Analysis of Passive Intermodulation Effect on OFDM Frame Synchronization

Passive intermodulation can lead to a decrease in the performance of frame synchronization for the orthogonal-frequency-division multiplexing (OFDM) systems. In this paper, the Schmidl&Cox algorithm of frame synchronization is simplified by difference calculation to avoid overly complicated analysis. The statistical properties of time metric function in the presence of passive intermodulation interference are obtained by Gaussian distribution fitting. The closed form of false and missing detection probabilities are derived to evaluate the frame synchronization performance. Finally, simulations are conducted to demonstrate the validity of the analysis results.

[1]  Ying Liu,et al.  Evaluation of Passive Intermodulation Using Full-Wave Frequency-Domain Method With Nonlinear Circuit Model , 2016, IEEE Transactions on Vehicular Technology.

[2]  Michael B. Steer,et al.  Passive Intermodulation of Analog and Digital Signals on Transmission Lines With Distributed Nonlinearities: Modelling and Characterization , 2016, IEEE Transactions on Microwave Theory and Techniques.

[3]  Pei Zhao,et al.  Analysis of passive intermodulation generated by broadband signals , 2016 .

[4]  Hans L. Hartnagel,et al.  Bit Error Probability in the Presence of Passive Intermodulation , 2012, IEEE Communications Letters.

[5]  Mohamed Marey,et al.  Analysis of the Narrowband Interference Effect on OFDM Timing Synchronization , 2007, IEEE Transactions on Signal Processing.

[6]  Andrea Goldsmith,et al.  Wireless Communications , 2005, 2021 15th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS).

[7]  Jacques Sombrin,et al.  Relaxation of the multicarrier passive intermodulation specifications of antennas , 2014, The 8th European Conference on Antennas and Propagation (EuCAP 2014).

[8]  P. L. Lui,et al.  Passive intermodulation interference in communication systems , 1990 .

[9]  D. Pollard,et al.  Passive intermodulation product generation in high power communications satellites , 1986 .

[10]  Donald C. Cox,et al.  Robust frequency and timing synchronization for OFDM , 1997, IEEE Trans. Commun..