Development of 26 GHz band quarter Gbps class Wireless IP Access System aiming to fit NGN

Since 2008, we have been developing the integrated SoC (System-On-Chip), which incorporates the ultra-high-speed multi-level QAM modem, multiple connection type MAC (Media Access Control) and also the Gigabit Ethernet interface, in a bid to adapt to the quasi-millimeter wave broadband wireless system. In 2009, we developed the SoC for the WT (remote side Wireless Terminal on P-MP (Point-to-Multi-Point) system) which functions on maximum 40 MHz radio clock, single-carrier 64QAM, and TDD-TDM/TDMA transmission. Then we were able to conduct the equipment level RF evaluations in the actual radio connection after implementing the SoC in the 26 GHz band prototype P-MP system which is called as “Advanced WIPAS (Wireless IP Access System)” [1][2][3]. This time, we have evaluated the performance of the prototype system. As a result, the adaptive sharing of the physical band 240 Mbps to up-link and down-link for each remote station has been succeeded and we have been able to confirm more than 180 Mbps of maximum effective throughput when one station of multi users is assigned the maximum resource to. At the same time, we have also been able to confirm that the function of QoS control and the broadcast transmission to the WTs worked effectively. Therefore we would like to report the results by this paper.