Evaluation of influence by simultaneous reception of other radio systems in wideband NC-OFDM

Abstract

We are studying Wideband Non-Contiguous OFDM (WNC-OFDM) to utilize unused frequency bands. WNC-OFDM achieves high-speed communication by gathering OFDM subcarriers on the unused frequency resources that are located dispersively and narrowly in extremely wide bands. In this case, since a WNC-OFDM receiver receives not only the desired WNC-OFDM signals but also undesired signals of other systems simultaneously, WNC-OFDM signals are affected by the interference from the signals of other radio systems. It is important to comprehend the influences from other radio systems and tolerance for them to design and tune WNC-OFDM transceivers. In this paper, we evaluate the influences in a WNC-OFDM receiver by developed experimental equipment and computer simulations.