COMPARATIVE COMPUTER-AIDED DESIGN OF MILLIMETER-WAVE-TO-OPTICAL CONVERTERS FOR FIFTH-GENERATION COMMUNICATION NETWORK

摘要

Using well-known off-the-shelf optoelectronic software, we compare in detail three most prospective types of external optical modulators as millimeter-wave-to-optical converters in fiber-optics link of fiber-wireless fronthaul network for fifth-generation communication network based on Radio-over-Fiber technology. In all cases, the same 1.25 Gbit/s 16-position quadrature amplitude modulated signal at the radio-frequency carrier in intermediate-band (15 GHz) or millimeter-wave band (40 GHz) propagates over fiber-optics link under study. In the result, it is shown that the use of a signal transmission scheme at the radio frequency of intermediate band (between "Low Range" and "High Range" of 5G network) allows a significant increase in the length for the fiber-optics section of a fiber-wireless fronthaul network. However, this leads to a complication of the base station scheme, since additional up/down-conversion of the radio-frequency carrier is required.