Multiband sensing-time-adaptive joint detection cognitive radios framework for Gaussian channels

This paper analyzes the multiband sensing-time-adaptive joint detection cognitive radios framework. The framework optimizes secondary throughput while minimizing the interference to a wideband multiband primary communications system. The ranges are determined under which the problem can be categorized as a complex optimization one under real Gaussian channel conditions. Simulated results compare the performance of MSJD framework with the earlier proposed multiband joint detection (MJD) framework for some typical primary signals received in real Gaussian and Circularly Symmetric Complex Gaussian channels.