a system that incorporates teachings of the subject disclosure may include , for example , a method for identifying a spectral region in a radio frequency spectrum for initiating a communication session having a transmission link and a reception link , determining a correlation factor from signals measured in the spectral region , detecting according to the correlation factor a foreign communication signal in the spectral region , generating coefficient data to prevent interference with the foreign communication signal while transmitting in the transmission link , filtering a first signal for transmission in the transmission link according to the coefficient data to generate a filtered signal , and causing a transmission of the filtered signal which prevents interference with the foreign communication signal while transmitting in the transmission link . other embodiments are disclosed .