18 Mbit/s Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band

摘要

A wireless communications system with a transmission speed of 18 Mbit/s is presented using the 2.4 GHz ISM band. This system employs the "Carrier Frequency Offset-Spread Spectrum (CFO-SS)" scheme and the "Dual-Polarization Staggered Transmission (DPST)" scheme. The 18 Mbit/s CFO-SS system (named "CFO-SS 18") was developed and its performance evaluated in fields. In this paper, the detailed operating principle of CFO-SS and DPST schemes, together with the specifications and structures of CFO-SS 18, are presented. Results of indoor and field tests obtained by using CFO-SS 18 are also presented.