Τίτλος:
Joint power control and spectrum sensing for capacity maximisation in spectrum sharing systems
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We study the problem of joint power control and spectrum sensing for maximising the capacity at the secondary user while protecting the primary user's transmissions in spectrum sharing cognitive radio systems. Power control regulates the transmission power of the secondary user and spectrum sensing regulates the sensing time and the sensing threshold that care for the primary user's protection. This problem is a capacity maximisation problem that we formulate and solve using an iterative greedy algorithm due to its complex form. The solution of the proposed algorithm leads to the global optimal solution that represents the optimal triplet values of transmission power, sensing time and threshold. The obtained results show the potential capacity maximisation that is achieved by the proposed joint design as long as the primary user's protection is provided. Finally the convergence behaviour of the proposed algorithm is assessed in terms of the needed iterations for enhancing the capacity of spectrum sharing systems. © 2013 Copyright Taylor and Francis Group, LLC.
Συγγραφείς:
Foukalas, F.
Karetsos, G.T.
Περιοδικό:
AEά - International Journal of Electronics and Communications
Λέξεις-κλειδιά:
capacity maximisation; Complex forms; Global optimal solutions; Iterative greedy algorithm; Joint designs; Joint power control; Potential capacity; Primary Users; Secondary users; Spectrum sensing; Spectrum sharing; Spectrum sharing systems; Transmission power, Algorithms; Cognitive radio; Iterative methods; Radio systems, Power control
DOI:
10.1080/00207217.2012.710877
