2-D optical-CDMA modulation in automotive time-of-flight LIDAR systems

Kwong, Wing C. and Lin, Wei-Yi and Yang, Guu-Chang and Glesk, Ivan (2020) 2-D optical-CDMA modulation in automotive time-of-flight LIDAR systems. In: 22nd International Conference on Transparent Optical Networks ICTON 2020, 2020-07-19 - 2020-07-23.

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Abstract

In this paper, the application of 2-D optical code-division multiple-access (OCDMA) modulation using wavelength-hopping time-spreading codes in long-range automotive time-of-flight (ToF) light detection and ranging (LIDAR) systems is proposed and demonstrated. The regulations and constraints that govern the design of the proposed system are presented. Using 2-D carrier-hopping prime codes, the modulation technique and associated hardware are implemented and validated with OptiSystemTM simulation. Interference-robustness studies show that the proposed 2-D OCDMA ToF LIDAR system is more flexible in the choice of system/code parameters and can support many more sensors and simultaneous ToF measurements than the 1-D counterpart. Keywords: Automotive, code division multiple access, LIDAR, time-of-flight.

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