Frame duration and detection frequency in opportunistic spectrum access systems

In order to maximize the transmission throughput and quality of secondary users (SU) in an opportunistic spectrum access (OSA) systems operating under practical constraints of continuous collisions between the secondary and primary users (PU), we have studied the frame duration behavior and SU´s detection frequency under difficult OSA interference and noise conditions. Having analyzed collisions from the SU point of view we first generate a mathematical modeling of the signal to interference and noise rate (SINR) for the SU then, an optimal frame duration is obtained by analyzing characteristics of the SINR in various OSA scenarios. For doing this we have defined the average detection frequency by analyzing the average fading duration of the SINR. This new approach provides a tradeoff between the collision and frequency efficiency as well as improving system´s overall performance.