Implementation of Non-Orthogonal Multiple Access on DVB-T Using Software-Defined Radio

In this paper, a downlink power-domain nonorthogonal multiple access (NOMA) is implemented and applied to the DVB-T standard using software-defined radio (SDR) technology so that normal DVB-T users can receive the main DVB-T video stream whereas additional DVB-T streams and/or data streams can also be simultaneously sent on a shared bandwidth, thereby enhancing spectral usage efficiency. From the experiment results, four DVB-T video streams can be successfully sent by the developed system.