Performance Evaluation for OFDM Link Based on LabVIEW and USRP

OFDM has been the core technology of the fourth generation mobile communication due to its strong ability to resist channel fading and high spectral efficiency. However, phase noise and carrier frequency offset often leads to a loss of orthogonality among the sub-carriers, which will affect the performance of the system. The traditional theory simulation lacks the interference information of practical channel. In this paper, we combine the simulation theory and physical research platform to evaluate OFDM link performance using LabVIEW and USRP. The method is of benefit to analysis of the impact of the actual channel environment on OFDM signal transmission.