On Correlation-Based Channel Sensing with IQ Imbalance

This paper addresses the problem of the detection of the presence of a pre-classified (i.e., pulse shape is known) signals with IQ imbalance considering free-space path-loss. We study the effect of IQ distortion on the probability of detection and false alarm and find the degradation in the probability of detection compared with the case of ideal IQ branches. We propose closed form expressions for the probability of detection and false alarm for signals suffering from IQ imbalances.

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