OFDM interference detection using flexible subcarrier channel estimator

Multiband systems can flexibly create spectral holes to coexist with narrowband systems. Therefore, the multiband system with existing the narrowband system must be immediately detected to remove the interference on each system. We develop a channel estimator with a detection of narrowband interference system to implement multiband systems. The interfering system parameters, occupation of frequency band and angle-of-arrival, can detect before demodulation. The effective design and the detection error rate are evaluated via verification tests in anechoic chamber and computer simulations.