Prototype of 3-Gb/s 60-GHz millimeter-wave-based wireless file-transfer system

We report the development of the prototype of a high-speed wireless file-transfer system using a 60-GHz band. The prototype achieved an effective user-data rate over 3 Gb/s using a quadrature-phase-shift keying modulation, including overheads of a physical layer and a retransmission control between two memory devices, by using a new 40-nm CMOS baseband LSI and automatic direct memory-access control.