Effective throughput 1Gbps wireless system by single-carrier 64QAM for millimeter-wave applications

Abstract

In preparation for achieving the millimeter-wave ultra-broadband wireless system aimed at seamless connection with the optical communication network, in 2009 we have developed the key devices such as baseband signal processing SoC (System-On-Chip) with built-in ultrahigh-speed multi-level QAM (Quadrature amplitude modulation) modem (modulator and demodulator) and gigabit Ethernet MAC (Media Access Control). We have also prototyped the micro-mini and ultra-broadband 38 GHz band point-to-point wireless system and achieved the performance of effective throughput 600Mbps on 16QAM operation, furthermore, we evaluated the performance of this system by actual operation in the field. This time, we have upgraded the resolution of ADC/DAC (Analog to Digital Converter / Digital to Analog Converter) built in this SoC and improved the performance of RF characteristics, and achieved the development prototype System with this new SoC, which enables 64QAM operation and the effective throughput of 1Gbps.