Performance analysis and hardware verification of signal detection scheme using cyclic prefix in OFDM

In 5th generation mobile communication systems, various wireless devices will use an OFDM signal whose parameters are adapted to each device. Frequency sharing among such devices is an important study issue. For their smooth introduction, it is essential to develop a signal detection technology with low complexity and high sensitivity. We have studied a signal detection scheme using a cyclic prefix usually attached to an OFDM signal. However, the probability distribution of the detection performance, which gives false-alarm and non-detection probabilities in signal detection, has been considered only by Monte Carlo simulation. This paper presents the formulation of the detection performance, and its verification by hardware implementation. Experiments using the detector operating in the radio frequency band verified that the false-alarm and nondetection probabilities calculated by the analytical formula agree with those by the hardware experiments.