Title :
Optimal Time Allocation for Multi-hop Relay Cognitive Radio Network
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
In this paper, the time allocation for multihop relay cognitive network is studied. For a N-hop relay cognitive radio network, the achievable ergodic capacity with a given sensing time is determined by the transmission time of each relay. As a result, the existence of an optimal time allocation scheme for the N-hop relay cognitive radio network is proved. After this general analysis, a 3-hop relay cognitive radio network is taken as an example to illustrate the general results. Through the theoretical and simulation results, an optimal time allocation scheme can be obtained.
Keywords :
cognitive radio; radio spectrum management; relay networks (telecommunication); signal detection; 3-hop relay cognitive radio network; N-hop relay cognitive radio network; achievable ergodic capacity; multihop relay cognitive radio network; optimal time allocation scheme; relay transmission time; spectrum sensing time; Cognitive radio; Radio transmitters; Relay networks (telecommunications); Resource management; Sensors; cognitive radio; multihop relay; spectrum sensing; time allocation;
Conference_Titel :
Wireless Communication and Sensor Network (WCSN), 2014 International Conference on
Print_ISBN :
978-1-4799-7090-2
DOI :
10.1109/WCSN.2014.8
