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This paper presents a study of the candidate waveforms for 5G when they aresubject to timing and carrier frequency offset. These waveforms are: orthogonalfrequency division multiplexing (OFDM), generalized frequency divisionmultiplexing (GFDM), universal filtered multicarrier (UFMC), circular filterbank multicarrier (C-FBMC), and linear filter bank multicarrier (FBMC). We areparticularly interested in multiple access interference (MAI) when a number ofusers transmit their signals to a base station in an asynchronous or aquasi-synchronous manner. We identify the source of MAI in these waveforms andpresent some numerical analysis that confirm our findings. The goal of thisstudy is to answer the following question, "Which one of the 5G candidatewaveforms has more relaxed synchronization requirements?".

Impact of Timing and Frequency Offsets on Multicarrier Waveform Candidates for 5G