Wireless Delivery of over 100 Gb/s mm-Wave Signal in the W-band

Abstract

We summarize several different approaches for the realization of large capacity (>100 Gb/s) fiber wireless integration system, including optical polarization-division multiplexing (PDM) combined with multiple-input multiple-output (MIMO) reception, advanced multi-level modulation, optical multi-carrier modulation, electrical multi-carrier modulation, antenna polarization multiplexing, and multi-band multiplexing. These approaches can effectively reduce the signal baud rate as well as the required bandwidth for optical and electrical devices. We also investigate problems, such as wireless multi-path effects due to different wireless transmission distances, existing in large-capacity fiber wireless integration systems. We demonstrate that these problems can be effectively solved based on advanced digital signal processing (DSP) algorithms including classic constant modulus algorithm (CMA). Moreover, based on the combination of these approaches as well as advanced DSP algorithms, we have successfully demonstrated a 400G fiber wireless integration system, which establishes a new record for delivered wireless capacity and ushers in a new era of ultra-high bit rate (>400 Gb/s) optical wireless integration and communications at mm-wave frequencies.