41 / 2021-06-23 10:46:45

Signal and Interference Analysis of UFMC System with Timing Offset

Universal Filtered Multi-Carrier (UFMC) modulation is considered to be a 6G candidate waveform that can replace Orthogonal Frequency Division Multiplexing (OFDM).  However, when the arrival time of the signal received by the UFMC receiver is inconsistent with the expected arrival time, the Timing Offset (TO) will be generated, which will introduce Inter Symbol Interference (ISI) and destroy the orthogonality of subcarriers and reduce the communication quality.  This paper studies the signal and interference analysis of the UFMC system with TO, derives its mathematical expression, numerically calculates and compares the Signal to Interference Ratio (SIR) under different waveform filter lengths and different timing offsets. Simulation comparison of Symbol Error Rate (SER) in different situations.  The results show that the timing offset value is positively correlated with the signal interference intensity, and the filter length is inversely correlated with the system SER value.