Broad band wireless systems have been considered as a potential solution for the future quad play services. With the release of 7-GHz license free band, 60-GHz millimeter-wave wireless system has been widely investigated recently. In this work, a 60GHz Radio-over-Fiber (RoF) system with frequency sextupling is experimentally demonstrated. Two dual-parallel Mach-Zehnder modulators is used in this demonstration, one for modified single sideband (SSB) modulation with frequency doubling and one for frequency quadrupling. OFDM signal generation is applied to this system, and we demonstrate with data-rate 13.75-Gb/s OFDM-QPSK signal, and data-rate 20.625-Gb/s OFDM-8QAM signal. Additionally, we demonstrate that double sideband with carrier suppress (DSBCS) modulation scheme can also transmit vector signal by signal pre-coding.