Design and Performance of Resonant Beam Communications – Part II: Mobile Scenario
arxiv(2024)
摘要
This two-part paper focuses on the system design and performance analysis for
a point-to-point resonant beam communication (RBCom) system under both the
quasi-static and mobile scenarios. Part I of this paper proposes a
synchronization-based information transmission scheme and derives the capacity
upper and lower bounds for the quasi-static channel case. In Part II, we
address the mobile scenario, where the receiver is in relative motion to the
transmitter, and derive a mobile RBCom channel model that jointly considers the
Doppler effect, channel variation, and echo interference. With the obtained
channel model, we prove that the channel gain of the mobile RBCom decreases as
the number of transmitted frames increases, and thus show that the considered
mobile RBCom terminates after the transmitter sends a certain number of frames
without frequency compensation. By deriving an upper bound on the number of
successfully transmitted frames, we formulate the throughput maximization
problem for the considered mobile RBCom system, and solve it via a sequential
parametric convex approximation (SPCA) method. Finally, simulation results
validate the analysis of our proposed method in some typical scenarios.
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