Abstract
In this paper, we propose to enhance the throughput of Cognitive Radio Networks (CRN) by optimizing packet length. The throughput in the secondary and primary networks are maximized by optimizing packet length. The derived packet length takes into consideration the interference from primary transmitter to secondary receiver. We also take into account the interference from secondary source to primary receiver. For each average Signal to Noise Ratio (SNR), we provide the expression of packet length that yields to maximum throughput. The proposed optimal packet length for CRN allows 1–5 dB gains in terms of throughput with respect to fixed packet length.