Most current wireless systems, including the first release of the fifth generation (5G) standards, are based on OFDMA, because it is very effective for broadband transmission on multipath wireless channels. However it also has significant disadvantages: it gives rise to relatively large out-of-band transmissions, and it requires the users to be synchronised. This may be especially difficult for massive machine-type communication (mMTC) in 5G, in which large numbers of small, low power nodes may transmit small packets of data, and cannot afford the overheads required to synchronise with the network. There are alternative waveforms which do not require synchronisation, but they may result in intercarrier interference (ICI). The project will investigate some of these alternative waveforms using interference cancellation, along with LDPC or turbocodes, to remove the ICI, focussing in particular on their compatibility with the 5G “New Radio” standard.