Integrated High Accuracy Laser Ranging and Communication Scheme Using Large Dynamic Range and Low-complexity DSP Algorithm

A novel integrated laser ranging and communication (ILRC) scheme is proposed, offering high ranging accuracy, a large dynamic range and low complexity. By redesigning the receiver-side DSP scheme and utilizing the output parameters of a low-complexity clock recovery and frame synchronization algorithm in the Rx-DSP procedure, the proposed schemes achieves millimeter-level ranging in the conventional optical communication system without introducing any additional hardware components. Simulation and experimental results validate the effectiveness of the proposed ILRC scheme that exhibits a dynamic range exceeding 20 dB. We experimentally demonstrate an ILRC system of a communication rate of 20 Gbps and high ranging accuracy of 1.
$95\sim 1.28$
mm at the low received power of −48
$\sim$
−35 dBm.