and Performance of Resonant Beam Communications – Part I: Quasi-Static Scenario
CoRR(2024)
Abstract
This two-part paper studies a point-to-point resonant beam communication
(RBCom) system, where two separately deployed retroreflectors are adopted to
generate the resonant beam between the transmitter and the receiver, and
analyzes the transmission rate of the considered system under both the
quasi-static and mobile scenarios. Part I of this paper focuses on the
quasi-static scenario where the locations of the transmitter and the receiver
are relatively fixed. Specifically, we propose a new information-bearing scheme
which adopts a synchronization-based amplitude modulation method to mitigate
the echo interference caused by the reflected resonant beam. With this scheme,
we show that the quasi-static RBCom channel is equivalent to a Markov channel
and can be further simplified as an amplitude-constrained additive white
Gaussian noise channel. Moreover, we develop an algorithm that jointly employs
the bisection and exhaustive search to maximize its capacity upper and lower
bounds. Finally, numerical results validate our analysis. Part II of this paper
discusses the performance of the RBCom system under the mobile scenario.
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