Utilization of Unused Frequency Bands

Rapid increase of mobile data traffic by smart phones necessitates more effective utilization of frequency resources, which can be attained by the technology of "Wideband Non-Contiguous OFDM (WNC-OFDM)". WNC-OFDM thoroughly gathers unused resources dispersed in frequency domain by placing radio signals of OFDM onto the fragmented frequency bands that are not used by other wireless systems at certain places and times.

This research was performed under research contract of “Research and Development on Wideband Non-Contiguous OFDM”, for the Ministry of Internal Affairs and Communications, Japan.