Preamble Sequence Design in Frequency offset Channel for mMTC Scenarios

To overcome the physical random access channel(PRACH) capacity shortfall in massive machine type communication(mMTC) scenarios, an improved generalized symmetric Zadoff-Chu(GSZC) sequence scheme is proposed, and its detection probability is also deduced and verified in this paper. Simulation results show that compared with GSZC sequences, the proposed ones can achieve a higher probability of preamble detection and lower detection complexity while maintaining set size and anti-frequency offset performance advantages over traditional Zadoff-Chu(ZC) sequences.