Coexistence of primary users and secondary users under interference temperature and SINR limit

Spectrum sharing offers the opportunity for promising efficiency gains,and it will be a valuable tool in the era of future radios.To address this issue,we develop a multi-user cognitive radio sharing network based on opportunistic spectrum access and propose a new spectrum sharing strategy.The objective of our interest is to obtain the number of secondary users who can coexist peacefully with primary users to improve the utility of licensed spectrum,at the same time maximize the total goodput under the interference temperature and SINR constraints.Through analysis and simulation,the new strategy of spectrum sharing does improve the goodput performance as well as guarantee the Quality of Service (QoS) of primary and secondary users.