Abstract: Embodiments relate to a dynamic spectrum access (DSA) system including a DSA transmitter configured to generate a complex signal for a secondary communication system, the complex signal being within a communication band A that is equal to or falls within a communication band B of a primary communication system. The complex signal includes a first signal and a second signal that is a repeat of the first signal. The power of the complex signal received at the secondary communication receiver is greater than the noise floor of the secondary communication system, but is equal to or less than the interference power from the primary communication. The DSA system includes a DSA receiver including a plurality of DSA antennas and a DSA signal processing module, the DSA signal processing module configured to perform canonical correlation analysis (CCA) on the complex signal.