I. Introduction
The use of radio over fiber (RoF) technology in a fiber distributed antenna system (F-DAS) is a well-known technique to be employed as a cost-effective solution for radio coverage in areas with a high traffic demand, such as, for example, stadiums, airports, and conference centers [1], [2]. An RoF link is used as an analog repeater between the so-called base-station hotels [3], where the radio signals are electrically generated, and the remote antenna units.