Developments of the SoC for high-multi-level QAM 1 Gbps class wireless system and its evaluation with RF hardware of 38 GHz band FWA

Abstract

Since 2008, we have been developing the integrated SoC, which incorporates from the ultra high speed multi-level QAM modem to the gigabit Ethernet interface, in a bid to adapt to the millimeter wave broadband wireless system. In 2009, we developed the SoC that functions on its maximum modulation clock 200 MHz, single-carrier 16QAM, and TDD, and managed to conduct field evaluation tests as a state of actual operation of 38 GHz band P-P FWA system. This time, we have increased the resolution of ADC/DAC incorporated in the SoC, and made design improvements to suppress the internal clock jitter, and finally managed to develop a prototype SoC for the wireless system, which enables 64QAM operations (on architecture of the modem, maximum multi-level is 256QAM) and also actualized an effective throughput of 1 Gbps.