Open AccessEnergy‐efficient network cooperation joint resource configuration in multi‐RAT heterogeneous cognitive radio networks
Author(s) -
Feng Li,
Kuang Yujun,
Fu Xinchuang,
Dai Zeyang
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.1315
Subject(s) - cognitive radio , computer science , quality of service , relay , efficient energy use , computer network , resource allocation , transmitter power output , transmission (telecommunications) , spectral efficiency , energy consumption , mathematical optimization , wireless , power (physics) , transmitter , telecommunications , channel (broadcasting) , engineering , electrical engineering , mathematics , physics , quantum mechanics
A novel energy efficiency (EE)‐oriented cognitive spectrum sharing scheme in heterogeneous cognitive radio networks, called energy‐efficient cognitive cooperation (ECC) is proposed, in which the primary system release a part of its radio spectrum to the secondary system in exchange for secondary user (SU) served as a relay to assist the transmission of the primary user (PU) traffic. On the basis of ECC scheme, an EE maximisation non‐convex problem for SUs is formulated under the circuit power consumption and the QoS requirements as well as power constraints. By virtue of parametric Dinkelbach's algorithm and golden section search method, an efficient resource allocation algorithm is developed. Simulation results show that our proposals attain significantly higher EE compared with the non‐cooperation transmission without sacrificing the performance of PU's QoS, and thus, a ‘win‐win’ situation is achieved.